Lost:Antinomy

Fantasy choice RPG with daily events and shifting allegiances

IMaiIna · Released Mar 24, 2024

Reviews: Very Positive; 88% of 1,077
Recent reviews: Not enough recent
Players: 0; daily peak, Nov 7, 2026
Steam Deck: Verified
Last update on Steam: 9 months ago; Jan 28, 2026
Minimum PC: GeForce GTX 760; 1 GB RAM · 0.5 GB disk; Full requirements

What is Lost:Antinomy?

You play a hero transported to another world in a choice-driven fantasy RPG and dating sim. Each day brings random events where left-or-right decisions affect your attributes, relationships, and position between rival factions. Death begins a new timeline, and an in-game editor lets you create and share stories.

For you if...

+you like fantasy stories shaped by relationship choices
+you enjoy managing character attributes through daily events
+you want to create and share custom stories

Not for you if...

−you prefer direct action to reading and making choices
−you dislike random events and starting new timelines

How many players finish Lost:Antinomy?

78% of Steam players have unlocked «這就是...結局?», the achievement for finishing the main story.

Share of everyone who owns the game on Steam, including those who barely played it. Updated weekly.

Screenshots and trailer

Lost:Antinomy system requirements

Minimum: GeForce GTX 760, 1 GB RAM, 0.5 GB of disk space.

As published by the developer.

Can my PC run Lost:Antinomy?

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Minimum

OS: Windows 10, 11
Processor: Intel Core i3 3.0 GHz
Graphics: NVIDIA GeForce GTX 760 / AMD Radeon R9 280X
Memory: 1 GB RAM
Storage: 500 MB available space

Does Lost:Antinomy have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does Lost:Antinomy run on Steam Deck?

Verified Yes, Verified by Valve: it works on Steam Deck out of the box.

All functionality is accessible with the default controller configuration
In-game text is legible on Steam Deck
Default graphics settings perform well on Steam Deck

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Achievements: 53
Steam features: Workshop, Family Sharing
Languages: Text only: Simplified Chinese, Traditional Chinese.

Does Lost:Antinomy 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 25, 2026. How to filter AI games on Steam