Pleasantly surprised with this game. I kind of avoided it because I'm not into comics, and I know next to nothing about X-Men, but it's fun and the girls are cute/sexy. Lack of sound is a bit sad, but OK - I just play some music while playing the game.
Running it through Linux terminal gives you a lot of the following error:
Bash:
libpng warning: Buffer error in compressed datastream in iCCP chunk
libpng warning: Profile size field missing from iCCP chunk
I think that it's associated with the game slowing down "randomly". Looking further, perhaps this could be solved by updating the built-in python and ren'py libraries.
I also wish that the flying +X and -X numbers (when you interact with the girls) included some icons, it's better to get a clue on what's raising/lowering. Like, I know that blue is obedience and yellow is *lack of* inhibition, but past that I simply look "it's a plus so it's good".
The mechanics are well thought - different actions yielding different results depending on your relationship with the girl, and there's visible progress although it's a bit slow.