Arena shooters

Are there any good arena shooters out there with online still active? Dont want Quake live as its riddled with ads.

Team Fortress 2 is awesome.

Unreal Tournament 99 seems to be more active than UT2004 and UT3.

OpenArena has a tiny player base but enough that you can find a game any time of the day.

RedEclipse is free and has a very active community.

If you want something around the likes of Quake live the look no furthur than Warsow.

Pretty sure they don't have ads anymore in quake live.

They'll be active, but extremely small.

I really like Gotham City Impostors. The body-types, gadgets, travel powers, specialty weapons, and good ol' fashioned guns make for a lot of replayability due to different loadouts.

Playing as a small/fast ninja with invisibility and infrared goggles completely changes the gameplay from say a burly guy in a handglider, with a rocket-launcher. Every 5th or 6th loadout feels like playing a brand new game. If you are playing for free it ay take a while to unlock entire loadouts but you will make steady progression.

That's right! I said it's free. It doesn't get a lot of hype and got very, very underrated reviews, but there are still always people playing and NEW people coming on. Considering it came out back in 2010 or so, I think that tells you all you need to know right there. Plus it's in a superhero skin which is a nice break from military realism shooters.

I also really liked the player-vs-player of Space Marine:Warhammer 40k for a lot of the same reasons as above. ....jetpacks, a sci-fi theme, etc. It's a third-person view and it did seem to take a hit in population last few times I played, however. Considering the single-player campaign is a blast, and you're gonna' be b*lls-deep in nerdgasm lore, though, you can't go wrong to try it.

Those are what I recommend. Two underrated beauties right there.