# A free, open-source Pax Historia alternative

> Open Historia is a free, open-source, browser-playable alternative to Pax Historia: natural-language orders, 20+ scenarios, campaign memory, and no credit meter.

Canonical: https://historia.aliveville.com/pax-historia-alternative

[Open Historia](https://historia.aliveville.com/)

# A free, open-source Pax Historia alternative

If you like the idea of an AI-adjudicated alternate-history sandbox but want one you can open in a browser, inspect, and run on your own AI provider — that's what Open Historia is.

[Play in the browser — free](https://historia.aliveville.com/play)[Compare](https://historia.aliveville.com/pax-historia-alternative#compare)

### Plain-English grand strategy

Raise an army, broker an alliance, fund a rebellion — type the order and the Game Master works out what happens on the map.

### 20+ scenarios

Historical, modern, alternate-history, and fictional presets — pick a nation and start a campaign in seconds.

### Rewindable timeline

Every turn is a snapshot. Rewind to any decision and branch a new alternate history from there.

## Open Historia vs. Pax Historia

Pax Historia is a polished hosted platform with a large community. Open Historia is a smaller open-source experiment — the honest trade-offs:

Cost model

Free to play — bring your own AI provider key, a local model, or the shared free gateway. No credit meter.

Hosted platform where play runs through its own service.

Source

MIT-licensed and public on GitHub.

Closed-source platform.

Where it runs

In the browser — nothing to install. Guests play with local saves; optional sign-in adds cloud saves.

Hosted web and mobile apps.

How you play

Type orders in plain English; an AI Game Master adjudicates each turn into map, diplomacy, and timeline changes.

Create, share, and play community-built AI sandbox worlds.

## Where it's still behind

Open Historia is a held experiment, not a finished platform. The map detail and campaign pacing are prototype-grade, and there is no multiplayer or community scenario marketplace yet. If you want the mature product, Pax Historia is it — if you want the open, hackable, no-credits version to play with or build on, try this one.

## Your keys, your provider

Pick Anthropic Claude, OpenAI, Google Gemini, DeepSeek, a local OpenAI-compatible model, or the shared free gateway on setup. Provider keys stay in your session and go only to the provider you chose.

## Start an alternate history

Pick a scenario, choose a nation, give your first order.

[Play Open Historia](https://historia.aliveville.com/play)