The Dimensional Orb was a promise of wealth and knowledge beyond humanity's wildest dreams, hidden away from all until it was discovered and brought to the king. Being human, the king was easily tempted, and for a time the promise held true. Riches, knowledge, and incredible stories flowed into the Kingdom thanks to the Orb… but then came the monsters.
Lots and lots of monsters.
Monster Outbreak is a pixel top-down survival game. Take control of Yulia, the last surviving member of the Royal Guard, and confront the endless monster hordes spawned by the out-of-control Dimensional Orb. Gear up, prepare defenses, lay down traps, cook a possible last meal, and try to stay alive.
Go at it alone - or enlist fellow survivors, using classic local split screen or online multiplayer.
The last stand of the Royal Guard isn't over - until it's over.
Yulia has access to a broad range of weapons to be enchanted, from simple swords and axes to sophisticated bows providing elemental attacks, dealing additional damage and opening new ways of containing the endless waves of enemies.
Build up those defenses! Choose from dozens of turrets, including the bomb-javelin launcher, crossbow turret, and bomb slingshot to set up lethal defensive zones.
Keep hordes of dimensional horrors at bay with a selection of traps to deploy including spike strips, tripwire bombs, and elemental traps.
If the fort holds (big “if”), send Yulia into the fray beyond its protective shell and clash with the monster hordes.
Each wave, eventually, peters out. Use the lull in combat to fix up the base - or venture out, explore, fix bridges, and scavenge the derelict Kingdom.
Hunt down monsters for essential components to craft weapons and items to increase the chances of survival - but watch out for brutal bosses that can decide to crash your party at the worst possible moment.
Login or register at the official Steam Website and download Steam client
Install and start application, login with your Account name and Password
Click the Games Menu.
Choose Activate a Product on Steam...
Follow the onscreen instructions to complete the process
After the successful code verification, go to the "MY GAMES" tab and start downloading.
News & Updates
2026-07-20
Our Way of Saying Thank You
Great games are nothing without loyal gamers and we're grateful to have such an amazing community that supports our store. That’s why we’re launching our special “YUPLAY Is Feeling Generous” campaign as a way of saying “Thank you”. During this campaign, with every order over €30 you will receive a free 10% discount code that can be used during your next purchase…
The FIFA World Cup 2026 is coming in hot this summer and while these coming weeks it is all going to be centered around the best game in the world of sports, we decided to bring you a dedicated YUPLAY giveaway to commemorate the occasion together! This promotional giveaway campaign invites all of our followers to try and predict the exact final scores of selected matches from the World Cup…
Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
Entering some text requires manually invoking the on-screen keyboard
This game does not default to external Bluetooth/USB controllers on Deck, and may require manually switching the active controller via the Quick Access Menu
This game shows Steam Deck controller icons
In-game interface text is legible on Steam Deck
This game's default graphics configuration performs well on Steam Deck
