GRO is an abstract strategy game for 2 players. Each player controls the growth and expansion of a strain of bacterium within the confines of a Petri dish. The goal is to become the dominant strain.
Each player starts with a single germ. Germs may grow and divide to produce more germs, which may grow and divide to produce more germs, which may grow and divide...you get the idea. Germs may also move, and they may attempt to surround opposing germs. When a germ is surrounded, it dies.
The Petri dish contains 4 goal areas. The first player to gain exclusive control of 3 of the 4 areas, wins.
GRO is available in Portable Document Format (PDF.) The file size is 2.5MB.
|1||Cover Art by Randy Farran|
|2 - 5||Rules|
|6 - 7||Help Sheet - print 1 for each player|
If you would like a hard copy of GRO, you may be able to find one gathering dust at your local game store. Or you can buy it from one of these online retailers:
A German language version GRO is available from Sphinx Spieleverlag It was translated by Henning Poehl and re-titled Kampf der Kulturen. The German version features colorful artwork and fuzzy germs.
You can play GRO on your PC thanks to Stephen Tavener and Zillions of Games. Zillions is a versatile engine that can be programmed to play just about any 2 player, abstract game. Stephen wrote a Zillions game file for GRO. Thanks Stephen!
You are free to make copies of our games for yourself and your friends. However, Interformic Games retains full copyright to all of its games.
All Interformic Game files are in Portable Document Format (PDF.) You can read and print these files using Adobe's Acrobat Reader. If you do not have Acrobat Reader, you can download a free copy from Adobe's web site.
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