Can I get some idea on Indoor games to play at home with my kids?

How old are your kids? I have 2 nephews. One is about 18 months old so what I do when he comes over is we play catching lol. And the usual stuff like hide and seek, lego. The other nephew is only 1 month old so he doesn't understand games when I explain the rules to him. He mostly sleeps through it so i end up playing the game by myself hahahahahaha. If your kid is maybe 4+ and above, can start introducing them to slightly 'mentally' challenging games like checkers and tic tac toe. Or or games like 5 stones(culture is important). Try to avoid ipad games I feel. Keep em either physically or mentally fit!