xo.zip is Commercial
program for Windows developed by Setup Group
The XO is solicitation of leading and non-classic committee games as checkers, shashki,
universal checkers, gomoku, renju, pente, connectris, othello, ataxx, barrier, stack4, clobber, entropy, Cats and Dogs, LOA, 3 Musketeers and more.
xo.zip is availible for purchasing with PayPal/Credit Card/Money Order/Bank Transfer