>>31421760An ingame arcade would be tits actually.
Just put in some basic minigames, like some puzzle kind of game (Tetris or something), a basic sidescrolling beatemup (you pick from a couple of available fighting pokémon, and it's basically a mini-Final Fight), a racing game (fast pokémon compete on a track), and some kind of shooter (something a bit like Hogan's Alley or Wild Guns, with pokémon exchanging projectile attacks).
In one corner, there's one of those bullshit cranegames where you can grab some prizes if you're lucky, and next to it is two vending machines for drinks.
Depending on score you get in the arcade games, you can win points (maybe 1000pts in the games is 1pt you can use for exchange), these special points can be used to get prizes, the more points, the nicer the prizes.
Of course, there needs to be a couple of trainers which you can challenge once a day, like punks and whatever.