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Watch trailer on Steam ↗Unknown TD
KNdev · Published by KNdev
3 user reviews — 100% positive (3 reviews) · 5 achievements
Last updated 8 Oct 2026
Unknown TD is a fun, semi-casual Tower defense game, with plenty of towers, maps and other interesting stuff for the player to interact with!
£4.59
Lowest price we've ever recorded
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Price history
Indie, Strategy, Early Access, Casual · 2025 · More under £5 games
Explore strategic placements of various towers to defend against waves of foes in Unknown TD. Developed by KNdev for casual and serious players alike, this early access title combines engaging gameplay with a plethora of maps and towers.
About this game
Welcome to Unknown TD!
Unknown TD is a Tower defense game, with multiple interesting features in the works, we're happy to provide fun semi-casual game for you to enjoy! With a handful of maps and towers along with a hero tower for the player to play around with.
The hero tower
The hero tower has a lot of customisation coming to it in future updates, not only limited to pistols, flamethrowers and sun glasses, but a wide array of cosmetics, weapons and abilities!
The game also features...

Unique and ... interesting ... towers!
Unknown TD has (finally) got a good selection of (yet again) very unique and interesting towers. Some more practical, some more chaotic and others more Dinghy-tower-like (interesting) than others.
The game is currently in an unfinished state, with plenty more content to come in the form of gamemodes, towers, maps, hero equipment and much much more. Enjoy the (for now) early access game!
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: Windows 10 Home
- Processor: Intel Core i5-8250U / AMD Ryzen 5 3500U
- Memory: 8 GB RAM
- Graphics: AMD Radeon™ Vega 8 / Intel UHD 620
- Storage: 512 MB available space
Recommended
- Requires a 64-bit processor and operating system
- OS: Windows 11 Home
- Processor: Intel Core i5 8600 / AMD Ryzen 3 3300x
- Memory: 16 GB RAM
- Graphics: NVIDIA GeForce GTX 750 Ti
- Storage: 1 GB available space
Supported Languages
*languages with full audio support
Latest news
Patch NotesOfficial
The "Cold Front" Update!
Welcome to the Cold Front update!So about that other half... Well it's here but very delayed. Oops.. Anyway, to make up the wait, here are some new things to test and play!New Content:CRATES!!!!!There are now crates in Unknown TD, which can contain multiple different things. Crates can contain:Hero WeaponsCoinsXPGems(More to come)And another thing..The new winter event!Can you destroy the zombified Santination??This new event and event system comes with a map and new difficulty, as well as some new zombies to defend against! There are currently 8 waves, 2 new zombies and 1 "new" boss to destroy in this event.Now what is your spoils for this? Progress in the Battle pass!Which has some new cosmetics, crates and a tower... But that is for you to try out, in this new major update!Changes:Adjustments:Shadows appear on map elements at Medium settingsSmall text has a different font typeSeasons have been added, including None (Regular, Summer / Spring), Halloween + Autumn and Christmas + WinterAdded a small health bar above the tower hot bar for bossesAdded a small mini map in the bottom rightFixes:Commando now fires at a fixed rate no matter game speed, except shoots more shots at faster speeds, fixing issues with time imprecisionMajority of the projectiles in the game now account properly for game speedEnemy speed de-buffing has been fixed properly to time scaleText no longer gets blurry with pixel filter enabledTower Changes:Hero is now more expensive on lower upgrades to even out efficiency curveScout has had a major rework, including most sprite work and balancingGrenadiers 3-x and x-3 paths cost less, but are slightly weakerCommando now has more "fair" damage scaling per cost, but is also on the list to be reworkedBottom path flamethrower has been heavily nerfedGunner now has his bottom path, buff other bullet-type towers!Shotgunners projectiles have been adjusted to be more likely to hit, and scale properly with fast forward.The Tank has had some slight pricing chang...Read full article on Community Announcements (KalN)Patch NotesOfficial
The "Refinement" Update!
Welcome to the Refinement update!This update is technically the first half of the quote "bigger release on its way", with refinements, new towers and visual improvements to boot. Coming updates will have larger adjustments.New Content:Tower Tech TreeAdded a Tower Tech Tree, now you have to research towers in proper order!Pressing the "Tower Tree" button on the top of the page returns you to the regular Tower Select mode. ( Small sneak peek of some of the new towers ;) )Zombie "Info" panelNow also with a much better info system for zombies:In this example you can see what the "zombie" is strong against (taking 67% less damage from bullets) and weak against (taking 50% more damage from explosions).Changelog:Additions:* Big Addition, Hidden enemies!Added ShotgunnerAdded FlamethrowerAdded DinghyAdded Fire resistanceAdded display for all resistancesAdjustments:Adjusted: Upgrade menu, added not-so-descriptive descriptions for each upgrade.Adjusted: Certain towers to have hidden detection, along with their stats adjusted to compensate for having hidden detection.Adjusted: The first two (, and for now only) difficulties have been nerfed in difficulty, giving the player more cash per wave.Nerf: Overall weakening and rebalancing of Gunner.Nerf: Overall weakening and rebalancing of Laser unit.Nerf: Overall weakening and rebalancing of Commando.Thank you for reading :DRead full article on Community Announcements (KalN)Patch NotesOfficial
The "In Between" Update!!
Welcome to the "In Between" Update!! This is a small update leading up to the bigger release on its way, currently development is slowing down for a couple of weeks, expected to pick back up at the end of may leading to a big release somewhere next month! New Content!! Enjoy the two new "Heavy" towers added to the game, the Commando and Tanker, as well as the new (sort of) scenic day and night cycle!{STEAM_CLAN_IMAGE}/45602158/dbd47474e6ee65b6471d8a2b190c72e5dd18acdd.png Sneak peek screenshot! Changelogs: Additions / Tweaks: Added 2 towers Added day and night cycle Reworked shadows to be more "pretty" (from blob to "drop" shadows) Balance changes: Nerf: Snipers "Railgun" upgrade now deals less damage (800 -> 600) Nerf: Gunners "Better Rifle" upgrade now costs more (1050 -> 1250) Gameplay change: Wave 0 now has a skip timer set to 5 seconds on every difficulty, meaning you can skip almost instantly on starting a new game.Read full article on Community Announcements (KalN)






