Top similar games like M.A.S.S. Builder:

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!

This is a single-player action game playable in both first-person and third-person perspectives. Players can choose to pilot a combat mech armed with guns and blades, slashing through disgusting cockroaches in post-apocalyptic ruins to eliminate regional threats.

Cyber Heart is a single-player, story-driven mech shooter where you, a commander, ride your customizable mech through an open world to fight against enemy AI machines.

Nimbus INFINITY is a high-speed mech action game, set in the future of a war-torn Earth that has just begun to heal. Equip mechanical Battle Frames with weapons to customize your battle style, and soar through variant battlefields while discovering the story of a new generation.

This game is a sci-fi action role-playing game From assembly to painting, you can greatly customize your character

Mechanic Action MMOTPS Project Rayssus Customize your own Rayssus and use your Weapons, actions, and skills to be active on the battlefield.

Become a pilot in the world of Mobile Suit Gundam SEED, for the first time available with English localization! Engage in thrilling, action-packed Gundam battles, complete missions, and tune up your newly acquired Mobile Suits!

Kanka is a sci-fi multiplayer Action RPG! Team up with your 'Kankas' (buddies) for intense Third-Person Shooter combat in a universe waiting to be explored. Early development - join our journey!

Glide, fly, and blast your way through Haven's facilities to discover the truth while facing friends and foes of your past along the way.

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.

PlatinumGames’ revolutionary sci-fi action shooter slide-boosts onto PC. Battle legions of future-tech enemies using a vast arsenal of weapons, including all DLC. Fully unlocked framerate and gorgeous HD resolutions up to 4K. The definitive way to play: war has accelerated.

Skylorn: Bound Together is a co-op open-world action RPG. You arrived from a distant colony and explore a post-apocalyptic sci-fi fantasy world, battle enemies, uncover mysteries—alone or with up to two friends. Expect roughly 5 action filled hours for a single playthrough.

Robots Arena Fight: SYSTEM ONLINE. Engage in metallic mayhem. Deploy BULL. Deploy WASP. Lasers, rockets, chaos. Target locked. Smash, blast, dominate. No rules—only steel, fire, and victory. Mission accepted. Combat initiated.

This is an action game in which the player builds and controls a giant robot. The game features ground crawling 3D maneuvers, customizable elements, picturesque characters, and scenarios. Even those who have never been good at action games will surely find that Vulture will respond to their needs.

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.

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.

Faster than anyone. Stronger than anyone. And more stunning. Customize your robot for “cyber battle racing” in a game that offers all the thrills of racing, battle, and customization. Online, Offline, Time-Attack... which mode will you dominate?!

A tense 20-minute battle, using firearms and skills to eliminate enemies. Upgrade and select MODs to enhance yourself, complete various battlefield missions to learn skills, and obtain weapon materials. Maintain rapid growth in abilities to survive in the game.

Break Free is a fast paced third person sci fi shooter game. The creatures that live among us have made the Earth uninhabitable for human life. You are mankind's best hope for survival. Make no mistake, war is coming and you shall die today, then you shall live to fight again tomorrow.

Become a future AI and delve into 3D bullet hell action in an advanced lab. Combine various modules, repeat combat training, enhance stats with research points, and earn achievements to develop your unique combat style. Enjoy overcoming waves of enemies and defeating bosses within time limits.

An action RPG shooter where you battle biomechanical monsters, evolve your soldier, and command a powerful companion as you fight to reclaim a planet reborn.

Dolls Nest is a 3D action game where you can customize mecha girls and explore a ruined world. As a Frame Unit, your adventure will pit you against the gigantic autonomous factory world of Hod. Overcome obstacles using the parts at your disposal and uncover the mysteries that lie at its center.

"AfterM.A.T.H. (Mobile Arsenal Tactical Hunter)" is a sci-fi action game where players pilot advanced mechs to combat the deadly Venomarch creatures. Engage in diverse missions including enemy elimination, hive destruction, new weapon testing, and giant boss battles in a post-apocalyptic world.

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.

A challenging solo extraction shooter set in a hostile sci-fi world. Play as Quinn, a Dark Matter harvester stranded on planet Viridan — surrounded by deadly robots, fearsome bosses, hostile wildlife, and corporate lies. Harvest. Fight. Escape.

Enter the abyss of RPGs. There’s nothing else like it—anywhere. That’s a promise. At first you’ll wonder, “What is this?” Keep going. You might recall a few familiar titles. And then it hits you: this is unlike any RPG you’ve ever played. The abyss of RPGs awaits.

Fast-paced mecha themed third person shooter.

Set in futuristic Tokyo, take control of the robotic community before they control everything!

EMPYREAN//YOU is a third-person mecha metroidvania with dynamic, agile combat and a unique lo-fi vector aesthetic. Fight angels, use their ichor to customize your mech, and explore an empty world damned by a true and benevolent God.

或许在某个时空里他已经战败了 但是在这里或许可以改写一切，传说最强的赏金猎人！ 那段未完的故事 将如何开始又如何结束...

Cyber Loop is a TPS roguelike shooter where you play as Alice, an enforcement robot suppressing a robot uprising in Sodom. Choose from 60+ weapons, face random monster combinations, and challenge epic bosses. Experience the thrilling heartbeat of machinery! Add to your Steam wishlist now.