Atolla Modulis is a free modular expansion to Friedemann Friese's Power Grid (aka Funkenschlag 2nd Ed.). The Atolla Modulis system allows players to play a different game every time as there are thousands of possible combinations! Other than the initial setup, the Atolla Modulis plays with the same rules as the base game. A copy of Funkenschlag/Powergrid is required to play this expansion. For helpful hints on building your own version, visit the BGG Wiki page on Print and Play Games