discussion Other [Koikatsu] The Depressed Dude Isekai [v0.35] [Rebel 357]

[Rebel 357]

Allow others to update?

1. yes

Developer Name

Rebel 357

Developer Links

Baraag

Version

0.35

Latest Update

Jun 1, 2026

Release Date

May 12, 2026

Language

English

OS

1. Windows
2. Linux

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Overview:
A young depressed man finds himself mysteriously transported to another world. A world not of humans, but furry humanoids known as Fur People. To support himself in a new world, the young man heads into the great Abandoned Dungeon to make money in order to support himself in the new world.​

License: The Depressed Dude Isekai by Rebel 357 is marked CC0 1.0 Universal. To view a copy of this mark, visit

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This game is not supposed to be very easy or even easy! You are allowed to walk around different areas of the dungeon so that you can explore at your own risk. There is no hand holding here. If you're looking for an easy game for a very quick and lazy fap, then you'll be disappointed. It's not Dark Souls either, so the game won't be difficult.

Spoiler: Genre:

RPG - Turn Based
Theme: Isekai, Dungeon Exploration, Dungeon Crawler
Tags: Male MC, Furry Females, Hetero Sex, Fantasy, Catgirls, Mouse girl, cub/furry loli, flat chest, small breasts, furry female love interests only
Soundtrack: Pop-Punk Emo fusion

Spoiler: Installation

Extract and run

Linux:
1. Extract
2. Run file "Game"

Spoiler: Change-Log

Spoiler: Version 0.35

Version 0.35
• Updated RPG Paper Maker engine version to 3.1.16
• Lowered Random Battle Encounter Rate for Maps (DW) to 240. Exception are the safe spaces with lanterns.
• Sex Options in the gallery replay now use new RPM feature to stop videos. No more needing to hold the Cancel button.
• Sex Options in the gallery replay have been altered on layer position and removal of some pauses/wait.
• Changed a line of dialogue for Millie (Girl no3) under “Talk”
• Fixed incorrect information on book given for Phoebe (Girl no1) on Gift VI
• Fixed the missing names of items that are gifted to Selene (Girl no2)
• Changed the layer position and removed some pauses/waits for Phoebe, Selene, and Millie for Sex Options
• Fixed a grammar error and added a slight change to Phoebe “Talk – The Gloomy Human”
• Fixed bug for “Talk” with Phoebe and Selene
• Fixed spelling error for Selene “Talk – About Yourself”
• Added a line of dialogue for Selene “Talk – About Yourself”
• Changed a line of dialogue for Selene “Talk – Clothing” and “Talk – The Sacred iPod”
• Change to the dialogue for Selene “Talk – The Human Teacher” and “Talk – Crystals”
• Increased cost for Medium sized Health Drinks, Herbal Drinks and Aged Whiskey up to 9 coins
• Changed some max value stats for the protagonist
• Changed level requirement for learning some skills
• Changed level requirement when enemy Blue Slime learns skill “Water”
• Adjusted some Exp gained by some enemies when they are defeated
• Adjusted enemy encounter type for DF-1 and it’s rate to a lower encounter rate
• Lowered Random Battle Encounter Rates for all DF/North East Dungeon Branch maps to 220 steps, with variance kept the same for the maps.

Spoiler: Version 0.30 (unreleased)

Version 0.30 *(Unreleased)
• Updated BGM List on Campground base
• Corrected map branch name for Dungeon_Map_5B.jpg
• Updated tutorial information on Broken and Weaken status effects
• Changed the way player moves from the Dev Maps to other Dev Maps
• Added more sprites to several maps
• Added examination points to several Be- Maps
• Increased width of Map Be-16 by 1
• Added full numbered map of Beginner Branch Dungeon in map Be-17
• Added examination point for corpse in DW-16 and DW-17
• Edited Map Visuals for DW-15 and DW-16
• Increased Exp gained from enemies
• Decreased Random Battle Encounter rate for Map DW-15
• Changed the layout of map DW-2 and added more sprites
• Moved a coinbag location in map DW-2
• Added extra coinbag for DW-3 and DW-6
• Added 10 new BGMs
• Slight change to some walls and floor tiles of Map DW-4, DW-8 and DW-11
• Moved chest location of map DW-4
• Added a few sprite to map DW-4
• Changed some of the floor tiles and sprites for map DW-6, DW-7 and DW-10
• Added a few examination points to map DW-10
• Added new chest trap to map DW-3
• Added Exp Mushroom in map DW-3
• Added new examination points in map DF-36
• Fixed Random Play values for Keypress
• Adjusted Main Dungeon Room so that you can’t easily waste an escape map item
• Changed map location when using Escape Map item
• Changed emote to a heart emote for Girl no3 when donation is made in map Lv2-4
• Fixed teleport bug when going from map Lv2-3 to Lv-4.
• Added new battle map [Map - Battle - DW – 3]
• Added a few more Exp mushrooms on a few maps
• Added several non-respawning coin bags to maps in Be/North West Dungeon Maps and North-East Dungeon (Lv2) Maps
• Slight edit to Map Be-10
• Changed effect for cluster of mushrooms found on Map DW-15 from healing character to permanently increasing Defense and Magic Defense by 1 point
• Added 1 extra Mushroom cluster on map DW-15
• Added respawnable coin bag for map Lv2-2
• Added full numbered maps for NE dungeon branch, East Dungeon branch, West Dungeon branch and North Dungeon branch. Although currently unused in game at the moment.

Spoiler: Version 0.25 (Unreleased)

Version 0.25 *(Unreleased)
• The tiles for moving to the dungeon from camp now require character to be facing north instead of just touching it in any direction.
• Changed Random Battle Encounter rate for Maps Be to a lower rate, with exception of Lantern locations and Map Be-17
• Changed dialogue for back row of empty chests in Map Be-17
• Moved Spot for Girl 2 (Selene) and Girl 1 (Phoebe) on Campground Base
• Changed dialogue for examining small tent 1
• Added examination points on Large Tent (Recovery Tent)
• Added additional dialogue for Selene (Girl no2) on “Talk” when Affection is >=2.
• Added additional dialogue for Phoebe (Girl no1) on “Talk” when Affection is >=2.
• Changed Random Battle Encounter to a lower rate for: Lv2-1, DW-1, DW-2
• Added examination points in DE-2
• Added a one time Red Slime enemy to map DE-2 that will chase and attack the player
• Added a one time Green Slime enemy to map DW-1 that will chase and attack the player
• Added a Maps to Lantern Locations
• Shortened character speed jump in “Dungeon Intro” down to 0.4 seconds instead of 0.6 seconds.
• Added an interaction on the camping ground base where the main character will monologue after the dungeon intro scene.
• Changes to traversing through some dungeon doors in the Beginner Dungeon Maps, North-East Dungeon Maps (Lv2 Dungeon Maps), East Dungeon Maps (DE), West Dungeon Maps (DW), and North Dungeon Maps (DF/Final Dungeon Maps)
• Slight change of dialogue for “Intro to Girl 2”
• Removed a bit of wall for Be-16
• Moved Gates 1,2 and 3 for Be-16
• Changed viewing of Credits in Gallery Map
• Added CG only option for Girl 3 Special 1
• Removed X-Coin from database and system for game project
• Fixed some dialogue spelling errors for Girl 1
• Slight change of dialogue for Girl 1 on Question – The Three Wise Humans
• Slight change of dialogue for Intro to Girl 1
• Fixed Encounter with Rat on Be-13
• Added new shop item “Smoker’s Herb”
• Raised Exp earned from some monsters
• Changed the color of a few status effects

Spoiler: Version 0.20 (Unreleased)

Version 0.20 *(Unreleased)
• Fixed Coin Bag respawn for one of the maps
• Updated Credits image
• Changed Random Battle Frequency for Map DE – 1, 2, 3, 5, 6, 7, 9, and 10. Up to 180, while keeping variance percentage from before
• Changed Random Battle Frequency for Map DW – 3, 4, 5, 9, 11, and 14. Up to 180 while keeping the same variance percentage from before
• Changed Random Battle Frequency for Map DF – 1, 2, 3, 4, 6, 7, 8, 9, 10, 12, 13, 14, 15, 17, 18, 19, 20, 23, 24, 25, 26, 27, 28, 30, 31, 32, and 33
• Added 5 more spike traps to Map DF-6
• Changes to the spike traps in Map DF-12, DF-34
• Added new sprites to Map DF – 6, 7, 8, 12, 22, 23, 28, 29, 30, 32
• Added new examination points in Map DF- 12, 22, 29
• Added another coin bag that respawns in Map DF-12
• Fixed Spike Traps for Map DF-13, 15, 34, 35
• Fixed Switch Trap for DF-34
• Added new traps to Maps DF- 13, 15, 16, 17, 18, 34
• Updated RPG Paper Maker version for game project (3.1.15)
• Added SFX and line of dialogue for defeat of Mimic in DF-7
• Added examination point for bones in DF-7, DF-28
• Corrected text for Item obtained in chest 64 in DF-28
• Added False Mimic to DF-28 and DF-32
• Added Interactive point for jail bars in DF-28
• Corrected text for bones in DF-30
• Added transition effect for entering DF-30
• Added effect for Mid-Boss in DF-30
• Increased Exp gained by killing False Mimic enemy
• Fixed grammar for text on Bones in map DF-30
• Added spike traps to DF-8, added additional coin bag and moved 2 of the other coin bags
• Cosmetic change to Map DW-16, removed wall and added water tiles
• Added Maps 1,2, 3, 4, 5, and 6 to Dungeon for viewing
• Fixed Right Hand use for Swords
• Fixed Left Hand use for Knives
• Updated Tutorial info on Tutorial Map
• Corrected the requirement for Special Sex 1 for Girl 3 (Millie)

Spoiler: Version 0.15 (Unreleased)

NA

May 12, 2026:
0.000 Prototype release

Spoiler: Sexual Content

• Pregnancy Sex is optional
• All sexual content is optional, you can beat the game without having to engage in any sexual relationships

Spoiler: Dev Notes

EST: March 2026
Game Engine: RPG Paper Maker (RPM)
Code for Dev Map is 222

DOWNLOAD
Linux:

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Windows:

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Prototype:
Linux:
Windows:

Assets:
Documents:
Documents (Prototype):
Character Cards (KKS):
Full KKS Assets Pack:
Project Folder (Proto):

Screenshots:

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​

 

[Rebel 357]

Before one see's prototype and skips out because they think there's no content. Well, I'll have you know that for a prototype, there actually is an ending for it. Although, I'm not sure if I'll make an ending for each girl. The three love interests all have sexual content too.

I know without seeing any reviews or comments is that there's going to need to be some balance adjustments for the enemies. I don't know where exactly right now but I know it's going to be needed. The game builds should have documents answer some questions. For those that have questions I should be able to answer them here or at AC. There will be more exploration points in the game in another update. The encounter rate, might be too high for some areas, so let me know which ones where it should be adjusted. As for difficulty, this game is not supposed to be a walk in the park. I'll try to get around to adding more details for a game guide and improve the tutorial for the game. I didn't want a forced tutorial screen for the game so that's why it's on the player to travel to it on their own.

I had to rush some stuff for this prototype because I'm going on a trip soon. I'll have to look into the game once I get back from it.

Due to the game engine, there will be some bugs and features that are not present. I must remind those that the engine needs some slack cut for it and needs as much support as it can get. The game engine is the work of one young mom. Normally I wouldn't support a non-FOSS game engine, this one however, I like it enough to do so. This game project will also serve as a learning example for those who end up wanting to create a game with RPG Paper Maker.

Since some people can't read, you can hold the cancel button (X) to end the animation loops for sex.

In the meantime there will be access to the dev maps if one gets stuck. There's one room for testing out monster battles, one for testing traps, and another for items, weapons, armor and Exp.

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[AceyourGod]

Ok so writing this as of 6 minutes played and I do have some things. First, aspect ratio, I use a wide screen and can't adjust the game in any way so I'm missing a good portion at the bottom and can't see how much money I have(I know its none because I can't buy anything and can't kill anything with 1 damage). Second, the music. There is NO reason it should be that loud and I can't turn it off. I don't hear any other sounds from the game at all if there are any, so I just muted it. Last, yes the enemies need to be balanced, because the only thing I encountered with less than 20 HP was the sheep and it hit me twice then put me to sleep the whole battle and I had to escape with 2 HP when I finally woke up, which I wasn't sure I was going to do. After I tried again and died, it just kept happening, I can only do 1 damage, then half my HP gone like that, and the sheep has 7 fucking HP, and I can't even hit it more than 3 times before I'm dead. I'll wait for the fix.

 

[Rebel 357]

Ok so writing this as of 6 minutes played and I do have some things. First, aspect ratio, I use a wide screen and can't adjust the game in any way so I'm missing a good portion at the bottom and can't see how much money I have(I know its none because I can't buy anything and can't kill anything with 1 damage). Second, the music. There is NO reason it should be that loud and I can't turn it off. I don't hear any other sounds from the game at all if there are any, so I just muted it. Last, yes the enemies need to be balanced, because the only thing I encountered with less than 20 HP was the sheep and it hit me twice then put me to sleep the whole battle and I had to escape with 2 HP when I finally woke up, which I wasn't sure I was going to do. After I tried again and died, it just kept happening, I can only do 1 damage, then half my HP gone like that, and the sheep has 7 fucking HP, and I can't even hit it more than 3 times before I'm dead. I'll wait for the fix.

1. You can try full screen mode to see if that helps. [ Shift + Enter] or [F4]
2. I've killed several level 1 dungeon sheep without being in critical condition at level 1. You kill 2 and you already level up to level 2. You can either run to room Be-4 where you can equip Rusty Sword and Rusty Knife. Another option is using Pussy's Earring and Cowardly Dagger which can be found by the dungeon entrance. You can go about it in several ways. In my documents I do say that this game is not going to be a walk in the park, but it's not going to be Dark Souls difficult either.
3. The game engine lacks plenty of features that should be a core feature. One of them is to adjust Volume for Master, SFX, BGM, SE. I can't do much about volume control until they implement it for the game engine. As for the music, You can press X to stop the music, which can be done when you are able to freely move your character.

I've had to rush this prototype out before I go out on my trip. I'll be adjusting the encounter rate for sure to be much lower for one. I don't need reports on lack of examination points since, I'm aware of that and will get to that when I get back from my trip.

This game will not hold your hand and force a tutorial on the player. If you need some info, there is a tutorial map you can travel on your own to. As for game guides, I will be adding a more detailed guide for others to use.

So far this is what has been put together.

 

[Darkrift411]

My brain cant get past something in the desc that just makes my eyes start to twitch and swirl around.
"A world not of humans, but furry humanoids known as Fur People."

They know themselves as fur people? This is odd. If there are no "not fur people" (humans), they should feel this is normal, and just know themselves as "people". You would be the odd one. The "furless person". Or is it saying the MC dubbed them the "fur people"? If so, I wouldnt call this known.

Are you known as WTFDev because I am confused so I decide to call you that? I feel like "known as" means either it was mass accepted by a lot of people (not a single MC), or was built up over time (MC lived there by himself for 50 years calling them the "fur people", he could then say "they are known as the fur people").

And yes, this is rather stupid and meaningless, but its the type of shit that catches me when reading something like a game desc and makes me think "is the rest of the game this nonsensical?" And even when I decided this was stupid and I should move on, the next part was "to support himself in this new world <he did stuff> to support himself in this new world." So now 80% of the desc feels badly written and rushed. Without thought. So even if the games demo photos showed something interesting looking I probably would skip it.

Dev: I know this sounds pretty asshole-ish, sorry. Im an asshole. But, if you can look at this and try to take some "constructive criticism" from it, you might be able to fix some things that while, small, still may prevent people from trying your game.

And lastly, there is always the chance I misread something here and got it all wrong. In that case, apologies, please feel free to move on after tossing the required amount of shit back at me.

 

[Rebel 357]

It won't be long till a new update gets released. While it won't have new sexual content, it aims to improve the game. I've already addressed the high encounter rate, added more exploration points, fixes to some traps. Hopefully I get notified of other suggestions or issues with the game.

As for the BGMs and SFX, the game engine currently does not have a setting for players to adjust those. At least for the BGM currently playing, you can stop it via a keypress when you're able to control your character.

Some images taken from the Game Engine.

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[Rebel 357]

Documents are included in the game build. You just have to go through a bit of folders to get to it. The files are not protected and are left that way so this game project can be Free and Open-Source.

A few game versions have been skipped over for this release. I have them ready for archival, but I'm not sure If I want to spend any time sharing those.

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[Acindil]

Hey Dev, sorry to bother you but I found if you press the enter key too quickly in combat the game freezes on this frame and the only fix is to force close the game, I'm unsure if this is a bug with the game or the engine itself, but just incase you were unaware of it I wanted to bring it to your attention.

By the way I like what I see so far and can't wait to see where you take this game, good luck on the development.

Also I apologize if this is the wrong place to report this, if it is please let me know and I'll delete this post and move it elsewhere.

 

[whisperpuppy]

Have you ever wondered what would happen if Koikatsu and Minecraft had a baby? Now you know.

Post automatically merged: Jun 3, 2026

My brain cant get past something in the desc that just makes my eyes start to twitch and swirl around.
"A world not of humans, but furry humanoids known as Fur People."

They know themselves as fur people? This is odd. If there are no "not fur people" (humans), they should feel this is normal, and just know themselves as "people". You would be the odd one. The "furless person". Or is it saying the MC dubbed them the "fur people"? If so, I wouldnt call this known.

Are you known as WTFDev because I am confused so I decide to call you that? I feel like "known as" means either it was mass accepted by a lot of people (not a single MC), or was built up over time (MC lived there by himself for 50 years calling them the "fur people", he could then say "they are known as the fur people").

And yes, this is rather stupid and meaningless, but its the type of shit that catches me when reading something like a game desc and makes me think "is the rest of the game this nonsensical?" And even when I decided this was stupid and I should move on, the next part was "to support himself in this new world <he did stuff> to support himself in this new world." So now 80% of the desc feels badly written and rushed. Without thought. So even if the games demo photos showed something interesting looking I probably would skip it.

Dev: I know this sounds pretty asshole-ish, sorry. Im an asshole. But, if you can look at this and try to take some "constructive criticism" from it, you might be able to fix some things that while, small, still may prevent people from trying your game.

And lastly, there is always the chance I misread something here and got it all wrong. In that case, apologies, please feel free to move on after tossing the required amount of shit back at me.

Also, if they are covered in fur and have never seen furless beings why did they develop the need for complex clothing and not just thicker fur?

 

[Rebel 357]

Hey Dev, sorry to bother you but I found if you press the enter key too quickly in combat the game freezes on this frame and the only fix is to force close the game, I'm unsure if this is a bug with the game or the engine itself, but just incase you were unaware of it I wanted to bring it to your attention.

By the way I like what I see so far and can't wait to see where you take this game, good luck on the development.

Also I apologize if this is the wrong place to report this, if it is please let me know and I'll delete this post and move it elsewhere.

This is the right place to report a problem. The engine itself is currently lacking, it tends to have plenty of bugs. There are even features such as being able to adjust the music level and sound effects level absent from the player!
However, I wouldn't bash the engine, it's a lot of work for a single person. The developer of the engine has been working on the engine updating consistently and frequently. I wish the creator got the support they need for that engine. Instead of donating to me, people can donate to the game engines such as RPG Paper Maker, Renpy or Redot instead. Or even donate to the tools that are FOSS like Krita, GIMP, Inskcape, LMMS, etc.

As for the bug, the creator of the engine would have to fix that.

P.S One of the things I know I'll have to adjust is the balance of Monsters, Equipment, EXP gained, coins found. For this, it will help that I get input from players.