Oh, I was going to add, there is also a trophy for the Treasures of the Crystel Sea game. But it's not an arcade game, so that's why I forgot to list it in the first place.
Yes, Webkinz Rally has a trophy. I'm actually trying to win that one right now. To get it, you must pass all ten levels. So far I've made it to level six. I reccommend wildhunt's guide if you need help, which can be found in the Webkinz Rally section of the Gamez forum.