Not sure if I'm misunderstanding you, but to sort by last update that doesn't go by thread, go to the forum page and click on games. From there you'll see sort and filter options on the right side. Hope that helps!
I will say that a suggestion I have would be that the page I'm referring to above automatically sort by last game update instead of last user message, but that probably goes against the whole 'being social' drive this site has been going for lately
I suggest to improve the search box, with engines, prefixes, tags wanted, excluding tags and can organize the results by many kinds os results... Thanks
I feel like a wider array of tags is necessary. A side note is that because of the implementation of LC Coins there is now just a bunch of unnecessary filler comments that don't contribute to discussion and just look bad. A minor note though.