Changes:

1. Altars:
   1. There will only ever be one altar on the map at a time.
   2. The altars also spawn closer to the VOID.
   3. If an altar is destroyed it increases the chances of "bad" events. 
   4.  Altars give +500 points by default.
2. Visual update
   1. Each tile has 3 different looks.
   2. Added small decorative elements to most tiles.
3. Some new sounds.
4. The world is now ripped away when losing.

Hope you enjoy the game!