Top similar games like CALYPSO:

Not being actively developed anymore. Naki is a fast-paced survival shooter set in a vibrant, anime-inspired world overrun by rogue machines. Scavenge, trade, craft, and fight your way through dangerous zones as you uncover the secrets behind the mechanical uprising.

Join a legendary crew of Space Pirates. Hone your skills and liberate sectors from a tyrannical, expansionist empire. Acquire loot, enhance gear, build sets, and upgrade powerful weapons.

Dissonance is a Co-Op PVE Looter Shooter that can be played by you and up to 5 friends! The merging of two planets changed the world and it is up to you to defeat new foes in your chosen Dissonant suits! Collect loot, explore dungeons, find your past and close intense storm breaches!

Use guns to combine elements in surprising ways to unleash powerful reactions. Loot artifacts and guns to build the most unique and godlike builds. Go solo or with your friends up to 4 players.

Exoborne is an open-world, tactical extraction shooter set in a world torn apart by extreme forces of nature. Customize powerful exo-rigs to gain strategic advantage in ever-changing weather conditions. Face hostile factions, enemy players, and Mother Nature herself in intense high-stakes sessions.

Flayl is a Extraction MMO that delivers epic dynamic fights with comedic relief & personality. Setup gear, deploy, then fight up to 200 other players & Kovaak's mutated wildlife, deadly storms & hostile factions using guns, melee weapons, skills/abilities, & physics. Trade, Harvest, & Slay.

Start to play in the open world to master the game! For another day is a new world that need to be discovered from scratch by you.

REMNANT II® pits survivors of humanity against new deadly creatures and god-like bosses across terrifying worlds. Play solo or co-op with two other friends to explore the depths of the unknown to stop an evil from destroying reality itself.

Survive a relentless ocean with no land in sight. Build your ship, risk everything in full-loot PvP, and carve your path in a player-driven world.

Loopbreaker is a class-based, third-person, action roguelike in which you can go it alone or team up with friends to battle back against the alien invasion by collecting powerful items and outpacing the onslaught.

An action-adventure game based around a moose or wolf rescuing a lost friend from a hydra and kraken. Shoot magic at the mythicals and take them out as you explore the forests of an abandoned Earth. Defeat the Kraken and Hydra to win the day.

Corefall is a hardcore multiplayer survival FPS with a focus on competitive gunplay and base building. Kill, loot, survive.

Crossout - the postapocalyptic MMO action game where you can create a unique design for an armoured vehicle from dozens of parts and then drive it into multiplayer battles raging on land and in the skies alike.

The Overlord demands you Conquer the Universe! Grab your friends in a 1-4 co-op roguelite shooter and deploy as grappling robot Drudges. Battle the alien swarms, complete missions and destroy the Cosmos! Stack outrageous upgrades to build the Ultimate Drudges or delve deeper into the Universe!

Gravebound is a 6-player co-op extraction shooter set in a post-apocalyptic world overrun by rogue machines. Scavenge valuable loot, survive intense firefights, complete dynamic objectives, and extract alive to keep what you earn. Push deeper for rarer rewards, tougher enemies, and higher stakes.

Age of Water is an online adventure game set on a post-apocalyptic Earth completely covered in water. Sail through storms, fight and trade, capture other people's boats or build your own, extract resources from the bottom of the ocean and reveal the secrets of the Age of Water world.

A third-person shooter set in a crumbling megastructure. Fight drones, explore its sectors, and survive in a system that has spiraled out of control.

Varial is a single player skateboarding-action game where you play as the titular character fighting a giant robot called the "Y.2.K.A.I.J.U.". The game takes place in a Y2K apocalypse, where all the technology has revolted against humanity and wiped out most of the population.

Jump into this free‑to‑play looter‑shooter RPG featuring tactical combat, deep progression, and an exclusive canon storyline, playable solo or with friends.

Fight through relentless waves of zombies in this action-packed top-down shooter! Collect weapon parts, craft insane custom guns, and unleash devastating synergies to survive as long as you can.

Embark on high-stakes heists in Bankster, a multiplayer strategy game. Outwit undercover feds, plan and execute heists, and escape with the loot. Customize vaults, face NPC police, and experience intense, tactical gameplay in dynamic environments. Beware—one of you might be a saboteur!

Your friends are bagging over $15M in cash, but you’re here to ruin the score. Sabotage their heist at any cost while surviving lethal random events.

Kanka is a 1–4 player co-op sci-fi action RPG / third-person shooter. Complete dangerous missions on SP-01, fight hostile factions, explore dangerous regions, craft key tools, progress your character, and work together to find a way home.

The world is against you in this brutal third-person survival experience, and your only goal is survival at any cost. Loot, build, scavenge and craft your way to survive against the world and everything within.

Embark on a PvE survival adventure in the Age of Piracy. Fight on land and sea, solo or with friends. Build, craft and explore vast open world filled with dark secrets. Master soulslite combat and take on challenging bosses, command your ship and plunder unspoken treasures!

A multiplayer open-world survival game where you gather resources, craft weapons, build shelters, and battle the infected while struggling to stay alive.

Rise with Aion — ignite the rebellion, slay the foes, rally your allies, and unmask Terminull’s deepest, most dangerous secrets before they can rewrite our world.