Explore the boundaries of time and space in this amazingly unique tower defense game! The psychological sci-fi storyline follows your main character as he leaves his body and goes to "pathspace" to defend his planet from a relentless invasion. The more time he spends away from his body, the more the nature of his mission begins to change--and his mind begins to face new challenges altogether! Is there anything that you'd sacrifice everything to defend? Find out in Immortal Defense!