Top similar games like PROTOCOL: Zero-day:

Tavern & Tombs is an action roguelite looter set in a dark fantasy world. Explore procedural dungeons, blast hordes of monsters with powerful magic, and collect epic loot. Return to your tavern to brew potions and spend essence on permanent upgrades before your next run into the crypts!

In a not-so-distant future taken over by companies and technology, a Cyborg and an AI fight together to save mankind from nanoviruses. Play alone or as a team of 4 players in this Post-Cyberpunk Action Roguelike Dungeon Crawler!

Step into an exciting journey in Cats Guns & Robots, a rogue-like action game where you are the last hope for the world. In this outlaw-like action game, surviving enemy attacks in each room will require careful choices of upgrading your character abilities and features of weapons in your inventory.

Wield Slasher’s sword in high-octane bullet hell roguelite action. Enter the trial for the cure to a deadly virus in the hostile microcosm of Deflector. Dodge and repel enemy projectiles, evolve with collected DNA and cut down all opposition.

Medievalien is a story-rich action rogue-like where a fantasy Medieval world has been invaded by Alien creatures. Use multiple characters, gather loot and manage your equipment to overcome ever harder challenges and unravel Medievalien's story and its secrets.

Isometric Mech Action RPG Survival game. Customize your mech. Unlock new parts and ultimate weapon evolutions. Create endless builds with the unique RPG stat system. And much more!

Enemies are your best weapon in this challenging hack-n-slash survivor! Slash and throw probes at bio-engineered foes, while meeting quirky characters and wielding elemental powers against an evil galactic mega corp. Get stronger, go further, and conquer the chaos in this short adventure!

In the merciless sands of the arena, a gladiator is forced to fight for survival. Trakonius defies Mars, the God of War, in this Action Roguelike experience! Face gladiators, mythological creatures, and deadly challenges across four brutal arenas. The truth can only be revealed through combat!

Defeat the Titans as you battle your way into Tartarus to stop Chaos from conquering Olympus and destroying the world. In this rogue-like dungeon crawler adventure, you will play as Perseus, a demigod tasked with one mission; stop Chaos and the evil forces that surround him.

Defeat the Titans as you battle your way into Tartarus to stop Chaos from conquering Olympus and destroying the world. In this rogue-like dungeon crawler adventure, you will play as Perseus, a demigod tasked with one mission; stop Chaos and the evil forces that surround him.

A roguelike dungeon crawler where every card you play brings power… and punishment. Descend through shifting floors, face brutal bosses, and grow stronger run after run.

Challenge the immortal god alongside a colorful cast of heroes in this co-op action rogue-lite, where you'll battle endlessly across Fallen Worlds in hopes of one day destroying the God that took everything from you.

An action roguelike indie game with secrets, loot, necromancy & ability progression from the creator of Songbringer. Each run you build a different sequence of weapons, abilities & relics while keeping your loot, character & world upgrades across runs. Play solo now. Local co-op coming soon.

Osiris is a Roguelike Dark Fantasy game that tells the story of a demigod who wants to escape the Egyptian underworld to save his beloved woman who was doomed to lose her soul forever.

SWORN is a 1-4 player co-op action rogue-like. Explore and reclaim a fallen Camelot from the reign of a corrupted Arthur and his Knights of the Round Table.

Wield Eradicator’s boomerang in high-octane bullet hell roguelite action. Enter the trial for the cure to a deadly virus in the hostile microcosm of Deflector. Repel enemy projectiles, evolve with collected DNA and strike down all opposition.

Equip your sword and special abilities. Jump into the fast-paced action of the rogue-lite mechanics in an orientalist-steampunk universe. Gain experience and get new skills, build your character and save the city by defeating the bosses! Fight to the end or die! No checkpoints!

Plunge into a living nightmare where every roll counts. Chain fluid combat with dice-fueled attacks, stack relics into ferocious synergies, and build unstoppable momentum. Slash through fate, bend chance to your will, and defeat the Black Die in this board-game inspired roguelite dungeon crawler.

Deep Dark Dungeon is a rogue-lite action game in which the player dives into the deep, dark depths of various dungeons filled with bad-tempered monsters that will attack them on sight.

Immerse yourself in the reality show — "Breaking Show", where you engage in real-time battles with various intelligent machines using cybernetic enhancements and weapons. Whether for personal gain or lofty ideals. Fight! Until you reach the final victory on this Rogue-lite journey.

Eko and the Bewitched Lands is a randomly generated Action Adventure RPG with Rogue-like and Puzzle elements. Help Eko rescue the Princess from the Dark Queen. During your journey you will find different weapons, abilities and artifacts that will change the way you play.

Neon Spellstorm is an action roguelite where you race along a crumbling path as a powerful wizard! Chain cast spells, gear up, stack synergies, and gain permanent upgrades as you navigate this otherworldly realm!

Dash-driven samurai rogue-like where momentum is survival. Master disciplined melee combat, defeat brutal demon hordes, unlock powerful gear, and grow stronger with every run. No gimmicks — just pure mastery and challenge.

Fight through procedurally generated levels - from haunted dungeons to futuristic space stations. Choose from 13 unique characters, crush your enemies, gather loot, face deadly bosses, and return to a growing village hub where permanent upgrades await. The demons watch. The angels wait. You fight.

Coreless is a single-player action roguelite with active combat, enemy swarms, randomized gear, and risk-reward loot choices. Aim your abilities, build around Powers and Equipment, and unlock Talents and Research to shape future runs.

Defy the god of the dead as you hack and slash out of the Underworld in this rogue-like dungeon crawler from the creators of Bastion, Transistor, and Pyre.

Xenoadventure is a shooting light adventure game from a top-down perspective, where players will operate a novice warrior in the game. Based on one's own talents, continuously improve oneself from the system and survive

Battlecaster is a challenging fast paced arena roguelike. Defend yourself against unrelenting enemies and overcome difficult encounters. Use abilities strategically to control the ring of combat.

Fuse elements. Evolve your weapons. Destroy the swarm. Mutant Survivors is a fast-paced roguelite bullet heaven where elemental fusion shapes your power. Combine 5 elements to create 10 devastating hybrid evolutions, defeat colossal bosses, and face Voltris.

Purgatory Heroes is an Action-RPG where you must fight through hordes of enemies. A key feature is the ability to play as any destroyed creature whose soul you have absorbed.