Was able to play! (new PC arrived in the mail)
The art looks fantastic! The animation was nice, changing the perspective of the room was kinda neat, and the main menu and music all fit together very well.
I had some difficulty figuring out what I was supposed to do. Had to look at the hints to figure out what the batteries were. I noticed the battery lights up - maybe if it kind fizzled or made some sound effect to indicate a charge would help the player notice the difference with the black cube?
And a few glitches where it seemed like my player fell of the map (usually when trying to go up the stairs, I think)
Awesome stuff!