Top similar games like Alien Swarm: Reactive Drop:

A highly modifiable top-down shooter featuring highscore-driven singleplayer challenges and online-multiplayer competition. You get arenas, racetracks, mini-games and various online-multiplayer modes. Plus powerful modding-tools to create your own levels and game-modes.

SYNTHETIK 2 is a bold continuation of SYNTHETIK: Legion Rising. Fight a world overrun by the relentless Machine Legion. Experience the next level in gun-play and upgrade yourself beyond measure to rival their Gods. Can you defeat the Heart of Armageddon?

A masterful combination of top-down shooter and endless replayability with procedural levels. Blast your way through walls & enemies with guns and cybernetic abilities. Install perks from cyber chambers and upgrade your character stats after each death. Can you stop the Overseer?

Projectile Arena is a 2d shooter multiplayer game. Play various game modes from the default mod list or create your own mods & invite your friend over to play with you.

Surviving is only half the game. The award-winning atmosphere and gameplay mechanics of the original Shadowgrounds make a triumphant return in this spin off/sequel armed with a slick new feature set! Shadowgrounds Survivor tells the story of the last remaining humans on Jupiter's moon Ganymede, where the alien onslaught is in full force.

Atomine is a twin stick procedural shooter rogue-lite set in a virtual world with minimalist design, where the player recounts on the screen the real events of STUXNET, the first weapon ever created in the form of computer virus.

The Last Sunshine: Rekindled is an abstract shmup and rogue-lite hybrid. Level up your stars, earn a variety of skills, then mix and match them with your customized stats to dispatch droves of dark, aggressive enemies. Will light win against the darkness? It's the end of the universe!

The Desolation brings a complete cross-platform co-op looter-shooter experience to PC and mobile devices. Make your impact across endless procedurally generated worlds via cooperative action combat, deep build customization and richly satisfying tactical gameplay.

A fantasy gladiator strategy RPG with vibrant characters, funny random events, team management mechanics, and emergent relationship-building. Uncover a sinister conspiracy; fight deep turn-based tactical battles; watch your characters grow together!

¡Fight the heroes trying to conquer your dungeon! Choose a class and fight along your comrades to stop invaders, level up, pick up loot, buy upgrades and become the greatest anti-hero

WarSphere is a fast-paced, roguelike top-down shooter. As a spherical death robot, you blast, dash and loot your way through procedurally generated worlds. It's all about the pew pew.

High Velocity Arena is a refreshing take on the top-down shooter genre, boasting surprisingly nuanced yet satisfyingly snappy movement and gunplay. Pick between five classes, dozens of loadouts, and slide into 5v5 battles to dominate your opponents in Payload, KOTH, Attack-Defense, and more.

An easy to get into fully moddable First Person Shooter with advanced movement mechanics. Fully Customizable with Mods, Custom Maps and Thousands of Items to Unlock.

NetGunner delivers intense multiplayer competition in the style of a twin-stick shooter, with a theme based around computer hacking. Players have access to multiple types of weapons to damage and throw opponents around the map. The last surviving player wins the round.

Saucers is a rogue-lite top-down twin-stick arena style shooter featuring extensive weaponry and upgrade paths so that every run is unique. The further you get, the more weaponry you can stack up to devastating effect. THIS GAME REQUIRES A TWIN STICK GAME CONTROLLER TO PLAY.

Steinstern is a space action twin-stick shooter. Find your way through a variety of procedurally generated space mazes. Test your skills and your luck with many different weapons and configuration possibilities! Play alone in single player or in local coop mode with dynamic split-screen.

Destroy arena vermin, level up, choose your class path, get loot, and slay other players. Destroy the bosses of the arena without being slain, and perhaps your ascent into arena God-hood will be recorded into legend!

Zap, blast, loot, repeat in this procedurally generated twin-stick arcade-shooter. Fight aliens, fight robots, fight anything that moves and a few that don't. Then loot them all.

Xeno Crisis is an arena shooter in which up to two players take control of battle-hardened marines embarking on a deadly mission to confront an alien menace! Run and gun your way through thousands of adversaries, searching for survivors, and ultimately facing the origin of the outpost's demise.

In this colorful twin-stick shooter inspired by 2000's-era Flash games, survive several waves of uniquely deadly enemies with your wits and skill. Choose wisely from a tree of upgrades after each wave to refine your strategy and bring down your foes. Live to see what lies at the end of the horde.

3D Sci-Fi arcade Shoot'em up game. Destroy asteroids and aliens. Shoot them all!3D arena shooter with multiple worlds. Spaceship simulator and shmup arcade style game.

Set in a post-apocalyptic future, The Signal State puts your logic skills to the test with complex puzzles inspired by modular synthesizers. Repair machines, rebuild an abandoned farm, and be part of a revolution that will change the fate of agriculture once and for all.

Not everyone on the planet Driftland is happy with the new order brought by the mages-rulers. Is this nothing more than an attempt to restore the apparent balance that has almost destroyed the entire planet once? Join the brave Nomads and fight for freedom on your own terms.

Loopbreaker is a class-based, third-person, action roguelike in which you can go it alone or team up with friends to battle back against the alien invasion by collecting powerful items and outpacing the onslaught.

HELLFRONT is an intense top-down shooter. Conquer ground, build a base, and command your troops in battle! Play PvP or beat the campaign co-op or solo.