Mature Content Description

The developers describe the content like this:

ESRB TEEN: Blood, Language, Partial Nudity, Sexual Themes, Alcohol And Tobacco, Violence

About This Game

 Make History.

One man fights for himself. One man fights for all.

Be one of the first to experience Eternal, an intoxicating journey into the nature of humanity.

“The Greatest Game No One Knows About” returns with a passion, improved by years of player feedback since its first release.

Eternal is a ground-breaking fully-animated cinematic masterpiece.

Features:

∙ 100 Steam Achievements
∙ 77 Collectable Character Cards
∙ In-Game Snapshots
∙ Single-player & Local Multiplayer Fighting Game
∙ Hours of Director's Commentary and Behind-the-scenes
∙ Detailed Character Library
∙ Multi-Chapter SRPG Tactics Game
∙ Extensive Art Gallery
∙ Hidden Comedy Scenes

100% compatible for play on Steam Deck.

Recommended Steam Deck settings:
∙ Steam Menu → Settings → Display → Put Deck to sleep → Sleep after 20 minutes or more, or Never (for longer story scenes)

∙ Troubleshooting any game startup issues:  Uninstall game, reinstall, hold power button down to force shutdown of Steam Deck at end of game download (if necessary; skip if unnecessary), power on again, go to game settings → Properties → Installed files → Verify integrity of game files, allow it to reacquire missing files, and start game.

∙ We released a major update that vastly improved the game loader on 8/14/25, but which required starting a new game save for any game saves made before that date.

A note from the developer:

We do absolutely zero advertising, and zero marketing. We offer this game at 90% off during each and every Steam sale, to maximize exposure. We depend solely on you, the Player, to spread knowledge of our hidden gem. We hope you love it a speck as much as we do.