Alien Swarm is a 3D, Sci-Fi MMO shooter with a top-down view.  Up to four players work together to complete objectives while shooting AI controlled, insect-like aliens.  The game supports forty weapons and items, has multiple character and class options, and allows creative players to create their own content!

Publisher: Valve Corporation
Playerbase: Medium
Graphics: Medium Quality
Type: MMO
EXP Rate: High
PvP: N/A
Filesize: ~2060 MB

Pros: +8 characters, 4 classes. +Achievements to earn. +Offline practice mode. +Supports custom add-ons & maps.

Cons: -Only one campaign, very few maps. -Limited character customization. -No competitive game modes.

Robo Smash is a 3D MMO shooter that involves robots and deadly blocks. Players battle it out in arenas and can use giant blocks to help defeat their opponents. Robo Smash supports up to 6 players per match and has a third-person view.

Publisher: KRU Interactive
Playerbase: Low
Graphics: Medium Quality
Type: MMO
EXP Rate: Low
PvP: Various Modes
Filesize: 146MB

Pros: +Blocks add unique gameplay element. +Four game modes. +Supports up to 6 players per match.

Cons: -Low playerbase, difficult to find a game. -Confusing at first, steeper learning curve than similar MMOs. -Not enough content.

MicroVolts is an anime inspired 3D MMO shooter. With unique characters and a third-person view, MicroVolts offers quirky Team-Fortress 2 style visuals mixed with team based gameplay. Chose from dozens of weapons and battle it out in MicroVolts!

Publisher: Rock Hippo Productions
Playerbase: Medium
Graphics: Medium Quality
Type: MMO – Third Person Shooter
EXP Rate: Medium
PvP: N/A
Filesize: ~650 MB

Pros: +Interesting art style. +Great map designs. +Fluid gameplay.  +Unique toy theme. +Players can equip 7 weapons at once.

Cons: -Some latency issues. -Limited character customization options. -Few game modes. -Gameplay gets repetitive

CosmicBreak is a 3D, sci-fi, third person shooter MMO with giant mechs.  Join one of three warring factions and create a custom robot by mixing and matching parts.  Play cooperatively or competitively through the many game modes in CosmicBreak!

Publisher: CyberStep
Playerbase: High
Graphics: Low Quality
Type: MMO – Third Person Shooter
EXP Rate: Medium
PvP: Multiple Modes – up to 30v30 battles
Filesize: 414 mb

Pros: +Fast-paced gameplay. +Over 50 playable bots & 300 parts. +Co-op missions and quest modes. +Simple keyboard controls & gamepad support.

Cons: -Blocky visuals. -Limited graphic options. -Repetitive gameplay. -Interface lag.

War Inc. Battle Zone is an independently developed first person shooter MMO. Build a soldier through skills, abilities, and a variety of weapons to challenge players head-on in team matches that support up to 32 players per map.

Publisher: Arktos Entertainment Group
Playerbase: Medium
Graphics: High Quality
Type: MMOFPS
EXP: Rate: Medium
PvP: Four game modes
Filesize: ~1000 MB

Pros: +High production value. +Balanced gameplay. +Large maps with high environmental detail. +Responsive controls

Cons: -High system requirements. -No character customization. -No FPS innovation.

Mission Against Terror (MAT) is a 3D, MMO first person shooter. Players can take part in classic deathmatch modes, or the more exotic mummy mode. MAT offers traditional FPS gameplay, and some social features including the ability to customize your avatar and visit virtual bars.

Publisher: Suba Games
Playerbase: Medium
Graphics: Medium Quality
Type: MMOFPS
EXP Rate: Medium
PvP: N/A
Filesize: ~1024 mb

Pros: +Simple controls, and low system requirements. +Optional tutorial. +Decent selection of game modes.

Cons: -Dated graphics. -Gameplay can get repetitive. -Few maps. -Buggy gameplay. -Copied maps from Counter-Strike. -Only a handful of weapons available.

CrimeCraft is a 3D third-person shooter with MMORPG elements. In a not so distant future, the world lies in anarchy with gangs having replaced governments. Players are forced to join up with a street gang for mutual protection and to earn a living. With high quality visuals, single & multiplayer game modes, gun customization and crafting options, CrimeCraft is a unique MMOFPS.

Publisher: Vogster Entertainment
Playerbase: Medium
Graphics: High Quality
Type: MMO
EXP Rate: Fast
PvP: Multiple Modes
Filesize: 3000+ MB

Pros: +Amazing graphics based on the Unreal 3 engine. +20 maps, 10 game modes. +PvE missions provide single player content.

Cons: -RPG elements have no depth, plays almost identically to a lobby based shooter. -Somewhat awkward controls

Project Blackout is a 3D tactical MMO shooter with an urban setting. The government of Korogese has collapsed, while rival corporations and mercenaries vie for control of the streets. Fight on immersive maps that contain helicopters, destructible environments, and other exciting features.

Publisher: SG Interactive
Playerbase: Medium
Graphics: Medium
Type: MMO
EXP Rate: Medium
PvP: Open
Filesize: 500 MB

Pros: +Great title system. +Complete missions to earn equipment & experience. +Customize weapons with add-ons. +Solid map designs.

Cons: -Similar to other tactical shooters. -Few game modes and maps. -Limited appearance customization options.

Cross Fire is a 3D first person shooter that looks and plays a lot like the original Counter Strike. Cross Fire has 4 game modes, including a unique ‘Ghost Mode’ where one team is nearly invisible but armed only with knives. Gain ranks, earn GP, buy new guns and keep track of your kill/death and win/loss ratios in this fast paced tactical shooter.

Publisher: SG Interactive / EU
Playerbase: High
Graphics: Low
Type: MMO
EXP Rate: Medium
PvP: N/A
Filesize: 268 MB

Pros: +Small download, fast install. +Varied game modes. +Players start with a lot of GP. +Short optional tutorial.

Cons: -Dated graphics. -Few original or unique features. -Repetitive gameplay.

Metal Assault is a 2D MMO shooter with cartoony graphics. Chose from four classes and battle hordes of zombies with a small group, or face off against other players. Metal Assault is a side-scroller with a gameplay style similar to oldschool action shooters like Contra.

Publisher: Aeria Games
Playerbase: Medium
Graphics: Medium
Type: MMO
EXP Rate: Medium
PvP: Several game modes
Filesize: ~495 MB

Pros: +Four playable characters. +Cooperative and Competitive game modes. +Bright, stylish visuals. +Numerous game modes. +Unique gameplay.

Cons: -PvE game modes feel a bit too easy. -Gender locked classes.