Ataxx is the real original game by the authors mentioned at the Assimilation rules. Due to a former misinterpretation of the rules, this one was added after Assimilation. There is only one (but important) additional rule:
A piece can be moved 2 spaces in a L-shaped jump, identical to a knight move at Chess. This move causes no duplication, the piece is really moved and disappears from its former position.
(hide) If you are waiting for your turn, click on "change" next to the "refresh" on the main page, then set refresh the page to 30 seconds to get your turn to move displayed faster. (Servant) (show all tips)