I fancied that Gungeon game when it first appeared and there's the meat boy sequel I got on Switch in a sale.... but it will be a while before I tackle that. I'm at 50% of Cuphead and that needs put right...likely the next non pure shmup I tackle but I want to 1CC Mushi Futari next.
There are other things I'd like to achieve...a deathless 500m in arcade Mr. Driller and then a 1CC of 1000m. Just never knuckled down to it. Wouldn't make for good YT videos though.
A 1:30 40 lines at Tetris but that's a long term goal. Also never completed Bangai O.
It' not really a get lost kind of game, but it's one of those where the layout and item drops change every time you play. You get one life to succeed, and it's back to square one if you die (with caveats), but you're learning how to play the game well enough to beat whatever it throws at you rather than learning to overcome a set pattern. Plus with items drops being randomised it also means that there's a lot of luck involved as each 'run' might be particularly nasty, nice or somewhere in between.
Kryptonite for you I reckon, or @retroking1981 - which is a shame, because it's genuinely about as good as shooting in a 3D space has ever been - but it's a very popular template these days. There are plenty of roguelike 2D games you'd enjoy mechanically (Gungeon, for example), but not structurally (#I reckon).
Aye - 3D just leaves me cold. My PC might not be up to it either. (I do like Portal though - but I haven't spent proper time with it)
I find it hard to describe what I like. I didn't really like Meat Boy at first - it languished on my PC for several years after I abandoned it in chapter 2. I bought it as a physical copy of a game so it was quite a while ago. I'm not entirely sure what got me back onto it.
I prefer tightly focused levels and an overall tight structure to a game that is linear but does give me options if I get stuck. I don't actually mind the idea of an algo-generated batch of levels if the goals are clear.