Retrobooster creator Really Slick released a new demo version for Windows and Linux showing off the game's current state.

Retrobooster is "a high-tension survival shooter" in which players solve puzzles and explore unfamiliar environments in a thrust-driven ship. The gameplay mechanics appear to be similar to classics like Solar Jetman and Subterrania -- mastering the game's controls and physics in the enemy-filled areas seen in the trailer should prove to be quite a challenge.

Retrobooster also includes split-screen cooperative and competitive multiplayer modes for up to four players. The full version is set to be released in 2013. Retrobooster is also up for vote at Steam Greenlight.