價格：免費
檔案大小：1.2 MB
版本需求：需要 iOS 8.2 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Go Green. Stop wasting papers. Play XO game on your iPhone and iWatch.
XO.XO. is 2 player game, so you can play with your friend.
iWatch version has 3x3 game and iPhone version has 3x3 and 6x6 games.
支援平台：iPhone