Top similar games like MUTARIUM: Mutant Aquarium Defense:

Fishing Mega-Game takes the joy of a fishing mini-game and crafts it into a larger creature collecting experience. Roam the land for new fishing spots and deploy your favorite fish in search for new playable fish!

Just King is an action auto-battler with roguelike elements. Assemble your party to venture into different lands fighting fearsome kings and their deadly armies. Use your loot to hire and upgrade mighty heroes... or the bard.

Three teenagers are transported to a cursed Halloween dimension. Use powers based on their costumes, face hordes of monsters, create powerful builds, and find the portal to return home in this frantic action roguelike.

The Ocean Ecosystem Roguelite. Grow a colorful school of fish with unique abilities and unlock powerful items to help them repel boss invasions. Collect rare fish to complete your peaceful Virtual Tank. Hold the line and surface victorious! The depth is deceiving.

Merge, build, and defend in a brutal roguelike tower defense. Survive endless waves of monsters, evolve unique towers, outsmart epic bosses, and craft unstoppable builds in every run.

"Duck Dash" is a top-down arena shooter roguelite game. Players take on the role of a little duck and embark on a journey of growth, strategically selecting optimal skill combinations to become a mighty warrior.

Fend off hordes of enemies in this arcade tower defense roguelite with autobattler elements. Build up a team of powerful synergies and become unstoppable.

Loopquarium is an aquarium roguelite where you assemble a school of fish with unique abilities to repel invading apex predators. Start with a group of guppies, grow your population, and balance predator and prey to discover insane combos every run.

A cute and chaotic survivors-like action game set in the world of Donna! Play as lovable characters, combine wild abilities, defeat bosses, and survive hordes of enemies across 8 unique maps.

Summon hordes of minions to defend your realm against invading heroes in this fast-paced fantasy strategy game. Unlock permanent upgrades, new levels and more advanced minions to survive the ever-growing threat.

Afloat is a RPG dodging game with Rouge-like elements where moving fast means staying alive! Sail on your trusty ice float, dodge quirky sea creatures, grab upgrades that shape your playstyle, meet charming travelers & unlock new playable characters and game modes as you sail toward warmer horizons.

Fugue Shot is the Arcade Roguelike - each run, you’ll jump between multiple game modes manifested as surreal dreams. Choose your path, adapt your playstyle, and collect Memories to create game-breaking builds and change how each mode plays. Can you escape this ever-shifting dream?

AutoBlobber is a Roguelike Autobattler where you customize your Blob to survive endless waves of enemies. Strategically place upgrades, forge powerful synergies, and adapt your build between waves to push your run as far as possible.

Hop on a skateboard and casually save the world! Simple controls—just move up or down the lanes. Horizontal movement and attacks are all auto!

Gem beasts is a creature collector, roguelike. Fight and collect other creatures to play as, manage your inventory and explore different build combinations.

Bonk the Goblins! is Whackamole meets microgames! It's full of hectic and funny score attack arcade action.

Sidequest Survivors is a bullet-heaven roguelite where you control wacky characters, mow down waves of magical creatures, and tackle sidequests. Choose from a variety of weapons and create builds that match your playstyle.

Fast-paced auto-battler. Fight, capture and upgrade Automons, build a diverse party, battle bad Bosses and become the Automon Champion!

Battle through the Nine Realms in this Norse-themed roguelite, blending survivor and twin-stick action. Slay hordes, collect runes, upgrade abilities, and ascend as Odin’s chosen champion.

A cozy-dark creature-collection roguelite deckbuilder. Tame Spirelings, fuse their moves into a living deck, and climb a Spire that rebuilds itself every run. Evolve your team, master five clashing elements, and push your luck through endless Ascensions.

Demondemon Demon Tamer combines swarm-survivor and monster raising. Manage, take care, and train your demons during the day. Survive the swarm of attacking demons at night. Raise your reputation among three factions of demon tamers, and unravel their hidden motives in this doomed city, Laknakarta.

Deckzin is a dungeon crawler deckbuilder with roguelike and RPG elements. Play as fantastic heroes, build and refine legendary decks, adapt to encounters and events in fast-paced runs, defeat powerful bosses, and keep the world’s last light alive.

An incremental run-based game, where kicking ducks is key to your survival! Pick a robot, work your way through the upgrade tree, play the claw machine and slots, destroy evil ducks and make it to phase 10 of the experiment!

A Shrimp Based Bullet Heaven. Kill creatures, Level up & pick from 3 upgrades to unalive thousands more.

Drop Loot is a loot-matching, synergy-chaining, monster-exploding… roguelite dungeon crawler. Match tiles to deal damage and heal, stack powers to create chain reactions, descend to the heart of the well and paint it all red.

Turn a handful of heroes into a massive legion! Legionbound is a casual retro RPG autobattler where you recruit heroes, discover class synergies, forge powerful Ascensions, and battle through hordes of enemies across replayable roguelite runs.

Astra: Guardian of Stars is a cute pixel-art party-building roguelike where you gather companions, build a party, and combine attribute and class synergies to survive enemy waves. Your allies fight automatically while you move, choose items and augments, and shape a different build each run.

Serpent Squad is a bullet‑hell roguelike game where you control a snake‑shaped squad of heroes that automatically attacks nearby enemies. Combine different heroes to unlock class bonuses and create unique builds, guiding your unstoppable squad as it sweeps through endless waves of enemies.

Level up multitasking with digital pets on your screen. Immerse in auto-battles, fuse moves for unique tactics, and care for virtual pets while leveling them up. This unique creature collection auto-battler plays as an overlay – your perfect companion for work and entertainment!

Outlast wave after wave to grow unstoppable. Slimes Arena is a fast-paced arena shooter roguelite where each slime’s unique abilities combine with a wide variety of power-ups. No two runs are ever the same as you bounce to survive.

In this tactical rogue-like auto battler, you'll build your unique team of robots and keep them alive as they fight. Battle through waves of enemies as you travel from planet to planet on a mission to fix the sun. Strategize, protect, survive. A Mechanibot's wrench never rests.

Lone Warrior is a fast-paced action roguelite about 1-on-1 reaction battles. Dodge enemy attacks, strike in short openings and spend the gold you keep after death to unlock new spells, stats and items.

The Element Of is an element bending roguelite dungeon crawler set in a strange fantasy world. Choose from a variety of elements all with their unique playstyles to fight through floors of enemies and gain rewards that make you and your element stronger.

Annihilate alien armies, craft devastating builds and traverse hostile biomes in this fast-paced action roguelite! Choose from a roster of vengeful combat bots, each with unique strengths and abilities, and survive relentless alien hordes as you avenge the fall of humanity.

A auto battle reverse bullet hell. In Slay The Hero you choose your units and then send them out against the hero to destroy them. A variety of units will be at your disposal to slay the hero.