The new Shadowrun games are excellent! VERY low-power CRPGs with a nice aesthetic.
Fallout 1 and 2 are good bets, too. They’re old enough that you pretty much have to just rely on your touchpads, but if you don’t mind that they’re fantastic CRPGs that run shockingly well on the Deck. For that matter, Fallout 3, New Vegas, and 4 all run really well.
Black Ops 3 has a splitscreen mode, primarily for zombies but I’m pretty sure it works for multiplayer and campaign too. Ideally you’d want to get it with zombies chronicles because that’ll give you a bunch of classic maps, but even with absolutely zero DLC you can get a TON of custom maps.
I BELIEVE Portal 2 has splitscreen support on PC? Picking up the new Lego Star Wars is a good time, too, and Left 4 Dead 2 has a couple of relatively easy-to-install mods that enable a splitscreen mode too.
If you don’t already have it, get some Terraria in there. Plays great on the SD and gives you an absurd amount of content for its insanely low price.
And whenever I recommend video games I inevitably end up going here, so… Hey, get Outer Wilds while you’re at it. It doesn’t have a ton of replay value as its progression is entirely focused on your knowledge so once you know what you’re doing that’s kind of it, but it’s a literal life-changing sort of experience if you let it get its hooks in you.
Black Ops 3 with zombie chronicles gets you a ton of solid maps, and because it’s on Steam instead of consoles you also get the advantage of the HUGE backlog of workshop maps.
Sonic Mania is only $5 and is still a blast, even to me, and I’m not a particularly big Sonic guy.
Finally, pick up Risk of Rain 2 and Risk of Rain Returns. Some of the best roguelikes on the market right there.
The amount of downvotes tells me the transphobia is just vaguely disguised, which is sad. I’m glad there’s practically nothing but support in the comments themselves, though!
Depends on how long I anticipate staying in sleep mode. If I’m gonna be putting the thing away for more than, say, 30 minutes? I’ll put in the effort to find a safe spot to save and I’ll close the game, but anything less and I’ll just suspend it.