I played a little bit of Gish maybe... 8 years ago? I don't recall why I put it down, but after playing again today as part of my 2000s video gaming adventure, I figured out pretty quickly why. It plays as a platformer, but it's pretty awkward at times to even aim and land your jumps since you have to bob up and down and can't change your momentum fairly well. I also found myself without enough momentum to stick to walls (or too much momentum to stick to ceilings) and this led to a pretty frustrating experience unfortunately. Couple this with a boss fight where I just got assaulted by enemies and could barely jump, much less land successful attacks. I think it's a pretty cool idea but there are definitely much better games that pull this off nowadays and it unfortunately has not aged well in my mind.