Monster Lab Simulator is a creature collector where you create, raise, and battle monsters in your own lab. Synthesize essences, hatch eggs, expand your collection, and build the ultimate team!

In this prologue, you step into Monster Lab Simulator: Prologue – experience the first steps of becoming the ultimate monster creator and battle master!Discover the thrill of synthesizing mysterious essences, hatching rare eggs, and expanding your lab in this limited free version.Buy mysterious essences to hatch unique Fulus from fragile eggs. Every experiment is a chance to create something new. <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/f421ea54e54f696ae5f8bbf214c4e22c.poster.avif?t=1761922810" width=754 height=288 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/f421ea54e54f696ae5f8bbf214c4e22c.webm?t=1761922810" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/f421ea54e54f696ae5f8bbf214c4e22c.mp4?t=1761922810" type="video/mp4"></video>Discover hidden recipes by combining different essences. Unlock surprise creatures and expand your growing collection. <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/687f0250ca6c6eaa7e3dea9e9c521f1a.poster.avif?t=1761922810" width=754 height=288 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/687f0250ca6c6eaa7e3dea9e9c521f1a.webm?t=1761922810" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/687f0250ca6c6eaa7e3dea9e9c521f1a.mp4?t=1761922810" type="video/mp4"></video>Enter turn-based battles in the station. Compete in tournaments for big rewards or test your team in free matches. <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/cb8e07d1db1ecf9390d8ae7e29b5ea4d.poster.avif?t=1761922810" width=754 height=288 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/cb8e07d1db1ecf9390d8ae7e29b5ea4d.webm?t=1761922810" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/cb8e07d1db1ecf9390d8ae7e29b5ea4d.mp4?t=1761922810" type="video/mp4"></video>Orb your creatures to keep them forever in your permanent collection. Store their stats and create powerful combinations. <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/ff6219a74fd2a043f231441ab2e2820f.poster.avif?t=1761922810" width=754 height=288 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/ff6219a74fd2a043f231441ab2e2820f.webm?t=1761922810" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/ff6219a74fd2a043f231441ab2e2820f.mp4?t=1761922810" type="video/mp4"></video>Sell your stored orbs for profit and invest in powerful new machines. Expand your lab, speed up production, and unlock stronger creations. <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/f22d235b4ea4e1c1ff16de41c3f5d352.poster.avif?t=1761922810" width=754 height=288 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/f22d235b4ea4e1c1ff16de41c3f5d352.webm?t=1761922810" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/f22d235b4ea4e1c1ff16de41c3f5d352.mp4?t=1761922810" type="video/mp4"></video>Combine three Fulus into one evolved form with the merge machine. Unlock stronger abilities, higher essence yield, and powerful new battle options. <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/07d082b1b2cdb2ea2db93e57bd9dd7b8.poster.avif?t=1761922810" width=754 height=288 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/07d082b1b2cdb2ea2db93e57bd9dd7b8.webm?t=1761922810" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/07d082b1b2cdb2ea2db93e57bd9dd7b8.mp4?t=1761922810" type="video/mp4"></video>Keep your playful Fulus out of trouble, look after them when they get mischievous, and make sure your lab stays a place where creatures feel happy and healthy. <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/ebe369fe49c0368aed5cf5c2d9c75f9c.poster.avif?t=1761922810" width=754 height=288 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/ebe369fe49c0368aed5cf5c2d9c75f9c.webm?t=1761922810" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4036850/extras/ebe369fe49c0368aed5cf5c2d9c75f9c.mp4?t=1761922810" type="video/mp4"></video>Monster Lab Simulator delivers the thrill of synthesis and battle, the joy of collection, and the magic of uncovering the unknown all inside your very own monster lab.

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Monster Lab Simulator: Prologue Achievements