Just Add Water's PSP conversion of Gravity Crash will be released tomorrow on the PlayStation Store.
The game will cost £6.30, or €8 if you live in the Eurozone.
The PSP version has had numerous enhancements: there's a third ship, five weapon slots, more weapon pick-ups, clearer objectives, continues, Survivor mode and a Gold Grabber mini-game.
Gravity Crash was released for PS3 in December, but struggled to keep pace with other retro-inspired shooters PixelJunk Shooter and Geometry Wars. Oli Welsh reviewed Gravity Crash for Eurogamer.