It was announced today that the Penny Arcade Expo has completely sold out, but gamers who were lucky enough to already get their badges have a ton of MMO excitement waiting for them in Seattle from Sept. 4-6, or you can keep an eye on ZAM.com for all our PAX news.

We've already reported there will be a playable Star Trek Online demo on the floor and CCP will showcase EVE Online at the convention, but that's only a taste of what's in store at this year's expo. Keep reading after the jump for just some of the other games you can expect to see on the floor at PAX 2009.

EVE Fanfest 2009 is scheduled to be held from Oct. 1-3 in Iceland, but CCP is using the convention season as a way to prepare for the big event. To that end, EVE Online will have a presence at the Penny Arcade Expo in Seattle from Sept. 4-6, Dragon*Con in Atlanta from Sept. 4-7, and the Game Developers Conference Austin from Sept. 15-18.

If you can't make it to Iceland in October, you still have a chance to get your EVE convention fix this year. According to the announcement by CCP Manifest, PAX is "one of our favorite shows each year, bringing the unbridled enthusiasm of video games to the downtown area." So if you plan on attending, make sure you stop by the CCP booth and enjoy some PvP at the stations.

If you're a Star Trek Online fan who's planning to attend the Penny Arcade Expo in Seattle from Sept. 4-6, Cryptic has some exciting news for you. A playable demo of Star Trek Online will be available at the Atari booth! The game's not even entering closed beta until later this year, so this is a great time to get your hands on Star Trek Online and get an early look at how it plays.

As a reminder, the Champions Online discounted subscriptions are available until Aug. 31 at 11:59 p.m. PDT, and each one comes with access to the Star Trek Online closed beta. If you're at all interested in the superhero MMO, it's a good way to make sure you'll get to try out Star Trek Online later this year.