Top similar games like Proto Trigger:

Astro Fighters is a tough old school vertical scrolling bullet hell shooter designed to test your skills with non-stop arcade style action. Fight against large bosses at the end of every level and compete for the high score across 4 difficulty modes to be the best fighter pilot in the game.

Sagittarius is a classic side scrolling space shoot'em up in a modern take. In this epic space game it's up to you to save our solar system from destruction. Fly alone or with a friend in a local multiplayer co-op game.

Star Jet Alpha is a top-down space shooter inspired by classic arcade games. Progress through each stage by blowing up enemy space stations while avoiding or destroying enemy missiles, space mines and asteroids. Unlock Star Jet capabilities by completing stages.

Engage in an intense space shooter that you can play in single-player or multiplayer with up to 6 players. Play a variety of different spaceships, each with their own unique stats, components, and playstyles!

Earth Space Defenders is a starship twin-stick real-time shooter action game. Experience story of menacing green smoke that plagues whole universe. Supports steam multiplayer and party play with multiple controllers.

Enter the cockpit of your spaceship and prevent the destruction of our homeland! You and your friends have to dodge various attacks and fight many enemies. But your Twitch chat can support you in your defense and your subscribers can even accompany you as wingmen!

Crisis Wing is 90's style vertically scrolling arcade shooter. Master 7 intense vertical stages, and take down massive bosses. Play solo or with a friend in local co-op. Get ready for pure, high-octane action.

How long can you survive the depths of space in this fresh revival of the classic arcade shooter, all while grooving to an original score by Megan McDuffee. Pilot solo or recruit a friend for local co-op across 30 unique challenges or the endless arcade mode.

Choose your ship and command it against an army pitted against you in this wave-based arcade-style bullet hell space shooter. Fight for as long as you can with powerups acquired through the catalog, and blast through everything in your path.

Chaotic boss-rush, bullet-hell-y, twin-stick arena shooter mayhem! Dynamically changing arena forces you to be vigilant: Watch the bullets, watch the walls!

ATOMIC GUARDIANS is a fully CO-OP arcade retro shoot 'em up, where one player flies the ship, and the other player mans the shields. Fight your way through a never ending horde of Brutal Bosses, Alien Monsters and Gigantic Asteroids as you rack up a new world-wide high score. Play with up to three friends, and see how long you can last!

The sequel to Toaplan’s shoot ‘em up masterpiece Truxton is a thrilling insane space action with an unforgiving difficulty level. Enjoy the visually stunning pixel graphics and vibrant music as you dodge the high-speed bullet rain and take on tough bosses.

Metis One is an action-packed co-op top down shooter in the design style of the arcade classics. Take command of the A6-Gravitus to defend the people of Jupiter Colony, Metis One, against an unrelenting alien onslaught. With Drop-In Co-op, Player Two can join the action at anytime!

A science fiction-themed vertically scrolling shoot 'em up game known for its stunning detailed pixel art, gigantic bosses, and a menacing difficulty. From the legendary studio Toaplan, this is quite possibly the most rock and roll shooting game of all time.

Play solo or with your friends in this fast-paced space shooter. Pilot multiple ships at the same time while taking on waves of enemies, finding power-ups, and gaining additional episodes along the way. Who will make it to the top of the leaderboard?

A retro twin-stick bullet-hell where you fight hordes of enemies, collect powerful weapons and upgrades, and go head to head with menacing mechanical bosses. Take on the hordes solo or with a friend in local co-op!

The Guardians, a secret society wielding the power of the Force, have readied their tanks and intend on crushing the aspirations of the Hammerbolt Empire!

Defend a Terraforming station against hordes of enemies in this short coop-only rail-shooter! A unique mix of nostalgic arcade elements and modern coop shooter gameplay. Triumph against your foes and compete for the top of the leaderboard!

Layer Section, the home console port of arcade game RayForce is back with new features and online ranking. Use the new lock-on laser function to defeat multiple enemies at once for a higher score in this gorgeous 2D vertical shooting game!

Rock 'N Roll G.E.O.S. Wars is a completely new dimension of the original Rock 'N Roll game. In this game, players can work together to vanquish the space rocks that threaten Earth... or they can choose to face each other in a wide variety of duel modes!

A distant human colony faces an enigmatic alien threat. As commander of a spherical battle droid, infiltrate alien spacecraft to neutralize the menace from within. Face AI-enhanced droids, upgrade your arsenal, and engage in high-speed action, mini-games and test your strategic skills and reflexes.

A PIONEER OF THE BULLET HELL GENRE BY TOAPLAN IS BACK!

Use Aileron Rolling or Evading your enemies' attacks while having a realistic damage system. Use different planes with upgradable parts and numerous weapons you can mount to your planes to destroy your enemies. Fly solo or play with your friends and enjoy local coop. A modern re-invented classic.

Arise Wyver and fly against overwhelming odds in this modern labor of love tribute to classic shoot'em ups!

Thunderbird is a classic arcade-style STG. You will be the pilot of the space fighter, stepping onto the space stage, engaged in a war between many forces. Fly a fighter jet, experience the speed of a shot under fire, or learn the truth behind war.

Banshee Bash is a local-multiplayer party game. Fight with up to 3 friends (or add bots) to battle as a team, or in an epic free-for-all. Collect mana and learn spells to cast your way to victory! Games are quick, and will allow you to level up for unlockable cosmetics to add some flair!

YOU ARE LOST IN SPACE! ALL WEAPONS ARE DOWN! Survive by ramming your ship into meteors and hostile forces.

Poly-Vinyl Pests! takes place many years in the future, where humans are long gone but plastics still litter the earth. Play as two ants from rival colonies in this twin-stick shooter to both squash plastic-laden pests and to prove the superiority of your colony!

Frenetic 2D action in the style of Space Invaders! Customize your spaceship, face hordes of enemies, and challenge yourself in multiple modes, including Campaign, Arcade, Invasion, and Survival. Upgrade your ship, collect power-ups, and face unique challenges in every battle.

Neon Fighter is a tiny arcade game packed with lasers and explosions, in which every few seconds you are forced to switch weapons automatically, making you have to adapt quickly to the new situation and re-evaluate your perspective.

Dodge and shoot your way through waves of enemies. REVO is a high speed, neon drenched space shoot ‘em up inspired by arcade classics of the 1980’s. Collect pickups, unlock powerful, ammo hungry weapons, and defeat giant bosses.

An arcade arena top down shooter. fast paced action with a great sound-track. shoot your way through the approaching enemy shapes, upgrade your character and beat the high score.

Talented and ferocious weapon experts needed to eliminate a dangerous mechanical menace that threatens the existence of humanity. Up to six positions available. Benefits include traveling the world to eliminate robots.

Stellar Space is a new take on a classic arcade game with a modern, rogue-like, form for new players to enjoy!

KosmoSquad is a twin-stick arena shooter where you survive as long as you can against an ever-increasing hoard of enemies. Fight alone or with up to three friends and collect star multipliers to maximize your high score. Use your score points to purchase upgrades for your ship and try again!