Skip to content
Geeky Alien
Eye of Syn

Screenshots

Eye of Syn screenshot 1
Eye of Syn Gameplay Trailer trailerWatch trailer on Steam ↗

Eye of Syn

Globin Games · Published by Globin Games · Official site ↗

Content notice: The game features mild fantasy violence and verbal/textual descriptions of an apocalypse scenario.

Last updated 28 Sept 2026

Summon and combine demons to battle against zombie hordes in Eye of Syn, a lane based tower defense game where you must protect two dimensions at once. Uncover dark secrets and powerful demon synergies as you try to save Earth from an eldritch apocalypse.

Free to PlayComing SoonDJCTQ 14

Free

View on Steam

Prices can lag the live Steam store — always confirm before buying.

Strategy · 2026 · More free games

In Eye of Syn, strategize your demon summoning to defend both dimensions from zombie hordes. Unveil dark secrets and harness powerful synergies as you fight an eldritch apocalypse.

About this game

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.

System Requirements

Will my PC run this? →

Minimum

Minimum:
  • Requires a 64-bit processor and operating system
  • OS: Windows 10 64-bit or later
  • Processor: Dual Core CPU
  • Memory: 8 GB RAM
  • Graphics: Radeon HD 7730 or better, GeForce GT 640 or better
  • Storage: 6 GB available space
  • Sound Card: Windows compatible audio device

Recommended

Recommended:
  • Requires a 64-bit processor and operating system
  • OS: Windows 10 64-bit or later
  • Processor: Dual Core CPU
  • Memory: 8 MB RAM
  • Graphics: Radeon HD 7730 or better, GeForce GT 640 or better
  • Storage: 6 MB available space
  • Sound Card: Windows compatible audio device

Supported Languages

English

We use strictly necessary cookies to run this site. We don't currently set any analytics or advertising cookies. See our Cookie Policy for details.