Top similar games like Millennium Slumber:

Layer Hunt is a singleplayer, survival sandbox game where the goal is to survive and hunt down all the bosses. To reach your goal you will have to mine, craft, build, farm, fight and explore for new abilities and resources.

Chop trees, cook meals, build your home and play music to control the wild! Explore a procedurally generated world and survive your way through art.

Explore, collect and build in this action roguelike, create bases, hire allies, evolve your character and survive hordes of enemies as far as you can handle!

Hold the Line is a top-down 2D roguelite survival game. Survive on a randomly generated island, prepare by day, endure the night, forge your survival build, adapt to dynamic events, and face the final trial on Day 7.

Defend a crashed forge in this 2D survival defense roguelite. Expand a modular world grid, build towers and traps, and survive relentless enemy waves across shifting days, storms, and darkness.

Welcome to Keplerth! Try to survive on a hostile alien planet in this 2D sandbox RPG, where you can choose to live alone or fight side by side with your friends in the online multiplayer mode. Survive, build, farm, fight, and explore your way to victory in this open-world adventure!

Forage, craft, fight, form clans, and expand your settlements in a dynamic, ever-changing ecosystem. Keziah’s Realm offers a unique gaming experience where you must survive in a rich, procedurally generated world, alongside intelligent NPCs who possess abilities equal to those of the player.

Explore the organs of the human body to fight off the rampant infection and save the patient - with your friends, or solo!

Take control of a talkative little Cubit, who knows he lives inside a game, and do your best to ensure both of you survive in this harsh, unforgiving world.

SurvAIval is a 2D survival automation game where you gather resources, build a base, create AI assistants, and explore new areas to expand your domain while defending against threats and leveling up your skills.

Fight your way through an endless tower packed with monsters and treasures. Every run is a new chance to survive, adapt, and reach the 33rd floor.

From stone tools to modern weapons and giant mechs — survive, craft, and conquer another world.

Descend into a dangerous, procedurally generated sci-fi underworld. Explore, gather resources, uncover powerful wargear and upgrades, rally your droids, build and defend your base, and battle a mysterious new species on the verge of breaching the surface, either alone or in co-op.

Unearthed is top down mining adventure set in a procedurally generated blocky underground world. Explore endless cave systems filled with dangerous creatures and unexpected companions. Mine resources, survive the depths, and rebuild the world as you see it fit.

A sci-fi, base-building adventure where you build a 'ship' on an asteroid; explore space, battle slimes, raiders, space rhinos, and more. A story that includes following orders from a mysterious AI, shooting fish with a space grappling hook, invading space stations, fixing the exploded moon, etc.

Every adventurer must face the Trial — a boundless pixel-art sandbox where you can explore, build, mine, farm, and challenge epic bosses. Play solo or with up to 3 friends in thrilling top-down adventures.

In a world where a robot revolution failed, the last humans search for a way to survive and escape. Beacon of Neyda is a side-scrolling action-strategy game where you must survive waves of enemies while creating and upgrading your base as you explore a world in ruins.

A space exploration adventure in the purest tradition of roguelike. Featuring procedurally generated solar systems, perma-death and tactical turned-based gameplay!

Dig and explore the depth of the earth. Mine and harvest miscellaneous resources. Craft better tools and weapons and expand your base ! Fight against local mobs. Unlock electricity to lighten the darker depths. Automate harvesting to reign on the underground world !

Unreal Element World is a Roguelike overlook game;

Natura: Reborn is a top-down sandbox adventure where nature and creatures have fused. Explore, survive, and fight through an overgrown fantasy world.

Survive an untamed world where humans, animal villagers and wild animals all coexist, but not in harmony. Craft, farm, cook, and assign roles to villagers. Explore various biomes and muster an animal rebellion to fight back against human invaders.

Explore, mine, and fight your way through the galaxy in this 2D space mining adventure! Unearth the relics of ancient civilizations and face the horrors that linger beneath alien worlds.

Craft in Abyss is a tower defense rogue-lite game. It allow players to design their own mechanical fortress, gather resources and continuously strengthen the fortress facilities within a sci-fi world.

You receive a call for help and travel to a distant planet to fight enemies, mine resources, and uncover the truth. Upgrade your character to become the most feared frog in the galaxy.

An emergent open world exploration and survival game. Explore vast islands overrun by robot life and uncover the mystery of the cataclysm that flooded the Earth. Play solo or in co-op.

A relaxed roguelike space odyssey in a procedurally generated universe! Travel through a lonely and mysterious cosmos. Customize your ship, explore and survive!

Land on a distant planet in this chill resource management game. Harvest alien resources, build and automate machinery, uncover secrets across the stars and strike shipping deals with distant colonies for exclusive rewards!

A 2D sandbox rouge-like where you must outrun a killing wall using the vast resources of a randomly generated world. You can explore for luxurious loot, build shabby shelters, or simply run as fast you can. Can you escape the inevitable increasing killing wall and reach 1,000,000 blocks?

Discover a still unexplored region of space: the Exot galaxy. With your C.L.I.C. as your only ally, obtain the resources necessary for your survival. Develop your ship, improve your workshops, face creatures to conquer these hostile lands.

1WEEK is a PvE sandbox in which you'll live in a post-apocalyptic world of exploration and survival in the underground by looting, building, crafting, farming, and fighting. Be self-sufficient before your week’s supplies run out.

Infiltrate the remnants of a fallen empire, extract valuable loot, establish defenses against hostile fanatics, and unlock the gateway to a dimension of cosmic dread that defies comprehension.