About the Game
Customize and level your character, forge equipment, gather loot, collect pets and more! Take your hero through multiple difficulty modes and challenge/survival missions to earn more experience & even better treasure. Join your friends with 4-player online and local (splitscreen) co-op to plan your strategies together or compete in PvP Deathmatch.

Key Features
- 4-player Online and Local Co-Op - Team-up with up to 3 friends to defend cooperatively, with character classes that support each other’s strengths and weaknesses. Dynamically combine local (splitscreen) and online players and leave/join any time, so that the game’s always full.
- Tower-Defense Meets Action-RPG - Choose your class, customize your character & equipment, strategically assemble your defenses, and participate directly in action-packed battle to preserve your castle against the invading horde!
- 4 Distinct Character Classes - Each character class has a different skill tree, set of towers, and even basic attacks! You can choose if you want to play stealthy, turn invisible, and plant traps behind enemy lines with the Huntress or go all out, block off choke points, and brutally beat your foes into submission with the Squire!
- Loot and Level-Up - Grab the mounds of money and items that your defeated foes drop and trade them or store them for later use in your Item Box! Getting kills and completing waves earns you experience points, which can be used to upgrade your characters, skills, equipment, and towers on a per-statistic basis. Do you want to enhance Hit Points, Attack Rate, Damage, etc? The choice is yours... Store your massive overflow of money in the 'Mana Bank' and then spend it to improve your equipment or trade with other players. Proudly show off your best equipment in your own 'Adventurer’s Tavern', without fear of item theft!
- Tons of Enemies and Huge Boss Fights - Over 100 simultaneous enemies will attempt to tear through your defenses and gigantic Boss Monsters will appear to rain down havoc upon everyone. Only by employing the most effective defensive strategies, teamwork, and strong characters will you defeat such devilish foes! Many enemy types run the gamut from big dumb Orcs swinging huge axes, to lithe Dark Elves that strike from the shadows, to crazy kamikaze goblins! Can you defeat the epic boss battles and collect the special loot while still defending your crystals?
- Mission & Game Play Variety - Each level has a different visual setting, layout, enemy types, traps, and distinct surprises. To collect all the loot and reach the highest levels you must take your character through 4 difficulty modes, survival missions, challenge maps, and more! Some maps force you to have mobile defenses, guarding a crystal which warps around the map. Others have YOU attacking enemy encampments!
- Collect and Trade Pets Online - A variety of pets exist to assist you in the land of Etheria, each with distinct behaviors. These pets can be leveled-up and customized to match your unique play-style. They can even be traded online with other players!
- Secure Trading System - Afraid another player won't live up to their word? Use our secure trading system to trade your precious weapons, armor, and pets with other players online! Watch your name and fame spread online, as people seek out the best pet raisers or item forgers!
- A Mountain of Stats - Every shot you take, kill you make, and defense you build is logged and recorded for posterity. Pore over the voluminous charts and graphs at the end of each session to analyze your team’s performance, quickly review your best statistics for each level, and compare your data online with other players to see who is the greatest hero of all. Furthermore, your Achievements are visible for all to see within your very own Adventurer’s Tavern, and the highest scores for each of your heroes are ranked on the worldwide leaderboards!
- Dungeon Defenders Development Kit - Dungeon Defenders includes a free development kit where you can create and edit new Dungeon Defenders missions and more utilizing all of the existing Dungeon Defenders assets. Download and share these user created levels via Steam Workshop for an endless Dungeon Defenders experience!
Screenshots
11 imagesVersion Information
Steam Patch Notes
Official update history
Bug Fixes
- Fixed broken controller support from 10.9.10
For Etheria!
General Changes
- Updated steam api version. Games are no longer using Steam's Peer to Peer (2012 system) and instead use Steam's SDR (Steam Datagram Relay, 2026)
Known issue that controller support is broken due to video support. Looking into it
Bug Fixes
- Fixed 64 bit exe not having movie support
For Etheria!
Bug Fixes
- Fixed Magus Citadel starting wave
For Etheria!
General Changes
- Tower SFX Slider in Options Menu
- Ultimate Drop SFX Slider in Options Menu
Bug Fixes
- Fixed Magus Citadel skipping to boss fight. Fix for starting wave comes on the next patch
For Etheria!
New Content
- Added Billboard to main menu that shows news, discord invite links and unowned DLC
- Harbinger Minion that costs 550 mana and 12 MU units. Shoots Fire projectiles at enemies and if they get close enough, zaps up to 3 of them for increased Lightning damage every tick.
- Dropped equipment above ult quality now plays a special tune instead of the default one, with a tune for Ult/Ult93, for Ult+ and for Ult++. Ult++ tune should be global so you can know if one was dropped anywhere in the map. You can disable each specific quality tune on the UDKCDTSettings file
General Changes
- Added all missing in-game achievements to steam using the new Steam Beta Achievement sets, which doesn't remove the game achievement completion for old players if they don't want to hunt on the game again
- Ranked Anti-Cheat confirmation on first ranked login after server changes
- Added new tower archetypes to CDT settings configs
- Tiki vs Islands contest items with special description
Balance Changes
- Cardboard manatee melee hit radius 325-> 400
- Reduced Mortar tower damage by 5.3% on high end Tower Damage stat. Lower reduction with lower stats
- Increased Harpoon and Bowling Ball projectile damage by 20%
- Increased Slice and Dice max suction range from 550 to 800
- Increased Slice and Dice radius while in max rotation from 442 to 550
- Increased Spiky Blockade damage by 20% and range from 675 to 750
- Increased Bouncy Blockade effective radius from 325 to 400 and enemy check radius from 350 to 400
- Increased Bouncy Blockade Tower Damage stat scaling
- Lowered damage on towers from characters after the hermit on <5000 stats to make them more in line with older towers
- Under 1000 Tower Damage - 40% reduction
- Between 1000 and 1999 - 20% reduction
- Between 2000 and 2999 - 20% reduction
- Between 3000 and 3999 - 8% reduction
- Between 4000 and 4999 - 6.7% reduction
- Under 1000 Tower Damage - 40% reduction
- Increased activation distance on lamps on CP2 TBR Ruthless from 600 -> 1200
- Added extra Turkey Accessory drop to Ruthless Survival Completion on Akatiti, will be removed when Islands vs Tiki contest ends
Bug Fixes
- Fixed Electric Auras are stopping Inferno Traps from dealing damage
- Fixed Electric Aura Damage Numbers when changing FPS
- Fixed Magical Academy Adept going invisible when going under water
- Fixed building apprentice/adept towers making you disconnect from PvP maps
- Fixed Apprentice Guardian and it's counterparts boosting Guardian Towers and Darkness Trap
- Fixed Player Abilities being able to grant buffs when spammed without cooldown and no mana cost under certain conditions
- Made Bouncing and Homing projectiles not target enemies with the same elemental type as their main damage type
- Guardian mesh material base change for Owl nest projectiles
- Fixed impact emitter on Owl Nest Projectile being spawned constantly off-host and not only on enemy impact
- Fixed Kijo Summoner using male sound cues
- Added Transcendent Survivalist check for Ruthless difficulty. Not possible to mix and match with Nightmare difficulty for completions, checks each difficulty on their own
- Fixed Outline, Damage Flashes and Low Health Screen Red Tint not working when Post Processing is turned off
- Fixed Damage Flashes Options menu configuration not working
- Fixed Outline option on Options menu requiring a level change to apply
- Fixed some slow checking achievements being called even if the achievement is already unlocked
- Fixed Gunwitch minimap icon being blown out in colors
- Fixed Oni Horns forcing hero damage
- Fixed Phoenix being immune to Icy Needle damage
For Etheria!
Bug Fixes
- Fixed Raining Harbingers skipping to boss on wave start
We'll be having a community event from October 9 to October 11, which you can read more about here
For Etheria!
Balance Changes
- Add Notification for Boss only takes generic damage on boss wave on Raining Harbingers
- Add ev beam resistance to Boss on Raining Harbingers
- Decreased mana per chest to 400 on Raining Harbingers
- Set the Defence Units to 120 on Raining Harbingers
- Increased boss damage and damage resistance on Raining Harbingers
Bug Fixes
- General collision fixes on Raining Harbingers event map
- Fixed Health Bar not appearing for boss on Raining Harbingers
We'll be having a community event from October 9 to October 11, which you can read more about here
For Etheria!
General Changes
- Changed the icon for Love Machine Magicite to match more closely the actual item
- Added a memento on Outdoors Tavern
Balance Changes
- Increased manatee melee hit radius to 325 from 200 so it hits stuff like owls
- Buffed Lover's Paradise Siege Mech drops
Bug Fixes
- Made lights activation text on Boss Rush II and Workshop Assault replicate properly off-host
- Increased manatee melee hit radius so it's meele hits are equal to other melee pets
- Removed East spawns enemy invulnerability while in the spawn circle on Warping Core Pack Part 3
- Fixed Mermaid Countess not having the headband jewel showing
For Etheria!
Bug Fixes
- Undid the additional fix for infinite stuck map selection, as it was causing issues adding splits off-host
For Etheria!
General Changes
- Added so you can lock an entire page using ctrl+L
- Instant Upgrade Tower was preferring healing over upgrading when it had the mana, now it should upgrade first, then use the remaining mana if it's not able to upgrade heal.
- Text indicator for when you press a keybind that changes a setting
- Added a configurable survival starting wave that persists. The default is 22, and if the player hasn't beaten that wave, it goes to the closest highest wave
Balance Changes
- Made Enrage Aura work on Real Time Strategist award again
Bug Fixes
- Fixed Manatee Event Attack Speed and animation
- Move Tower making towers fly should be removed now, height compensation was never used
- Additional fix for infinite stuck map selection
- Auras should now accurately not effect enemies with spawn-immunity
- Fixed Palantir Starting mana on Ruthless difficulty
For Etheria!
General Changes
- Added sound to Guardian's Divine Judgement ability
- Made CR1-4 Rewards Setting save between runs
Balance Changes
- Decreased Guardian's Divine Judgement number of on-hit activations. From one activation every 2.3 seconds to every 3.5 seconds
- Increased Mummy damage multiplier by 20%. This should make it 3% better than a Zamira's Mount
Bug Fixes
- Fixed positioning and scale for Gargoyle Horns on Super Legendary Monk
- Fixed Gun of Hearts not being able to damage enemy cores
- Moved south djinn spawn so they don't have to go through holes to get to defences on Infested Waters
For Etheria!
Balance Changes
- Made Mortar Damage Reduction on Tinkerer's Workshop non-boss EV's 40%
Bug Fixes
- Added kill volume to crystal with collision on Etheria's Primordial Palm east island
- Added music to Etheria's Primordial Palm
- Hopefully fixed Tavern Incursion gas immune enemies not having ruthless materials applied to them
- Added Infested Waters in-game achievement and trophy
For Etheria!
Current Release
Build 24293532
Uploaded Jul 26, 2026
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Additional Files
DLCs (Legit Owners)
1 file · For legitimate game owners
System Requirements
How to Install
Binaries\Win32\DunDefGame.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
Needed when extracting (WinRAR / 7-Zip) — not a site login.
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