gameplay: FIRST PLAYABLE VERSION! (0.1a)
* Exciting hotseat with your friends!
* ... assuming you trust them.
* Put down basic tiles by clicking on an empty space.
* If you surround a space with 4 neighbours (diagonally; i.e. 8-way) of your basic tiles, one of your basic tiles will spawn there.
* If you surround one of your basic tiles the same way, it is upgraded to a Special tile.
* Special tiles can attack enemy tiles, jump (exactly 2 distance diagonally) over tiles into other spaces, or swap with any basic tiles that you own.
* No "chaining" available.