Terraria meets Super Metroid plus: Asteria
Asteria is a 2d platfromer comparable to Terraria + Super Metroid plus, with a procedurally generated destructible sci-fi world that you can explore with your friends online, mine together, collect unique items and of course craft! The developers of Asteria have not only added a creative mode where you can let your imagination loose but also will support extensive modding of the game. Asteria is currently in Alpha however you can already buy the game directly from the developers with a discount and vote on Steam Greenlight.
GET IT: Asteria