Like the idea with the conveyor belts, had a little trouble to find out, when a skeleton kills you. Do Skeletons loose their heads, too, so you can collect and use them or ist skull and skeleton two seperated things in the game?

Good job. The game's setting is weird (in a good way), and the mechanic is easy to pickup. I like the direction the game is headed towards; it can become really fun with more time put into it.

Never seen a skeleton factory before in a game, very interesting setting. 

Not sure if it was a glitch but thrown enemies would often fall through the belts. I think it's more interesting if the player can take the conveyor belt to their advantage and throw skulls in such a way that they return to the player.

Nicely polished as well. Good job.