
Screenshots

Watch trailer on Steam ↗Order Of The Gatekeepers
TimeSink Inc. · Published by TimeSink Inc. · Official site ↗
Positive — 93% positive (41 reviews) · 21 achievements
Last updated 27 Sept 2026
Online Co-Operative Tower Defense with endless build options and a heavy focus on rewarding creative strategies. With so many Levels, Towers, Abilities, Items, & Builder Specialties every match can be a different experience!
£8.50
Lowest price we've ever recorded
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Price history
Action, Indie, RPG, Strategy, Casual · 2020 · More £5 - £15 games
Embark on creative strategies and endless builds in Order Of The Gatekeepers, a 2020 cooperative tower defense game from TimeSink Inc., where your choices shape each unique match.
About this game
Features:
- 45 Towers complete with over 100 unique abilities
- Over 70 Items to upgrade the strength of your Towers
- 14 Builder Specialties to change the behavior of your Towers
- Over 30 unique levels to play in either Single or Multiplayer modes
- 4 Difficulties that change the mechanics of the game allowing anyone to have fun
- Online Co-Operative play with up to 6 players
- Singleplayer campaign to challenge solo players with different scenarios
- 5 Gameplay Modifiers including an Endless Mode!
- Fully featured Level Editor, the same one used to make the Official Levels!
Made as a passion project from a love of the Tower Defense genre, the game was designed from the ground up to encourage critical thinking & experimentation. With endless possible Tower, Item, & Builder combinations every match can be a different experience!
System Requirements
Will my PC run this? →Minimum
- OS *: Windows 7
- Processor: Dual Core 3.0GHz or higher
- Memory: 8 GB RAM
- Graphics: 2GB VRAM
- DirectX: Version 11
- Storage: 1200 MB available space
Recommended
- OS: Windows 10
- Processor: Quad Core 3.0GHz or higher
- Memory: 8 GB RAM
- Graphics: GTX 1050Ti or RX 370
- DirectX: Version 11
- Storage: 1200 MB available space
Supported Languages
*languages with full audio support
Latest news
AnnouncementsOfficial
It's Not Dead?
I've been playing this a lot lately and got annoyed at all the ancient bugs and balance issues. Since I've got a few weeks off work for the holidays I jumped back into the code and made some massive changes.This game started my professional career as a game dev so coming back five years later to apply what I've learned has been really fun.ChangelogGeneralAdded more robot flavor text.Autocastable Active Items now activate when an enemy enters their Tower's Attack Range.Fast-forward speed in Singleplayer increased from 3 -> 3.5x.Kills by towers on Hard and Serious difficulty now provide experience to nearby towers like they do on Easy and Normal difficulties.Easy -> 35% of the kill XP goes to all nearby towers.Normal -> 25% of the kill XP goes to all nearby towers.Hard -> 25% of the kill XP is divided among nearby towers.Serious -> 20% of the kill XP is divided among nearby towers.Experience from kills reduced by 15%.Improved Tower Targeting Algorithm:No longer makes sub-optimal choices sometimes in maps like Strikethrough due to odd path shapes.Now takes into account Abilities for certain Towers and not just Auto-Attack range.Star's Active deals more damage than its Auto Attack and is treated as its true "damage range" when Towers are deciding what to attack.Also applied to the Volcano.It's possible to enable this for any Tower but not very many can "carry" so I didn't find the experience pleasant when this was applied to Towers that deal a bit of long-range damage but don't murder everything in sight.Towers that cannot deal Auto-Attack damage (Life Guardian, Alchemical Lab, Support Structure) are treated as having no "damage range."Fixed these algorithms for Mazing levels as well.Fixed bug with Mana Motor that could lead to its buff no longer applying.Fixed Items teleporting back to their slots if a HUD update is triggered while dragging it.Fixed enemy gibs often not simulating their physics correctly.Fixed being able to break the game by selling a Tower with a Soul...Read full article on Community Announcements (Jman)Patch NotesOfficial
Unity ACE Exploit Patch
Got an email saying all Unity games built with versions 2017 or later were affected by an exploit so I put out a quick patch to fix it.If you're curious about the exploit you can learn more here.Read full article on Community Announcements (Jman)Patch NotesOfficial
Balance & Bugs
I came back from the dead to make the least used specialties viable and do a bit of extra balancing. Early Bird starting gold bonus from 500 -> 550. Enraged attack speed bonus from 65 -> 85. Hunter bonus damage to bosses from 100% -> 125% Hunter damage to mobs penalty from 25% -> 15%. Demolisher now provides a bonus 3% crit chance across all towers. Thinner damage to bosses penalty from -20% -> -12% Timewinder attack range penalty from -100 -> -40. Timewinder buff duration penalty from -50% -> -40%. Shifter Earth Hammer damage from 325+100/lvl ->325+120/lvl. Whirlwind Bombardment damage from 205+45/lvl -> 205+60/lvl. Cactus Uproot mana cost from 125 -> 105. Life Guardian's Impotent Mercy no longer set to autocast by default. Fixed issue where dragging an item from one tower to another using the popup item context menu wouldn't work correctly for HUD Scales other than 1. Fixed every single normal map in the game having an inverted green channel.Read full article on Community Announcements (Jman)AnnouncementsOfficial
Mutators Have Arrived!
As a bit of a holiday update I've put together some gameplay modifiers to change how the game plays. These can be used in either single or multiplayer modes but not the main campaign. I hope everyone enjoys this new update! Patch Notes:Added Gameplay Mutators! You can mix and match different mutators to modify the game's core rules for fun or an added challenge. No Wave Delay:Removes all the time between waves so that players have to deal with a constant stream of enemies. Cannot Buy Items:Ever wonder if you could win a match with just towers? Adds one extra starting faction point. One Health Mode:If a single robot escapes, players immediately lose the match. Enemies Drop Items:Not only will robots drop potions, but normal items too! Gold gain reduced by 90% with this mutator active. Combine costs removed from all items in this mode, allowing players to build Combination items out of Components they receive. Endless Mode is now a mutator. Added new Achievements for completing challenges with the new Mutators! Holding the "Show Paths & Build Locations" hotkey (Default: Left Shift) now shows a quick readout of a tower's items as you mouse over them. Moving an item from one tower to another now shows the items currently on the tower you're trying to move the item to. When dragging an item from one tower to another, dropping the item on top of a specific item on the other tower will swap them. Optimized Shop Menu first open to have less of a stutter. Fixed Time Machine O Kosmos effect not having screen shake for multiplayer clients.Read full article on Community Announcements (Jman)Patch NotesOfficial
Bug Fix & Balance
Patch Notes:Time Machine Fast Forward buff cooldown reduction from 2.5+0.25s/Lvl to 2.0+0.2s/Lvl Vacuum Turbocharge passive mana spent to supercharge conversion rate from 1.4% to 0.35% Fixed moving Towers being broken in certain non-mazing levels.Read full article on Community Announcements (Jman)






