Area 51 Defense is an action-packed survival shooter with a deadly arsenal, monstrous enemies and explosive action! With the official 1.0 release we added new survival maps and weapons for the player's delight. There is also an in-built map editor for all those crawing for more playable content.


Mysterious forces are amassing near the air force base of Area 51. You are a lone soldier fending off these supernatural invaders.


  • Use an arsenal of 8 deadly weapons
  • Eliminate various monsters and mutants
  • Get kill streaks and special combos
  • Discover different power-ups to help your survival
  • Shoot the gas bottles to create a trap for the invaders
  • Experiment with the in-built level editor
  • Gain the highest score and climb up the Steam Leaderboards
  • And try to survive as many waves as you can!
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Hello, soldiers!

We have a long-awaited update for the game, fixing the compatibility issues and adding new improvements to the gameplay. We have especially tackled the reported issue of antivirus software falsely tagging our game as a trojan or malware. These problems should now be fixed.

  • Fixed online high score bug.
  • Only player kills now add to the score, instead of having score increased from all the turret and AI soldier kills.
  • Level editor has received a massive overhaul.
  • All new maps for the Survival game mode.
  • Additional Gauntlet Maps added, which you can replace the existing survival maps with.
  • Updated level tiles in the editor, and heaps of new tiles added.
  • Interior levels added into the editor and into playable maps.
  • Highlighted hits for the explosive barrels when they get shot.
  • Added lights on the pickups, so now they can be seen better in the dark.
  • Lighting system in the editor received a big update.
  • Fellow AI bots have received an update, and they now move around more.
  • Fixed a lot of software compatibility issues.

We hope that you will explore the level editor, make new maps and share them with your friends and other community members. Remember to save a safe copy of the existing maps when you edit them!

Happy hunting!


We'll include a few new screenshots to this post - these are from the builds in September and October:

a51d sept2

A51D SeptsSS 6


A51D SeptUpdateSS 2

harri jokinen area51 mainmenunew

A51D SeptUpdateSS 4

-Harri J.

Version 1.2.2 released!

Version 1.2.2 released!


A new update for the third anniversary of Kalaban and the upcoming Halloween sale 2020.

Area 51 Defense - Update #13

Area 51 Defense - Update #13


New update with tons of updates. Major update #13 We've done tons of small tweaks all over! Go give the game a spin, and see for yourself!

Area 51 Defense - Update #12

Area 51 Defense - Update #12


New update with tons of updates, such as tweaked enemy AI and movement speeds, improved visual fx and fixed Steam achievements.

Birthday Sale 2020

Birthday Sale 2020


We are celebrating our games and gamedev team with a new special offer.

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Area 51 Defense - Old Early Access Version

Area 51 Defense - Old Early Access Version

Full Version

This was the full release of the game, before the updated Alien Seed Games version. NOTE! There is no support for this version, as it differs greatly...


Looks great!

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GameRealmMadness Creator

Thank you! We have worked very hard to enhance the game beyond its original Early access launch. The game is being actively worked on, and we like to hear feedback from the fans :)

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