U.F.O. K.O. Tower Defense
U.F.O. K.O. Tower Defense: Place lasers, missile launchers, sniper turrets, and use combat strategies such as airstrikes and the space ray to repel waves of alien invaders in this sci-fi tower defense game.
Offers
What are keyshops?Multipacks (1)
About U.F.O. K.O. Tower Defense
ABOUT THIS GAME
Your planet is being invaded. We are receiving reports that sightings of up to 10 different craft are being seen in the skies all over the world. There is no evidence that these craft are alien, but we can't rule it out. You have been assigned the task of defending the planet and have been given access to 6 unique weapons to defend 20 tactical locations. Access to a direct line to HQ for orbital and air support has additionally been granted to help you fight off the hostile forces and save the day. The fate of the world is in your hands. Will mankind be assimilated?
FEATURES
- 23 Steam Achievements- Show your progress on your steam profile
- 20 Levels - Play through 20 levels in 4 different environments
- 10 Alien Craft - We cant confirm these craft are alien, but we can't rule it out
- 6 Upgradable Turrets - Upgrade your turrets to Increase effectiveness
- 2 Special Abilities- Call in airstrikes and orbital attacks from HQ
- Replayability - Go back for 3 stars or reset in-game progress
Game details
Game details
Age ratings
Game modes
Languages
U.F.O. K.O. Tower Defense price history
Lowest tracked price: $1.99 (Jul 7, 2026) · current best: $1.99.
U.F.O. K.O. Tower Defense reviews
75% positive reviews all-time.
U.F.O. K.O. Tower Defense — frequently asked questions
Where can I buy U.F.O. K.O. Tower Defense at the cheapest price?
Right now the cheapest offer for U.F.O. K.O. Tower Defense is $1.99 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
What is the lowest price U.F.O. K.O. Tower Defense has ever been?
The lowest price KingsPrice has tracked for U.F.O. K.O. Tower Defense is $1.99 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
How can I get U.F.O. K.O. Tower Defense at a discount?
Create a free price alert on this page and KingsPrice will email you when U.F.O. K.O. Tower Defense drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
System requirements
Minimum
- Requires a 64-bit processor and operating system
- OS: Windows 10 - 64 bit
- Processor: intel core i3-3220U 3.3 GHZ
- Memory: 4 GB RAM
- Graphics: OpenGL 2.0 compatible, ATI, Nvidia or Intel HD
- DirectX: Version 11
- Storage: 300 MB available space
Recommended
- Requires a 64-bit processor and operating system
