An anonymous reader writes: The Keeper of Shadows is a new alternative history game where you decode an ancient archaeological puzzle. This features a real 3800-year old tablet from Ancient Iraq which contains a mathematical table. The numbers on it follow a strange relationship according to the Theorem of Pythagoras....more than a thousand years before he was born.
Speculations suggest that this is a trigonometric table, but the ratios are not in such a sequence. Some say this is a school exercise but questions remain... why does the 3rd column contain 8 prime numbers out of 15? What if this isn't a school exercise....but an astronomical record of some planetary event?
This alternate history game is part of the ZetaTrek project, which was mentioned on Slashdot last year.