Blog: New Game Mode: Chaos Trials!

sashimiaksashimiak Member, Moderator, Robot Entertainment
edited October 2017 in Official News & Patch Notes
(June 1st, 2017)

New Game Mode: Chaos Trials!

We’re pleased to announce that the next Orcs Must Die! Unchained update will introduce a brand new, survival-based game mode called Chaos Trials!

Chaos Trials bring the chaos and dynamic play of Sabotage mode and the problem-solving of Weekly Challenges to Survival gameplay. Available to teams of 1-3 players, Chaos Trials offer lucrative rewards for conquering a series of increasingly difficult challenges. Though each trial begins simply they increase in complexity and difficulty with every victory. Put yourself to the ultimate orc-slaying test!

Chaos Trials: The Basics

Chaos Trials are accessed with Chaos Keys that are occasionally discovered while playing matches in all other game modes, or earned as a daily login reward. Each key has an associated challenge level from Apprentice through Rift Lord, and players are likely to encounter keys of all challenge levels up to their current progression.

Each Chaos Key begins at tier 1 with a randomly selected map and additional modifiers. With each successfully completed tier the Chaos Key upgrades, increases the overall difficulty, selects a new map, and adds additional modifiers into the mix. Each time a challenge is failed, one of three Chaos Key lives will be lost. After three failures or twelve successes, the Chaos Trial ends.

Chaos Trials: The Details

Each Chaos Key begins at tier 1 with a basic set of random modifiers and randomly selected map. This forms the basis of the first tier challenge for this Chaos Key.

For this tier 1 Throne Room challenge, ceiling and floor traps are more expensive and mana drops are more frequent.

Successful completion of a tier upgrades the Chaos Key, registers the score on the leaderboard if it is a player’s highest score, awards a chest to each participating player, reselects an eligible map, and adds additional modifiers to those already in play. 

For this tier 2 challenge, no health drops and minion rush are added as new modifiers to the existing trap cost and mana drop modifiers. The map also changed from Throne Room to The Baths.

Each tier victory further upgrades the Chaos Key and brings another chest, another new map, new modifiers, and a higher cumulative score. Maps will not repeat until each eligible map has been played once.

For this tier 3 Chaos Trial, two new conditions are added and the map changed to Banquet Hall.

Each challenge defeat consumes one of the Chaos Key’s 3 lives, but does not change the map or conditions. No chest is awarded for defeat, and instead the remaining lives and current score are displayed.

The Chaos Trial will end if 3 losses are registered. Each Chaos Trial offers a maximum of 12 unique tiers and will also end if all 12 are all successfully finished!

With Great Challenge Comes Great Rewardability

Chaos Trials are extremely challenging but also one of the most rewarding game modes in OMD!U. They offer a chest after every victory as well as an increasing number of skulls based on progression through the tiers. 

Chaos Trials also feature a leaderboard to track high scores, allowing players to compare their performance to other War Mages. Leaderboard scores for this mode are cumulative for each individual Chaos Key and players can have one top score registered.


One of the challenges in game development is how quickly players progress through content in comparison to how long it takes to develop. Many of our most passionate, devoted players have 5-starred all the maps that OMD!U currently has to offer, or earned hero victory chests for their favorite heroes. 

One solution to that problem is to create game content that is repeatable without becoming repetitious – content that is different each time, enjoyable to play, and rewarding for players. Sabotage is an example of this design principle; going head-to-head with other players, each game is a new and unpredictable experience. Chaos Trials are another variation on this concept designed as a cooperative, increasingly difficult challenge with randomized modifiers. Chaos Trials also offer players a gameplay mode with an endless supply of chests to continue collecting and upgrading their loadouts.

Like Sabotage, Chaos Trials are designed to build upon basic Orcs Must Die! gameplay, skills, and strategy to challenge experienced War Mages. Chaos Trials are also designed to scratch the itch of classic Nightmare mode gameplay by providing extremely difficult content for the most skilled players.


Bring your questions and join Harmonia and Shade this afternoon for a special episode of Insider Access on Chaos Trials at 3:00 p.m. Central, only on

Update: if you missed the live broadcast be sure to check out the VOD below!

German Community Manager
Post edited by sashimiak on
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