Peek A Boo

A light-based FPS where the player has multiple stages to progress through before they can find the glowing green heart in the final stage.  All stages are mostly based in darkness, requiring the use of a local Light and Environment Scanner abilities.  Killing all enemies in a stage will reveal the exit portal, though the Portal will self-open after a period of time (3min).  You know you're at the end when  you reach the stage that's in the light and open sky.  Find the heart in that final stage to see what score you've received.  The faster you complete the game, the higher a score multiplier you'll receive.  Kills add to score, Deaths subtract.

Good luck navigating through the darkness.  And just remember, around every corner you might just find a....  Peek A Boo!!