The rhythm-based "reverse time shooter" Retro/Grade has just been announced on the PlayStation Blog.
"!NSP no desaeler eb lliw ,esrever ni yleritne deyalp emag tsrif eht ,edarG/orteR," 24 Caret Games Co-founder Matt Gilgenbach jokes. "... errr… Sorry! I’m used to time being reversed."
Retro/Grade initially appears to be a side-scrolling shooter, but the game kicks off after its hero, Rick Rocket, has just saved the universe. That's just the beginning, though, as "the massive destruction he left in his wake has caused a temporal anomaly that reversed the flow of time." Thus, Rick must re-tread his path, in reverse. This is where the rhythm element comes into play.
"Rick must undo his actions exactly the reverse of the way he performed them in the first place," explains Gilgenbach. "That means he has to get in the appropriate space lane from which his shot was fired and press the shoot button at the appropriate time. As well, he must avoid blocking the path of the enemy shots as they return to the enemy’s guns. If he blocks their path, it creates a paradox since he is stopping the shot before it was ever fired."
Confused? That's quite understandable. Check out the game's debut trailer to come to grips with Retro/Grade's unique premise.