Atrium rules

Atrium is played on a 5×5 board with the following starting setup:

A B C D E 1 1 2 2 3 3 4 4 5 5 A B C D E

Each turn players one of their or one orthogonal step. Blocking units are pushed out of the way, if there is a free square for them to move into.

After moving the following checks are made:

  • winline - if you have an orthogonal or diagonal 3-in-a-row of all three units of a single type, you win!
  • loseline - otherwise, if you happened to create such a line for your opponent, you lose!