Top similar games like Abyssal Swarm:

"Deep Space Survivor: Endless Starfield" is a survivor-style game. Your interstellar battleship accidentally enters an unknown universe, fighting its way through endless enemies, roaming multiple star systems, and collecting meteor resources to forge your ultimate orbital weapon.

Fast paced Top-down shooter! Smartly use IRCM to evade the constant barrage of bullets and missiles and destroy everything that stands in your way.

Join the race for Ether! Mercenary Battle Company: The Reapers is a fast-paced, roguelite, bullet heaven game in a sci-fi setting. Choose your pilots, customize and upgrade your Mecha Robots, and survive against endless swarms of Xeni. Will you survive long enough?

"Steel Knight's ARMIS" is a roguelike robot game. Lead the rebellion through five chapters, fighting against the Imperial Army and Earth Federation. Customize and upgrade your robot to survive the intense battles ahead.

Inspired by Vampire Survivor. you need to complete various tasks in the raging waves of monsters. During the mission process, you can choose appropriate enhancement options from 120+ unique non-numerical upgrade options to amplify the character's advantages or cover up the disadvantages.

Play as a robot vacuum in this Rogue-lite action shooter. Mow down through hordes of goons and enemies as you traverse through 12 stages, and 3 boss fights. Loot among many guns, spears, throwing stars and different powerups to choose your build.

A minimalist horde survival arena where you’re hunted by an endless swarm of drones - kite the horde, bait them into deadly traps, upgrade your defenses, use special items and survive as long as you can. Every minute the swarm grows denser, faster, and deadlier.

Wasteland sci-fi style light meat pigeon tank shooting game

「TouHou Koishi's Enchanted Woods」 is a Touhou fangame.This is a "reverse-construction" action rogue-lite.Koishi vs. Kokoro! But as the playable character, Koishi uses various enhancement cards to continuously strengthen Kokoro. Can she ultimately defeat the Kokoro she has built up herself?

Aim. Dodge. Survive. Battle through a sci-fi hell in this intense Twin-Stick Roguelite Shooter. Survive the endless swarm for 10 minutes, defeat the level boss, or die trying. Draft powerful synergies in every run and purchase permanent upgrades to outlast the extinction.

lone.AI is a space RPG roguelite. With challenging, relentless gameplay, each run has the potential to boost your ship's power, speed, and more. As a lone AI, fight your way through the solar system and uncover the secret behind the ZOSMA, an alien race that holds power over the system.

This is a bullet screen shooting role-playing game, where players can freely match their decks and have a thrilling battle!

A survivor game with missions - not just survival. Rescue astronauts, repair reactors, and hack terminals - while surrounded by hundreds of enemies. Every run is a chaotic, ten-minute showdown.

S.R.A Project is a challenging roguelike bullet hell wave survival game. Face cosmic creatures, improve through skill and perseverance, and master a world that rewards learning and adaptation.

Pilot mechs as you slaughter hordes of a diverse cast of alien quacks in this survival roguelike. Build your arsenal from a variety of mechs, power ups and items to survive in ever-changing scenarios.

Echo Punk is a roguelite top-down looter shooter with fast-paced combat, tactical upgrades, and endless replayability. Blast through waves of enemies, collect resources, and upgrade your build -- or die trying.

You are a friendly-but-deadly Mech on a journey searching for your missing pilot in this action-packed roguelite shooter. Choose your missions and rewards, research skills, equip expansions, mod your weapons, install plugins, customize your looks and stylishly cut your way through hordes of evil AI.

Beyond Lost Planets is an intense Roguelike Dungeon Crawler Bullet Hell. Fight through enemies and bosses across procedural worlds. Everything from weapons and bullets to powerup and companions is represented with cards. Grow absurdly powerful and create wild, unique synergies every run!

Prologue version of the game Gatekeeper. Gatekeeper: Infinity is a fast-paced rogue-lite shooter where you'll search for the stolen Heart of the Universe and battle machine enemies! Play solo or join forces with friends in co-op mode.

A 2.5D Abstract Sci-Fi top-down shooter about decimating germs on a petri dish. Fill the screen with lasers to decimate hundreds of duplicating germs. Upgrade your cannon, manipulate the germ's characteristics, uncover the mystery of this bacteria, and fight the ultimate supergerm.

Robot Arena Survivors is a single-player arena auto-shooter where you're fighting against waves of hostile robots using a powerful arsenal made of hover tank units. Customize your own set of abilities and dismantle your enemies to claim your fame into the leaderboards.

Pilot disposable combat drones through the Primal Portal in a sci-fi action roguelike. Customize your drone, fight through various missions, recover research data and alien technology to enhance your drone setup for the next session.

《机械幸存者》这是一款将Roguelike与Rockman EXE类特点融合的弹幕射击类游戏。

Wreak havoc on countless foes with mighty weapons and deadly spells! Enhance your skills and face even greater dangers! Army of Ruin is an auto-shooter where you become the Bullet Hell.

Rocket Rats is a survivors-like game where you defeat cheese-based astral bodies in space – as a rat! Clear waves of enemies, collect cheese, upgrade your gear, and conquer the moon!

Drive tanks & robots in a roguelike bullet-heaven, playable top-down or third-person. Survive 15 waves of chaos—drift, shoot, smash, and unleash physics-powered mayhem with customizable builds.

Control a rusted mech in a fast-paced top-down survival action game. Enter unknown areas, dodge enemy swarms, choose random weapons, skill upgrades, and passive modules, defeat bosses, unlock maps, and break through on the edge of overload.

Tarantula Virus is a randomly generated roguelike topdownshooter in a sci-fi style with a lot of items and enemies. Upgrade items unlock new characters find allies and defeat powerful enemies and bosses.

Collect synergizing items to create an overpowered character to fight hordes of cyclops monsters. Cyclo Chambers is a fast-paced, top-down arena shooter with light rogue-like elements. 150 items to choose from to create frantic combinations. Different runs every time.

Astragene is a roguelite shooter where you will have to survive each level facing hordes of aliens. Improve your abilities, choose new upgrades, and create reactions by generating combinations of powerful elements. Each game will be different, will you be able to adapt?

This is a single-player survivor-like auto-shooter. Fight against fleets of spacecraft, gather resources, research technologies, unlock upgrades, and create devastating builds using modern arsenal.

Boom Buddies is a fixed-position bullet hell survival game where animal heroes face endless enemy waves, upgrade weapons through card choices, unlock new characters, and compete on global leaderboards.