The great sandbox rivalry, playable: Toca Boca Vs Avatar World puts both universes in one game and lets you hop between them - Toca's story-first playfulness on one side, Avatar World's magical towns on the other.
You explore both, play with the characters of each, and inevitably end up with an opinion in gaming's most passionate playground debate. The game itself doesn't pick a winner; that's your job.
A clever sampler if you're deciding which world to sink hours into - or a diplomatic answer for players who refuse to choose. Free, browser-based, no signup.