Aaaaxy is a nonlinear 2D puzzle platformer taking place in impossible spaces

Available also on F-Droid, Itch, etc.

https://f-droid.org/en/packages/io.github.divverent.aaaaxy/

"To reach the end, a new player will take about 4 to 6 hours, a full playthrough can be finished in about 1 hour and the end can be reached in about 15 minutes."