I think those are really good minigame ideas! We do need some strategy games. A battle system isn't quite a minigame though; at least with petsites it tends to be a standalone feature where you can participate only with pets that you own, and the outcome of the battles are determined by a combination of strategy, luck, and pet level/stats. I love chess and checkers, but if the battle system was purely strategy-based, then only smart people would win, which wouldn't be fair to slow fools like me xD