This is Super Mario Bros. Version 10... with Luigi as a character! Use arrow keys to move and jump. Collect the coins. Jump upon Goomba enemies (twice!) to beat them. Here's a walkthrough: https://www.youtube.com/watch?v=ONtHRrN-cDQ
The music: Stuff from the original Super Mario Bros. by Nintendo. The sprites: Stuff from the original Super Mario Bros. by Nintendo Original project: see below
