Eye of Syn

Welcome to Eye of Syn
Eye of Syn is a 2D tower defense game set in an earth ravaged by a deadly zombie virus. You play as Lucretia, a young girl who made a deal with the eldritch demon Argus in exchange for powers that let her fight back against the zombies.
This proved to be a big mistake, however, as it split her soul between two realms: post-apocalyptic earth and the horrifying extra-dimensional land of Syn. Now you must defend yourself on both of these planes. Collect monstrous summons, strategize your way through relentless hoards of twisted zombie foes, and find Argus before it's too late.

Unlock your Potential with Demon Buffs 
Place your Demons in the correct spots to unleash powerful demon buffs! Each demon has a buff zone, and when another demon is placed there, they both mutate into stronger variations of themselves. Strategize with over 30 combinations! You can uncover and track these synergies in the Codex.

Engage in Dual-Dimension Combat
Battle against relentless hordes of zombies as you swap between the two dimensions of Syn and Earth. Equip power-ups that trigger when you switch realms – allowing for more customization in combat. 
Swap abilities activate when the bottom left bar is full and you swap dimensions. Activate Blood Rain to summon a storm of lighting damaging zombies at random.

Syn abilities activate when you click the bottom right icon and then click on the map. Activate Lightning Strike to summon a bolt of lightning in a specific location.