Ruins & Switch is a free puzzle-platformer developed by 4 students. The main twist is the character's power, which allows you to build and/or destroy blocks to get through the levels. There is a small plot and a bit of kinematics, all in a very retro atmosphere, with 8-bit music and pixel art. After 28 levels through 4 worlds with 5 bosses, it is possible to make your own levels and share them with other players. (As a compressed character string that must be copied and pasted.) You should use a gamepad if you have one.
https://fabsquare.itch.io/ruins-and-switch