Top similar games like Project Rayssus:

Pilot your fully customizable Arsenal mech and join your fellow mercenaries in defending humanity from the corrupted machines and gigantic robots in this post-apocalyptic action game!

STEEL HUNTERS is a Free-to-Play, PvPvE shooter with futuristic mech battles. Level up your Hunter and upgrade your arsenal to turn rivals into scrap. Choose your playstyle and combat tactics against 5 other duo teams. Only one can extract from the Hunting Grounds.

This is a free-to-play team battle action game based on the "Mobile Suit Gundam" series of the Universal Century. Whether by land or by space, lay waste to your foes using either your favorite Mobile Suit or roam the battlefield as infantry and capture important objectives.

ANIMO Stars Arena is a game that blends adorable animal pilots with ridiculously powerful mech juggernauts, in epic battles and evolving battlescapes that will keep you constantly rebuilding your loadouts and hangar of fully customized war machines!

A fast-paced TPS & FPS where you control a mech in battle. Customize 12 parts: head, torso, arms, legs, booster, FCS, and 6 weapons. Weapon and frame colors are changeable. Use weapons, jump, boost up, run on walls, do rapid boosts, quick turns, and high boosts.

LIGHTS OUT: TPP is a multiplayer third-person shooter, with hype visuals and soundtround. Play solo or with friends in multiplayer, level up, track your stats, and dominate the battlefield in this ultimate shooter experience!

Simultaneously control a sword-wielding robot and a gunslinging space frog in Shoulders of Giants, an explosively colourful sci-fi roguelike. Play alone, with a friend, or as part of a four-person team, cutting through waves of enemies on a quest to rescue the galaxy from the forces of Entropy!

A co-op shooter-RPG with a retro-3D aesthetic. Customize and upgrade your character as you take back the city of Vestige from demonic machines!

Immerse yourself in a dark, dystopian world that seamlessly blends angels, demons, firearms, swordsmanship, magic, formidable creatures, and advanced technology. Progress through diverse, ever-evolving storylines, embarking solo or with your allies. Take a break any time and try out the PvP arena.

Exoprimal is an online, team-based action game that pits humanity's cutting-edge exosuit technology against history's most ferocious beasts – dinosaurs.​​

Granvir: Zero Front is a 3rd person action roguelite mech-builder with co-op multiplayer. Experience the prelude to Granvir as the resistance response to the Millennium Company invasion. Pilot your Granvir, manage your campaign between battles to find the best equipment, and stay in the fight.

Take customization to the extreme with the Omega Customization System and battle with one-of-a-kind combat units in this all-new third-person shooter mecha game.

Gear up for tactical mech action in War Robots: Frontiers, a free-to-play multiplayer mech shooter. Construct and customize, squad up with Pilots online, and fire up your engines in massive intergalactic battles.

PHANTOM GALAXIES™ is an epic sci-fi adventure with thrilling mecha combat. Choose between four distinct Starfighter classes and diverse weapons and gear. Once enemies, the intergalactic empires of humanity band together to battle lawless pirate factions amid war torn space!

Join robot war games. Walking war robots battle games for free. Download now!

Shipwrecked on a uncharted island, master survival alone or with friends. Battle, build, and conquer foes as you confront the mysteries lurking in its shadows.

Commander, customize and build your Mechanical Assault Skeleton Suit (M.A.S.S.) and lead the fight against an alien invasion bent on exterminating the human race. The fate of humanity is in your hands.

SD Gundam Battle Alliance is a multiplayer Gundam action RPG where you can smash foes solo or with friends in thrilling mechanized combat. Acquire new mobile suits, power them up, and take them into battle in various missions!

Launch a counteroffensive to take back the Earth from alien invaders in this mecha action RPG.

Magical online action game with thrilling magical battles and resource hunting with deep character and spell customization.

NEUROXUS is a high-intensity sci-fi action shooter where overwhelming firepower, brutal boss battles, and precise movement decide survival. Awaken as Earth’s last war machine and fight through deadly defenses to destroy Nexis, the AI that wiped out humanity.

MachineClad is a mech customization action game where you build your own machine from a variety of weapons and parts. Boost to outflank enemies and strike through your lock-on sight—experience battles that are both weighty and exhilarating

Experience the Metaverse in Reality End, a VR multiplayer shooter. Play as a human or android, with various weapons and vehicles. Four maps in beta/alpha stages and five game modes including deathmatch and capture the flag. Voice chat, AI bots, and a VR hand pad with command buttons also included.

This multiplayer souls-inspired spell-casting game sees you collecting equipment and finding new spells to help on your journey of proving your worth to the gods, and redeeming yourself from the cardinal sin of mortality. Explore the floating island and unravel the secrets of the fragmented world.

"Attack of Steel" is a mecha battle game from a third-person perspective. When you pilot an advanced mecha to fight the enemy, you not only be familiar with all weapons, but also need to adapt to the skills of aerial combat and effectively destroy the limbs of the enemy mecha to win more easily.

EXTERMINATOR is a fast-paced, high-octane action third-person shooter inspired by Armored Core and Vanquish. Destroy hard bosses, obtain their armaments, modify armaments, annihilate hordes of robots, solve puzzles, learn new skills, try different builds, and customize your robot.

Hack and slash your way through the Tombs of Oasis. Extracting with your loot will require all the skill your team can muster as you mow down vicious monsters, face deadly traps and slaughter other players! Carefully craft your build and customize your character with unique items and skill trees.

Mech Wars is a real-time 6v6 multiplayer game. Build your robot army, customize with powerful weapons, and battle in Assault and Deathmatch modes. Capture enemy bases or destroy rivals using strategic tactics. Earn rewards and become the ultimate mech commander!

P.R.O.T.O.C.O.O.L. It is a multiplayer TPS game with fantastic and colorful graphics, developed by a small team. Fight across multiple game modes and ever-growing maps. Take to the Field, Fight and Survive!

Step into a dynamic Action RPG Arena Fighter set in a medieval fantasy realm. Create your champion, battle waves of enemies and level up with friends in solo or cooperative play. Earn gold for powerful gear and powerups!

Squad up in Mecha BREAK, a multiplayer third-person shooter offering three intense game modes filled with ground and aerial combat. Pilot your Striker into the breach and neutralize enemies. Are you ready for the ultimate showdown?

Swords and Shotguns is a Sandbox Survival MMORPG, combining elements of PvE and full loot PvP with intense real-time combat. Gather resources, craft power gear, and shape the player-driven economy. The entire world is a massive big server.

STAR BATTLE is a fast third-person shooter where you pilot super-deformed Mobile Suits in 4v4-8v8 battles. Boost, slash and shoot across land and space maps, collect and customize 400+ iconic units, and rise through ranked ladders based on pure skill.