Pokémon Showdown: The Eagledome

It's not all meta, though. I've used literally the same team with the same moves and EV layout dozens of times with the same person so she knows exactly what to expect and I've still come up on top due to good read of her as a person and good planning. It's definitely a very different game from normal Pokémon so it takes a bit to learn, but in casual online battling it isn't all about meta team builds.