Andrei Dogaru made some other great games which you can find on his itch.io page and Greg Magee makes really good music which you can find on his Soundcloud page.
The game itself:
You start with a basic menu where you can choose for 'Start' or 'Options'. Onder the options can you change the colors of the game. If you click on start, you will spawn in the world. You walk with the arrow keys or the 'A' and 'D' keys. You jump and smash with the space key. Smashing is the most importent thing in the game. With smashing can you kill monsters, jump higher and jump further.
The game runs like you aspect from such a simple game, no lag or something like that.
I really, really enjoy this game. It shows that you don't need high end graphics to make a great game. It runs well on Windows and on Mac. Unfortunately not on Linux but that's not a really big problem.