An excellent FPS with okay graphics and well-done gameplay, GunZ Online is a pure try. You can finish it off in a duel, deathmatch, team deathmatch, quests, and so much more! There is a variety of weapons, but no variety of clothes, usually three sets per category, excluding the hat, which is nothing. Paying is what you can get for much better swords, hats, and better armor, but without paying is no variety, except for the weapons. Overall, an excellent game, decent community. It's hard to find people without clans in the free channel.
GunZ Online is an awesome FPS. It is purely awesome of awesome.