is an action-tower defense video game developed and published by Robot Entertainment and Mastertronic.

As the War Mage, the player has the ability to place numerous traps and arm themselves with weapons and equipment to defeat the orcs.

Once the player initiates a wave, they can run about the level to participate in combat or place additional traps.

Skulls are used to buy improvements to traps and weapons in the player's spellbook, such as increasing damage, reducing cost, or making them more effective against the orcs.

Using this power, the Order is able to maintain a perfect world for humanity by using magic to manipulate nature.

The Hero eventually learns that the Horde has been empowered by the Sorceress (voiced by Colleen Clinkenbeard), a past student of the Order who, despite showing overwhelming potential to help defend humanity, instead chose to seek power for herself and used magic to seize control of the Horde.

As the Horde's attacks become more and more aggressive, the Hero eventually chooses to ensure the safety of the human world by stepping back through a Rift and closing them all forever by means of a simple spell.

In the Dead World, the Sorceress is rendered powerless as the Rifts can no longer provide her with magic, and she is left at the mercy of the Horde, who have been reduced to their original, savage state.

Unlike previous games, which generally had a dungeon and tower defense design with limited pathways for enemies to attack from, Orcs Must Die!

Deathtrap, which features 4-player cooperative multiplayer and elements commonly found in roguelite games, is set to be released in early 2025.