Best online multiplayer app

[AppleXgamer]

What are some of the best multiplayer iphone games in which you can upgrade things and keep playing for a long time? The only game i know that has really kept me playing was Cartoon wars but that doesnt have an online. Anyone have some suggestions?

 

[LSUtigers03]

I've gotten a lot of playing time out of Homerun Battle 3D. Also for playing with someone on the same wifi Let's Golf is great.

 

[Rayfire]

You could try [app]Galcon[/app], best purchase I've ever made