Dungeon of Numenas
I made this game a while ago (it was published on itch.io on the 7th of January 2019), but at the time didn't know about uploading carts to this page, and I have finally taken the time to do it.
You can find it in itch.io here.
Use the right arrow key to move right and the left arrow key to move left.
Jump with C or Z.
Enable/disable the timer using X (you can only perform this action while in the titlescreen).