Top similar games like ProtoGalaxy:

With the completion of the third title in the RIP series, the RIP games have become an instant classic in the arcade-shooter genre. RIP — Trilogy brings all three RIP titles into one exciting and heart-pounding pack.RIPNot afraid of Death? What if he is accompanied by Halloween and Rock-N-Roll?

A fast paced multiplayer shooter that pits aliens against humans in a strategic and action-packed struggle for survival!

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.

Shatter is a retro-inspired brick-breaking game that merges familiar action with unique twists and a modern crafted production approach.

A rock-solid combination of rock-rolling action, deep strategy, and captivating art and music from different ages of history, this is a game of crush or be crushed!

Now with cross-platform multiplayer! PC vs. Mac at last.

Iron Grip: Warlord invigorates tower defense with first-person shooter elements to give a new twist to the genre.It puts you in the heat of the battle, fighting off hordes of AI-controlled invaders. Play alone or with friends, in a diverse and challenging struggle to save all of Atelia.

Experience your music collection like never before with this intense music driven arcade shooter. Each of your songs will have its own unique ebb and flow based on the music.

Using Critter Crunch's 'Food Chain' mechanic, players will eat their way through a smorgasbord of levels and gorge on a feast of modes, including Co-op and Versus multiplayer.

YOU ARE THE DRAGON in this award-winning arcade strategy game. Burn villages, collect gold, and level up your dragon while playing 10 minute matches in single player or up to 4 player co-op and competitive modes. Over 30 levels and multiple game modes ensure you'll be burning for a long time!

Monday Night Combat is a class-based, third-person shooter… and the most popular lethal sport of the future!

Frantic, multiplayer action involving Nazis and dinosaurs! What are you waiting for? This is World War II as it should have been!

The life of an independent mercenary is rarely without excitement. Your spacecraft awaits and your adventure begins in the Sapphire star system.

You think Tower Defense games are all about building? You thought wrong. Sanctum is not your average Tower Defense title. When the havoc starts, you get to join the fray! As one of the world’s first First Person Shooter - Tower Defense games, Sanctum has taken the best of both worlds to deliver an epic, one-of-a-kind experience.

In a dark Cyberpunk world, you (and up to 3 friends) wage war against the all-powerful Federation in this Source-powered FPS/RPG.

Reload for more shooting action with GundeadliGne, the 2nd title in the Gundemonium Collection

Jamestown: Legend Of The Lost Colony is a neo-classical top-down shooter for up to 4 players, set on 17th-century British Colonial Mars. It features all the intensity, depth, and lovingly handcrafted pixels of a classic arcade shooter, with a modern twist: deeply-integrated cooperative gameplay.

Slice them, burn them, skewer them, and launch them - no matter how you get it done, orcs must die in this fantasy action-strategy game from Robot Entertainment. As a powerful War Mage with dozens of deadly weapons, spells, and traps at your fingertips, defend twenty-four fortresses from a rampaging mob of beastly enemies, including...

When the Empire begins its reign of destruction in a thirst for natural resources, it’s up to Max Brawley, a retired Gatling Gear pilot, to stop them.

Work together to survive the devastating Dinosaur horde in huge, endless environments.

You got a problem? Yo, she’ll splode it. At the Big Science after-party celebrating the capture of Splosion Man, a spill of champagne shorts out the safety protocols on the splosionatrix and from it emerges Ms. Splosion Man. The latest creation from Twisted Pixel Games, the creators of Splosion Man, The Maw, and Comic Jumper, Ms.

Pick up the Horror Pack for free during the Steam Halloween Sale! Offer ends November 1st at 10AM Pacific.

Monaco: What's Yours Is Mine is a single player or co-op heist game. Assemble a crack team of thieves, case the joint, and pull off the perfect heist.

Mayan prophecy foretells the beginning of a new world age on December 21, 2012. Can the four heroes save humanity by defeating these evil foes?

Use your power, show your might! Play this Multiplayer Online Battle Arena (MOBA) game for FREE now! AWESOMENAUTS combines 2D platforming with team-based strategy and hero based action. Whether you are a new recruit or an intergalactic legend, play AWESOMENAUTS!

In this Insanely Twisted, 2-D action-adventure game, explore unique environments and battle bizarre creatures.

Cut-throat multiplayer running game that pits 4 players against each other, locally and/or online. Run, jump, swing around, and use devious weapons and pick-ups to knock opponents off-screen! One of the most competitive games you'll ever play.

Hack your way through brain scrambling puzzles while maneuvering through a thumb cramping maze of enemies.

Assemble your crew, take to the skies in the premier PvP airship combat game. Guns of Icarus Online is all about flying massive airships, shooting big turret weapons, and working as a team for supremacy of the skies. Everyone as one, victory or death, together.