Play online Xeno Tactic TD games for free here on vitalitygames.com. Defend your tower by purchasing different war weapons and placing them strategically so enemies may not pass by. Towers can be upgraded to increase their power. Crate a path and try to use your tower as much as possible. Upgrade the key points towers and don't let any enemies escape your defended zone. Towers can be upgraded to increase their powers. First select a build tower on the map. Click on upgrade damage, or range or speed button of the towers to increase. Have fun and good luck!