Top similar games like Boss Breaker:

Star Fox meets Touhou in this action-packed sci-fi shoot 'em up, set to a rockin' synthwave soundtrack reminiscent of the Hotline Miami series. Pick one of five mech pilots and wield the eponymous HeartLinks to defend the Hydra Galaxy from the Omni invasion. Master yourself, master the machine.

Unleash mayhem in Battle Tracks, a top-down action-adventure game with strategy and puzzle elements. Confront waves of enemies, play with or challenge friends, explore six unique worlds, and earn stars to advance through uncharted territories.

Hexagonal Explods is a vertical shoot 'em up game where you need to defend the earth from aliens. Collect power ups, fight funny bosses and... well... SHOOT THEM UP!

Popular vertically scrolling shoot'em up game Shikhondo is back and powered up! One day, the soul-starved Youkai escape from the depths of hell. Now, the story of the Grim Reaper and the girl who has fallen into this land begins!

Crush, smash, and eat thousands of enemies showing humanity what the meaning of destruction is! Kaiju Catastrophe is an arcade game with roguelite mechanics. Mutate devastating weapons, unlock permanent evolutions, and wreak havoc with a variety of monsters to tear humanity apart!

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!

slither and shoot, but don't run out of space! cyber_serpent is an arcade twin-stick shooter combined with snake. compete for a global high score in this modern take on retro classics as you face infinite waves of polygonal enemies.

Blast aliens, collect upgrades, and survive long enough to make it out in this sci-fi mashup of "Asteroid" and "Vampire Survivors".

Jump from Node to Node while surviving the Chasers onslaught. Keep moving, Keep Upgrading, and don't get terminated.

Prepare for an interstellar showdown like no other in a gripping roguelike top-down twin-stick shooter set in the vast depths of space. Pilot your advanced starship, engaging in relentless battles against hordes of alien adversaries. Destroy, Collect, Upgrade, Die, Unlock, Repeat.

TRAXION is a cave flyer featuring beautiful pixel art, great music, and tons of meticulously crafted physics puzzles.

Bring It On! is a single-player auto-attacking 'monster'-hell shoot-em-up survival game. Take on MASSIVE hordes of monsters across several locations, earning experience points to level up and acquire new weapons and items, and unlocking lots of unique characters!

A tiny 2D Hand-drawn "Clean 'Em Up" game about a tadpole cleaning rivers and fighting pollution.

Cosmic Paradox: Noire is a 2D top-down shoot ‘em up adventure set in a world of two overlapping dimensions. Witness the battle between the Vex Accord and the Oronix Empire, increase your odds of survival with the right upgrades and choose a ship that is best suited to your playstyle.

Catch fish, earn gold and defeat the Sea Lords to escape the Island! A top down shooter with a fishing twist. With your trusty hook you will dash and swing in the ocean, throw bombs and fight your way out to victory.

Deadlocked: an adrenaline-packed Cartoon top-down shooter. Customize your loadout with unique weapons, unlock fun little pets, and upgrade your character. Master responsive gameplay and become a cutesy robot killing machine, There's one rule, Defy Deadlock

Follow Beto's adventure through the northeast of Brazil in this top-down adventure! Solve puzzles, battle to free animal spirits and finish quests to help a friend retrieve a valuable possession!

TETRAGUN is quadrant-based shooter where you're surrounded on all sides. You'll gain powerful upgrades as you progress, but so will your enemies.

A top down shooter where the only way to move and fight is with the recoil of your blunderbuss. Whirl through waves of garden-destroying pests to defend Bert's garden, strive to reach higher and higher scores and become the Top Gnome!

Embark on an epic Bullet Hell adventure in a fantasy world filled with bizarre monsters and eccentric magicians!

Embark on an epic adventure in this top-down action RPG! Take on the role of Ned, a disgruntled demon employee seeking to restore Hell's former glory. Confront your resistant manager, battle the 7 Sins and Satan, and make Hell great again in this thrilling demon-filled quest!

Top down 2D sci-fi space themed roguelike bullet hell shooter with different player classes and abilities to play with.

Frantic vertically scrolling arcade shoot'em up (shmup).

Destroy thousands of unearthly creatures and machines, and progress through the strange world you find yourself in. Chromatic Shift is a small rogue-lite game where you mix and match powerful colors to create your perfect build of abilities. Find your favorite combinations and become powerful!

Neon Invaders will take you back to your gaming roots with its constant action and relentlessly brutal enemies. Absorb enemy shots of the same colour to trigger a flurry of fire to decimate the alien invaders. Dodge and Match your way to victory through 40 levels and 5 difficulty settings.

Skyfighter Arcade is the classic top-down shoot-em-up vertical scroller, with a twist. Outmaneuver increasingly difficult enemies and obstacles. Blast your enemies out of the sky with powerful and unique weapons. Upgrade your weapons and ship to make yourself more powerful.

Embark on an action packed adventure! Elemental Adventure is a fast paced build-oriented ARPG. Featuring 8 distinct classes each with 12 unique skills, all with their own progression trees. Craft powerful gems to further customize endless possible combinations and face the ultimate challenge!

Manage your hive of nanobots in a Free-to-Play top-down arena shooter and exterminate all the bacteria and viruses infecting the body. Multiply the hive by absorbing bacteria to save people's lives as fast as possible while competing with others in order to become the fastest NanoHive Operator.

Prepare for an interstellar showdown like no other in a gripping roguelike top-down twin-stick shooter set in the vast depths of space. Pilot your advanced starship, engaging in relentless battles against hordes of alien adversaries. Destroy, Collect, Upgrade, Die, Unlock, Repeat.

Do you love money? You’re the newly appointed CEO of Vostok Inc. As a greedy, space-capitalist your ultimate goal is to make as much as you can.

In this unique top-down shooter with text adventure elements from the 1980s, take on the role of a time traveller seeking wealth and adventure across a number of different eras of time. Play with 1 or 2 players. Players can choose to work together, or against each other!

An unlikely hero ventures across a magical kingdom to defeat the monstrous Moon Menace and rescue the Star Sovereign.

A cozy time survival roguelite in space. You steer the shippy while the shooting happens automatically. Meet cute NPCs, solve small quests, and fight quirky enemies with satisfying weapons. A shorter experience for people who don't have much time but love playing (and finishing) games.

Dive into the world of the Fennyverse! Embark on an epic quest with KAOTIX, Dexter and Slade Fury as they face off against Old Whiplin. Traverse nine exhilarating levels, each brimming with distinctive bosses. Will you be the saviour of the Fennyverse?