Alien Shooter TD was released on January 13, 2017 by Sigma who also developed the game. Alien Shooter TD is an isomorphic tower defence game.

This released from the developer expands on earlier ones with an old style tower defence idea.

Unusual is the need to reload ammo, units do not have unlimited resources. Money can be taken from dead enemies to buy more ammo.

This game also lets the fallen remain, so there is a growing pile of the dead as the battle unfolds. The game has lots of explosions as part of the game action.

The game features lots of upgrades, weapons, items and classes. There is a wide range of maps.


Operating SystemWindows 7 or better
CPUi5-2500 or better
Memory4 GB or more
Hard Drive Space500 MB
Graphics HardwareDX9: 512 MB
NetworkBroadband Internet Connection Required