A 詰みげー refers to a hard game that causes a player to become stuck, unable to progress. In effect it "checkmates" the player, which is why the word 詰み is used here. Usually there is the implication that the player has to die multiple times to figure out how to continue making progress.
Something like Nethack or most PC roguelikes would qualify. Dark Souls too, maybe.
Some casuals people may also use the term to refer to long games (RPGs) that they don't have the time to finish, but that's sort of an abuse of terminology.
There's also another confusing homophone, 積みげー. This one refers to "piled-up" games that the player hasn't even started playing yet.
I've never heard 罪げー being used to refer to R-18 games before. The only uses I've seen involve puns on 積みげー, i.e. the speaker implies it's a sin or shame for buying an entire pile of games but not playing them (because it's wasteful).
After the eventOne hour later Backlog?Probably going to lay low in my room while clearing up some games on my backlog...ka-chakTROUBLE
IS DEAD
HEEEE-YAAAARRRGHH!
Sis?! You're serious?!I'm gonna fuckin' kill any troublemaker in my way!! Literal translation: If there's any trouble, just [crude intensifier] kill it off!!
Actual words by Nomizu Iori, albeit posed in the hypothetical. By all means, pleaaase!Come get some!
chatter chatter
ka-chakI don't really get it, but that does sound fun.Looks fun.What I'm going to do during my break, you ask?First Carrier division distance increased BOOOYAAAAAAAH!!
UWWWWAAAARRGH!
Hey—
If you're okay with it, maybe, could we join in the fun?Um, this isn't what it looks like. She's just getting a little rowdy and a bit carried away by her gamer's blood, that's all.☆Nom*zu-san is soooooo funny! (Seiyuu joke)Yep, Nomizu Iori, the cranes' seiyuu is a gamer (particularly a fan of the Demon Souls/Dark Souls/Bloodborne series). And a Let's Player as well.
She also plays FPSes like Division, and at least one Western RPG — Divinity: Original Sin.