This is a platformer featuring Kevin. Kevin is a square with a :/ face. He's lost in a mysterious world and needs your help getting out. Up arrow to jump, left and right arrows to move sideways. (You can also use the down arrow to skip a level).
This was inspired by a tutorial by @Warframe. The song is Mouth of the River by Imagine Dragons: https://www.youtube.com/watch?v=YiZCzG4RF1M