Eternum is very fun, but it's pure VN and is carried by the writing. Gameplay wise, trainer games like the classic Akabur games are are always fun for me, but those are a rarity nowadays. Oh and I do enjoy the gameplay loop of The Null Hypothesis.
It really depends on the game. Some games I just let it sit and wait, so when I get to it there is a lot to consume. But there are some games like Eternum where if it updates, I gotta play it.
The price for things went higher and I kinda got unlucky with the timing of trying out P1 for a month. I should have just vaulted it, Oh well, time to save up I guess.
The power would be Teleportation, with the drawback of being that time passes as if you physically travelled there using the most effective route/vehicles. So Teleporting from California to New York would eat up 5 hours, but to you and anyone you teleport, it feels like you instantly travelled...