Games like Deuterium Wars on Steam
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Cartoon Strike
"Different realities, different rules, but always fun". In the multiplayer game Cartoon Strike, each map offers a different gaming experience. Players can enjoy a few minutes of fighting in the WWII, followed by a few minutes in the present, future or even funny mode.
Panzar
PANZAR is a fantasy multiplayer third-person shooter. You get to choose from eight unique character classes, team-based PvP battles, exciting PvE adventures and regular tournaments with real prizes. Advanced RPG elements, the non-target combat system and the most modern graphics by CryEngine 3 will make your combat experience...
Strike.is: The Game
Load your gun and dominate the best multiplayer mobile shooter game!
The Ultimatest Battle
The Ultimatest Battle is a real-time, 2D platform game in which two teams compete in different game modes with an almost completely destructible environment. UB is a true Free-to-Play, absolutely no Pay-to-Win.
Bloodline Champions
Bloodline Champions is a Free-to-Play online PvP Arena game where players engage in short, intense battles of up to ten players divided into two teams. Each player takes control over one of several bloodlines, each with their own unique weapons and abilities. Easy to learn, challenging to master.
APB Reloaded
The world’s first and premier Action MMO Third Person Shooter allows you to choose between two sides of the law. Play as Enforcer or Criminal, customize your gear for the task at hand and hit the streets and play how you want in a city filled with more action this side of a Hollywood blockbuster.
Champions of Regnum
Choose your Realm and engage in the most dynamic player driven battlefield available on any MMO. Fight for the Alsius Empire, protect the woods of Syrtis or avenge the Brotherhood of Ignis.
Global Agenda: Free Agent
2155. From the ashes of the devastating Third Great War rose the Commonwealth, an oppressive world government determined to control the entire planet. The few remaining independent factions retaliate the only way they can, with elite teams of special operatives trained in advanced warfare tactics and equipped with high-tech weaponry.
Just Cause™ 3: Multiplayer Mod
Just Cause 3 Multiplayer mod is a free fan-created project bringing an explosive and highly-customizable multiplayer.
Guns and Robots
Guns and Robots is free to play online third person shooter. The game brings robot action with massive customization. Players get cartoony bright 3D graphics in attractive environments and challenge each other in open arenas.
Villagers and Heroes
Enter a magical, 3D fantasy world filled with hundreds of unique locales, immersive lore, and exciting quests -- and it's all free to play. Join thousands of players from around the world, and be part of a one of a kind community.
Light Bearers
Light Bearers is a multiplayer asymmetrical hide and seek game that pits a sinister shadow against cute light bears!
Formicide
Formicide is a fast-paced 2D online platformer with a lineup of versatile classes. Think Worms meets Team Fortress 2. Face off with teammates against enemies in destructible environments with the weapons and abilities at your disposal.
Requiem: Desiderium Mortis
Requiem: Desiderium Mortis is a Free-to-Play MMORPG set in a dark distant world where an event known as the "Thanatos Incident" rendered the world almost unlivable. Create your own biological weapon known as a Temperion and experience the horrors that grip Ethergia.
pla_toon
pla_toon is an action-packed, first-and-third-person, multiplayer, light-hearted, cartoon-style shooter where you as play a soldier. Join the multiplayer battle and be the first to a para-crate drop to equip your player with powerful weapons! Or get on an ostrich and ride off into the sunset...
Forkdrift
Have YOU ever wanted to flip your friends? How about driving a forklift? Or maybe picking up boxes too heavy for the mortal man? Well now you can, in Forkdrift! Forkdrift is a online PVP game centered around action-packed, competitive forkdrifting!
Techwars: Global Conflict
TechWars: Global Conflict is the world’s first isometric PVP mecha-action with direct control. Only the strongest player will be able to win in this war of titanic mechs. Use all the features of world’s realistic technology Techwars. Victory in every battle will bring you closer to creating your own death machine.