Games like Apotheon Arena on Steam
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Unearned Bounty
Unearned Bounty is an action-packed Free-For-All multiplayer game where you battle to become the most infamous pirate!
Warplanes: WW1 Sky Aces
Be a pioneer of aerial warfare in Warplanes: WW1 Sky Aces. Fight above the battlefields of World War I and become the ultimate Sky Ace!
Grimoire: Manastorm
A free multiplayer wizard FPS which features six classes to master with thousands of possible spell loadouts. Choose your class of magic, customize your spell book with dozens of abilities, and battle against others for supremacy in FFA or Conquest, or go solo to survive against waves of the undead.
Spellsworn
Enter a world of magic and battle, where your wits and reflexes will be pushed to their limits! Choose your spells, enter the ever-changing arena and prepare to obliterate all who stand in your way!
Super Crate Box
Vlambeer's SUPER CRATE BOX is coming to bring back the glory of the golden arcade age, when all that really mattered was getting on that high score list. Grab your baseball cap and loosen your pants, it's time to fight endless hordes of enemies and collect every weapon crate you can.
SYNTHETIK: Arena
Face the varied challenges of the Machine God Zir in ARENA, a standalone expansion for Synthetik: Legion Rising! Leverage the next level in gun-play and experiment with powerful tech in varied action packed Arenas!
Deuterium Wars
Deuterium Wars is a rapid 2D shooter. Create your own aircraft and plunge into heated battle with other players. What awaits you: an extensive role-playing system, craft, trading, and much more on a single server for all platforms.
Pink Heaven
A certain office lady is back!!
SCP: Ground Zero
Infiltrate a secret facility to recover an anomalous object.
Countersnipe
Multiplayer Seek and Snipe
Soviet Jump Game
Snag powerups, collect coins, and battle against 49 other comrades in this 2D sidescrolling free-for-all. Together, we are one--but will you be the one who is held above all others?
Fork Parker's Holiday Profit Hike
Against explosive firepower, bitter cold, and dizzying heights, Fork Parker must outwit a group of no-talent game developers in a deadly holiday promotional game. Also, it's free.
ATOMEGA
Grow, fight, collect and evade in the last cosmic arena the very end of time. Acquire MASS to evolve your EXOFORM from the nimble ATOM to the godlike OMEGA and compete for fun and dominance in a fast-paced, multiplayer shooter. ATOMEGA™ !
Dystopia
Dystopia is a cyberpunk game with tense combat situations in a high-tech world spanned by computer networks. Playing as either Punk mercenaries, or Corporate security forces, the player will fight through the physical world to gain access, via jack-in terminals, to cyberspace.
Omegalodon
Omegalodon is a third-person multiplayer action game where players compete by attacking/defending the city. The Red Team is comprised of police and soldiers armed with an array of military vehicles and explosive weaponry. The Green Team is comprised of Omegalodon, a 100-foot shark monster, and the Enviros, equipped with a healing beam.
Warplanes: WW2 Dogfight
Grab the control yoke of a warplane and jump into the battlefields of World War 2 in this thrilling combat flight action game. In each of the campaigns for USA, Great Britain, USSR, Germany and Japan you will assume the role of a pilot and squadron leader of an elite air force unit.
Gunscape
Gunscape provides easy-to-use tools based on a block-placement interface everybody's already familiar with to create all types of maps. Don't like building stuff? Then just blast your way through hordes of monsters or duel with other players!
Destination Sol
Pilot your ship in the seamless open world made of space, planets, and more. Find new ships and equipment, find allies and beat all the enemies in this open source space shooter!
FULFILLMENT
Exciting Adventure About the Joys of Working at an Amazin' Fulfillment Center! Short, social commentary game that is 100% free, no micro-transactions.