Eye of Syn CD Key
PC price comparison · Globin Games · Nov 12, 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.
Lowest final price
at Steam · Standard Official
Historical low: $9.99 on November 13, 2026
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Eye of Syn price history
Historical lows by store
- Steam$9.99
About 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.Read more
Eye of Syn system requirements
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
- 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
Eye of Syn key FAQ
+What is a Eye of Syn CD key?
A Eye of Syn CD key is a digital code that unlocks the game on a PC platform such as Steam. After redeeming it, you download the game directly from that platform and it stays in your library.
+What is the cheapest price for Eye of Syn?
The cheapest Eye of Syn key right now costs $9.99 at Steam. We compare 1 offers from 1 store, and the price already includes payment and service fees.
+What is the historical low for Eye of Syn?
The lowest price we have recorded for Eye of Syn is $9.99 on November 13, 2026. Check the price history chart to decide whether to buy now or wait for the next sale.
+Is it safe to buy a Eye of Syn key?
Buying from an official store such as Steam, GOG or Epic Games is always safe. Key resellers are often cheaper but sell keys second-hand, so check the region lock and buyer protection before you buy. Every offer on GameKeyDeal is labelled as official or reseller.
