Use space to place a blakc hole (black cube actually) and wasd to move it. Then press space to start the simulation. Try to suck as many grey cubes in as you can.
I wanted to make a game that involved controlling different objects using black holes.
First, I added the ability to place and move black holes. Then, I tried to make the grey cubes disappear when they they touched the black holes, but I didn't get to that part. I also wanted to have blocks that wouldn't be affected by black holes and I wanted the game to count how many black holes you used.
The general gameplay is pretty original, or at least would be if I was able to finish it.
I think the physics interactions are interesting, but the game needs more mechanics to be fun and there needs to be more feedback about the player's performance.