I got addicted to World of Tanks recently. Definitely the best online game I have played for a while, besides WoW and MapleStory (I'm still a kid at heart).
Everyone should play WoT. It's AMAZING.
But it's freemium free-to-play. It took me several hours to finally get a Tier 5 tank. Be prepared to spend lots of time on it if you play.
If you have CnC Generals ZH, be sure to download the Rise of the Reds mod. The best.
This group is for everyone who like tanks, sci-fi tanks, real tanks, funny tanks, you can put here tank mods, tank maps, simply everything with straps...