Your smartphone is your character! Eon Altar brings modern technology to the social experience of couch co-op gaming. Voice your character, choose which secrets to keep and what lies to tell. Gather your friends, order the pizza and descend to the depths of the Eon Altar!
User reviews:
Very Positive (10 reviews) - 90% of the 10 user reviews in the last 30 days are positive.
Very Positive (337 reviews) - 93% of the 337 user reviews for this game are positive.
Release Date: Jun 22, 2016

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This game requires a free phone/tablet controller app to play, see more details below.

Buy Eon Altar: Episode 1

Episode 1: The Battle for Tarnum

Buy Eon Altar: Season 1 Pass

Will include Episodes 1-3 as they are released


Recent updates View all (28)

March 21

Update #18 - Cloud Save is Here!

Welcome to Update #18! Today we bring you the refreshing overcast skies of Steam Cloud Saves. No longer do you need to manually schlup your save files from computer to computer: Steam will do it for you! It will even work across both OSX and Windows!

Note that Steam only syncs on game app open and close, so if you have multiple computers you want in sync, ensure you run the game once and close it on all machines. If you've taken the time to duplicate your file across multiple machines, Steam will prompt you asking which file to keep. After that, there's nothing else to do but let Steam do its thing!

A few other fixes include some reported save blockers, and the upgrade code to fix existing saves with the reported issues.

You can find the full update notes here.

Thanks for playing, and as always, thank you for your feedback! Let us know how it goes!

2 comments Read more

February 23

Update #17 - Portable Save Files and Episode 3 Fixes

This update brings a much requested feature: the ability to drag and drop save files into and out of your save folder from machine to machine. This will help folks transfer save files wherever they like (assuming it's under the same Steam user account), and also help with support. This is a step towards full Steam Cloud Saves for Eon Altar, coming soon!

It also contains a large number of fixes for Episode 3 content. Some folks ran into bugs that blocked their progress in Episode 3, and we've nailed each one that's been reported so far in this update. No need to worry, existing save files are covered and will also get these fixes! Thanks to our amazing community for help here, it's been awesome!

  • The Mysterious Stranger should now load correctly on reload, including for existing saves that were broken previously, though it may take him a few moments to find you. He will be much, much harder to lose, despite maybe wanting to drop him in a mine shaft.
  • You can now leave or re-enter the Paths of Madness after reloading the level. Existing save files should also no longer exhibit this issue.
  • You should no longer get stuck in the Pit Mine on one side of the bridge unable to continue. Existing save files should also no longer exhibit this issue.

Finally, we've made Episode 3 better all around, with a few more visuals, some combat re-tuning, and more optimizations to make the levels run faster.

A full list of the issues addressed can be found here.

5 comments Read more


“Eon Altar is an interesting, innovative, and modern spin on the idea of pen and paper RPGs, but using the advantage of a digital medium. It's a hybrid of both, a combination, arguably the best of both worlds.”
TotalBiscuit, The Cynical Brit

“Overall, there’s a really great story being told with Eon Altar, and it’s told in an creative and interactive way.”
Brash Games

“Purchase it, play it, and see how multiplayer RPG's should be made these days.”
Keen Gamer

Mobile Enhanced

Eon Altar requires each player to download the free Controller App to play, available on the App Store and Google Play.

Local Wifi is required to connect the Controller Apps to the Eon Altar core game. Internet Access is not required.

iOS: iPhone 4s or later, iPad Mini, iPad 2 or later. Requires iOS8 or later.
Android: 512mb of RAM and Jellybean 4.1 or later.


Purchase the Season Pass to unlock Episode One, Episode Two and Episode 3 (available now).

For those who've yet to try Eon Altar, we now allow folks play the Prelude for free! Check out the demo link on the side of the store page to grab the game and try it right now!

  • Chapter 1 - The Portal Obsinate
  • Chapter 2 - The Wolf of Yriel
  • Combat Arena - The Hall of Penitence

  • Chapter 1 - Together We Fall
  • Chapter 2 - The Safehold
  • Combat Arena - The Cultist Rising

  • Chapter 1 - The Paths of Madness
  • Chapter 2 - Hall of the Builders

About This Game

A Mobile-Enhanced Local Co-op RPG for 1-4 Players

Explore the lavish dungeons and tunnels that stretch below Tarnum Fortress and conquer dozens of unique quests and challenges. Prove your worth on a tactical battlefield, and overpower your foes with strategy, magic and martial prowess. The Eon Altar’s defenders are many and they are deadly.

Choose to cooperate with your allies or deceive them. Engage them in player to player dialogue to expose the truth in myths and legends, and guide your hero to their ultimate destiny or defeat.

Your smartphone is your character

  • Receive personalized secret thoughts from your character direct to your smartphone
  • Choose whether to share personal information with your friends or use it against them
  • Upgrade and manage your character without interrupting other players
  • Control the action from your smartphone with context sensitive information

Couch co-op role-playing game

  • Connect your mobile devices to a central platform to coordinate tactics and movement
  • Play together with up to three friends, or play by yourself in solo mode
  • Work with your friends, or betray them as you race to fulfill your destiny
  • Defeat legendary enemies in exciting tactical turn-based combat

An epic story of friendship and betrayal

  • Experience an epic quest in nine episodic installments filled with action and surprise
  • Explore a deep, compelling, and original sword-and-sorcery fantasy world
  • Interact with enemies, allies, and your friends by acting out your character's lines
  • Make impactful choices and forge your own destiny

Fully-realized, immersive gameplay experience

  • Gorgeous art and atmospheric environments
  • Intricate, ancient, and original fantasy setting
  • NPCs are fully voice acted, but you voice your own character
  • Epic soundtrack by composer Tom Salta, known for his work on the Halo series

An ancient, malevolent presence stirs within the depths of the Eon Altar, and only a small band of heroes can stop it from consuming the world. What mysterious force brought you here together? Are you strong enough to stand up to your gods?

System Requirements

Mac OS X
    • OS: Windows 7
    • Processor: 2.4 GHz Dual Core
    • Memory: 4 GB RAM
    • Graphics: 512 MB NVIDIA GeForce 9800 / ATI Radeon HD 2600 XT
    • DirectX: Version 9.0
    • Storage: 4 GB available space
    • Sound Card: Direct X compatible
    • Additional Notes: Local WiFi Connection
    • OS: Windows 10
    • Processor: 3.1 GHz Quad Core
    • Memory: 8 GB RAM
    • Graphics: 512 MB NVIDIA GeForce 9800 / ATI Radeon HD 2600 XT
    • DirectX: Version 11
    • Storage: 4 GB available space
    • Sound Card: Direct X compatible
    • Additional Notes: Local WiFi Connection
    • OS: OS X 10.8.5
    • Processor: Intel Core i5 @ 2.5Ghz
    • Memory: 4 GB RAM
    • Graphics: Intel Iris 1536 MB
    • Storage: 4 GB available space
    • Additional Notes: Local WiFi Connection
    • OS: OS X 10.11 or newer
    • Processor: Intel Core i7 @ 3GHz
    • Memory: 8 GB RAM
    • Graphics: Nvidia GTX 750M / or AMD Radeon R9 M370X with 1024 VRAM
    • Storage: 4 GB available space
    • Additional Notes: Local WiFi Connection
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Very Positive (10 reviews)
Very Positive (337 reviews)
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