About the Game
FUEL YOUR SCIENTIFIC CURIOSITY
Monster Lab Simulator delivers the thrill of synthesis and tactical battle. Every experiment is a surprise, and every recipe is a chance to discover something legendary. Are you ready to manage the world's most advanced monster lab?
Purchase mysterious essences, synthesize eggs, and complete their growth in the incubator to bring unique Fulus to life.
Discover hidden recipes by combining various essences. Obtain surprise Fulus and expand your ultimate collection.
Legendary Fulu Battles are about to begin. Prepare your squad and take your place in the war room.
Capture your Fulus with orbs and add them to your collection. These orbs will form your elite battle army.
Sell your orbed Fulus and reinvest to acquire new high-tech products. Expand your lab, accelerate production, and obtain even more powerful Fulus.
Merge three Fulus using the evolution machine. Unlock stronger abilities, higher essence yields, and brand-new tactical combat options.
Keep mischievous Fulus out of trouble, watch over them when they get naughty, and ensure your lab is always a happy, healthy environment for your creatures.
How lucky are you? Spin the lucky lever and win surprises to power up your Fulus.
Obtain special eggs from ancient ambers. Melt the ambers and reveal the eggs hidden within.
Fulus exhausted from battle regenerate in habitats matching their elements. Keep them happy by placing them in the correct elemental zones.
Monster Lab Simulator combines the thrill of synthesis and combat with the joy of collecting and the magic of discovering the unknown—all within your very own monster laboratory.
Other Features:
20 Unique Fulu Families – Discover 20 different Fulu lineages in your lab!
Abilities & Elements – 80 distinct abilities tailored to specific Fulu families and elements!
Order Management – Monitor the order screen and boost your economy by meeting market demands.
New Areas to Explore – Level up to unlock deep sections of the laboratory. Upgrade your facility, enhance machinery, and maintain hygiene.
Assistant Trash Robot – End the lab clutter; add the stylish and hardworking trash robot to your team.
Daily & Weekly Missions – New laboratory tasks await you every single day!
Finally; A Pair of Eyes… – Beware of the eyes that are constantly watching you in the lab.
Screenshots
13 images
Version Information
Steam Patch Notes
Official update history
Hello Scientists 🙋♂️
🛠️ You can find the fixes made in version 0.2.3.3 below:
Fixed an issue where the Hatch a Rare Fulu from a Common Egg mission would not complete properly.
Fixed Battle Room Chamber Feeders not correctly triggering feed missions.
Fixed Weekly Protocol missions for Create <any element> Fulus not saving progress.
Fixed Daily Experiment missions for Win a battle with a team of only <any element> Fulus changing element whenever the game was loaded or after returning from battle.
Fixed interaction issues between the Easter Special Reward: Floralis Figurine and the Plumber Gun.
Fixed a bug causing the Easter Event Mission to exceed its intended mission range.
Fixed multiple naming inconsistencies, such as Oxar being shown instead of Oksar.
Fixed tutorial softlocks related to opening a room and the tutorial becoming stuck. Existing softlocks should now be resolved after loading your save file.
[img src="{STEAM_CLAN_IMAGE}/45782129/e9d1039169f7d4c0084c2b3bf4fc168efb8a4681.png"]
Hello Scientists 🙋♂️
🛠️ You can find the fixes made in version 0.2.3.2 below:
Fixed an issue where the Hatch prompt was showing V instead of X in the UI.
Fixed an issue where the game getting stuck after taking a nap on the couch.
Egg Hunt Special Eggs can now be stored in the Refrigerator.
[img src="{STEAM_CLAN_IMAGE}/45782129/93c1669a492007da06c53c2c94d4fa4f4d3f4363.png"]
Hello Scientists 🙋♂️
🛠️ You can find the fixes and improvements made in version 0.2.2 below:
Improvements;
Battle Room Healing Chambers now show your Fulus current health while healing.
Bug Fixes;
Steam Cloud Save sync issues have been resolved.
“Unlucky One” achievement has been removed, since it’s no longer possible to complete after the latest balancing updates.
“Extract a Legendary Fulu” achievement was only triggering for Adult Fulus. Now it triggers correctly.
Weekly Protocol: “Complete all Daily Experiments” wasn’t completing properly. This is now resolved.
Powder notification visual issue has been resolved.
EYF quest chain: buying the Empowering Machine and Extraction Machine together was soft locking game until reload. This is now resolved.
Weekly Protocol: “Win 5 Battles in a Row” wasn’t progressing as it should and wasn't completing properly. This is now resolved.
Missions “Hatch a Rare Fulu from a Common Egg” and “Find an Epic Egg from Amber” weren’t completing properly. This is now resolved.
[img src="{STEAM_CLAN_IMAGE}/45782129/93c1669a492007da06c53c2c94d4fa4f4d3f4363.png"]
Hello Scientists 🙋♂️
🛠️ We’re constantly improving Monster Lab Simulator, and a new content update is on its way. We’re planning to share a devlog in the next days. You can find the changes in this hotfix below:
Improvements;
Extraction Machine has been balanced. It now drops fixed amounts instead of using RNG.
[img src="{STEAM_CLAN_IMAGE}/45782129/93c1669a492007da06c53c2c94d4fa4f4d3f4363.png"]
Hello Scientists 🙋♂️
🛠️ We’re constantly improving Monster Lab Simulator, and a new content update is on its way. We’re planning to share a devlog in the next days. You can find the changes in this hotfix below:
Improvements;
Robot Helper keeps up the hard work! It can now carry three objects at the same time, helping you organize your lab better than ever.
Orb Vending machine is now freely moveable!
Added a new sound effect for order tube.
Daily Experiments and Weekly Protocols are now being generated right after the tutorial completed. New players will no longer wait for a Day or a Week (in game) to pass.
Minor adjustments were made to the Furnace in the Starting Area: its depth was increased, the step in front was lowered, and the hatch was raised.
The orientations in the Refrigerator UNC-2000 for the Iron Skin Potion and Defensive Potion now match the rest of the potions.
Requested order rarities are now clearly being written in the order screens.
Bug Fixes;
Fixed a bug that prevented Bour, Bourat and Bournex from being defeated in battle. Naughty Bour is now properly tamed!
Fixed a bug where the player’s team always started battles at full health. Health values are now correctly carried over into battle.
Fixed an issue where the following achievements were not being completed properly: Nerimpossible, Gardener, Pure Elements, and Fulus on Fire.
Fixed an issue where radio wasn’t being effected by music volume.
Fixed a bug where an empty quest titled “To pick up an item, press LMB” could spawn. This has been resolved and will no longer occur.
Monster Lab Simulator is still in development and players have found some hidden panels that are still under construction. These panels are now properly hidden until they’re ready!
[img src="{STEAM_CLAN_IMAGE}/45782129/93c1669a492007da06c53c2c94d4fa4f4d3f4363.png"]
Hello Scientists 🙋♂️
🛠️ You can find the fixes and improvements made in version 0.1.8 below:
Egg drop rates for Amber is slightly increased.
Not being completed issue with Daily Experiments and Weekly Protocols with Rarity targets are now fixed. Those missions now will be properly completed and rewarded.
A bug that allows players to complete same Daily Experiment or Weekly Protocol multiple times is now fixed.
Daily Experiment; Heal a Fulu in it’s own Elemental Habitat’s description was misleading. Description is updated to: Completely heal a Fulu in its own Elemental Habitat.
Battle Duration title in Battle Completion Panel was wrongly translated in some languages. It’s now properly translated in all languages.
Fixed an issue preventing completions for Daily Experiments or Weekly Protocols related to Battle.
Fixed a backend issue where AutoSave tries to save in Battle which wasn’t intentional.
Fixed an issue where camera locks into a specific direction and blocks the gameplay.
Attempted to fix: Collision issues with; Biscuit, Energy Bar and Turkish Delight. They shouldn’t pass through ground collider anymore.
[img src="{STEAM_CLAN_IMAGE}/45782129/93c1669a492007da06c53c2c94d4fa4f4d3f4363.png"]
Hello Fulu creators, 🙋♂️
🛠️ We are continuing to work on the bugs and suggestions you’ve reported. Here are some of the bugs we’ve fixed:
Fixed a rare but critical issue where the tablet could get stuck open and block gameplay. We’ve added safeguards and believe the error should no longer occur. If you encounter the described issue, please report it in our Discord right away(ideally with your save file + a short clip)
Visual Settings now correctly caches resolution options and won’t cause any stutters.
Fixed an issue where some leaderboard entries could display placeholder text.
Fixed an error that could occur when an object currently in view gets destroyed.
[img src="{STEAM_CLAN_IMAGE}/45782129/93c1669a492007da06c53c2c94d4fa4f4d3f4363.png"]
Due to the high demand for Fulus in the market:
Minimum sell price increased by 30%
Maximum sell price increased by 10%
Overall sell margins for Fulus have been raised
Orders already in place will not be affected
[img src="{STEAM_CLAN_IMAGE}/45782129/93c1669a492007da06c53c2c94d4fa4f4d3f4363.png"]
Crashes caused by Visuals tab in Settings is has been fixed. 🛠️
[img src="{STEAM_CLAN_IMAGE}/45782129/93c1669a492007da06c53c2c94d4fa4f4d3f4363.png"]
Current Release
Build 22766394
Uploaded Jul 09, 2026
System Requirements
How to Install
Monster Lab Simulator.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
2.3 GB
22766394
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Download Monster Lab Simulator for PC with a direct link or via torrent. Get the full version of Monster Lab Simulator for free. Monster Lab Simulator is a Casual released by Round3 Studios.