Eon Altar

A local co-op fantasy RPG controlled through your smartphone

Flying Helmet Games · Released Jun 22, 2016

Reviews: Very Positive; 85% of 602
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 30, 2026
Steam Deck: Untested
Last update on Steam: 9 years ago; Oct 6, 2017
Minimum PC: HD 2600 XT; 4 GB RAM · 4 GB disk; Full requirements

What is Eon Altar?

This is an isometric, episodic RPG about confronting an ancient threat beneath Tarnum Fortress. You explore dungeons, complete quests, and fight turn-based battles with weapons and magic, either alone or with up to three friends.

For you if...

+you enjoy speaking your character's lines aloud with friends

Not for you if...

−you want reflex-driven combat rather than tactical turns

What players say

85% of 602 reviews are positive

Earlier players praise the couch co-op setup and tactical battles. Recent reviewers report that the required smartphone controller app is no longer available or supported, leaving them unable to play.

Screenshots and trailer

Eon Altar system requirements

Minimum: HD 2600 XT, 4 GB RAM, 4 GB of disk space.

As published by the developer.

Can my PC run Eon Altar?

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Minimum

OS: Windows 7
Processor: 2.4 GHz Dual Core
Graphics: 512 MB NVIDIA GeForce 9800 / ATI Radeon HD 2600 XT
Memory: 4 GB RAM
Storage: 4 GB available space
DirectX: Version 9.0
Notes: Local WiFi Connection

Does Eon Altar have co-op or multiplayer?

Yes: co-op split-screen; PvP split-screen. It also has a single-player mode. With Remote Play Together, one copy is enough to play the local modes online with friends.

Does Eon Altar run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows, macOS
Achievements: 41
Steam features: Cloud saves, Family Sharing, Trading cards
Languages: Full audio: English.

Does Eon Altar use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam