The question doesn’t mean anything. Different games use different engines and requires different hardware acceleration. Name a few games you’d like to play then people can chime in knowing what you’re looking for.
My iPad 6 plays most games well except fortnite but it’s a poorly optimized game. Plays pubg on high, call of duty on high, grid auto sport plays well like most other games
the chipset is a bit older now but still a powerful one. If newer more powerful games come out, it might start to struggle. IPad Air 3 might be a better bet if you can stretch the budget a bit more. The A12 has a pretty powerful gpu in it