Take the best people behind the classic mega man games, and stick them all in an office and tell them to make a game. This is that game.

The classic Spaceship Physics game that is challenging even for actual rocket scientests.

Take the position of a plane crash survivor and live off your raft paddleing between islands and battleing sharks.

Made by the same people who brought us Space Engineers, this game has more of the physics sandbox action, but on earth, during medieval times.

The easiest way to discribe this game is Minecraft in space with more realistic Physics. It is currently in pre-release/Early Access.