Games Like Pax Historia: 7 Alternate History Games Worth Playing in 2026

Pax Historia earned its blowup: type what your nation does, and AI plays the rest of the world back at you. But after your tenth run of rewriting 1936, most players start looking for a different angle on the same obsession — a new scale, a new era, or just a timeline that doesn't reset when the session ends. This list covers the seven games we'd actually recommend, including what each one does better than Pax Historia and where it falls short.

One honest note up front: this site makes Altworld, which opens the list. We've kept the comparisons factual — every game here is genuinely worth your time, and several are better than Altworld at specific things, which we say plainly.

1. Altworld — live inside the timeline (free to start)

Altworld flips the Pax Historia formula. Instead of commanding a nation from above, you're a person inside the timeline: a Viking-age trader in Birka, a dockhand in plague-year Bristol, a rail worker in revolution-era Chihuahua — or anyone in a world you forge from a text pitch. You act in plain language, and a simulation engine updates canonical world state (factions, prices, rumors, relationships, locations) before a single line of narration is written.

That structure is the point: your what-if compounds instead of drifting. The debt from turn 3 still exists at turn 40. The rumor you planted resurfaces at the worst time. Runs save, snapshots branch, and multiplayer sessions let friends join the same persistent world through an invite link — so a timeline can be a shared project, not a solo chat.

• Best for: living the divergence at street level; persistent, saveable timelines; playing with friends
• Weaker than Pax Historia at: nation-scale map warfare — there is no border-painting layer
• Price: free to start (10 guest turns, no account), daily free Candles, optional top-ups

2. AltHistAI — guided AI what-if scenarios

AltHistAI (althistai.com) is the most direct 'what if' machine on this list: pick a scenario — Columbus in 1492, the Battle of Hastings, WWI, WWII, the American Civil War — nudge the variables, and let the AI simulate how the timeline unspools. It's lighter than Pax Historia, more of a scenario explorer than a game you inhabit, but that makes it perfect for quick sessions and for testing a divergence before you commit a longer campaign to it elsewhere.

• Best for: fast, guided what-if simulations of famous turning points
• Trade-off: less persistent state and less player agency than a full sandbox
• Price: free to try in the browser

3. Chronostates — type a what-if, get a playable timeline

Chronostates starts with a single question — 'what if X?' — and generates a divergent timeline you can steer, with events generated from your timeline's accumulated history and choices. It sits somewhere between an interactive book and a strategy game, and it's built by a tiny team that ships fast. If your favorite part of Pax Historia is watching second-order consequences ripple outward, Chronostates distills exactly that.

• Best for: turning one sentence into a branching alt-history narrative
• Trade-off: narrative-first — don't expect deep mechanical systems
• Price: free to start in the browser

4. Hearts of Iron IV — the WWII sandbox standard

No AI narration, no natural-language orders — and still the deepest 'rewrite 1936' machine ever built. Paradox's WWII grand strategy game remains the reference point for alternate-history war gaming, with a mod scene (Kaiserreich, The New Order) that is effectively an alternate-history literature of its own. If Pax Historia got you into the genre, HOI4 is the rabbit hole it was pointing at.

• Best for: deep, systemic WWII-era warfare and the best alt-history mods in existence
• Trade-off: steep learning curve; scripted events rather than AI improvisation
• Price: paid (Steam), frequent sales

5. Europa Universalis IV — four centuries of divergence

EU4 covers 1444–1821 and is the purest 'every campaign is an alternate history' game Paradox makes: a Byzantine restoration, a Norse New World, a unified Japan in 1600. Like HOI4 it's systems-driven rather than AI-driven, but the sheer breadth of eras and nations makes it the natural next step when you want your what-ifs to span centuries instead of a single war.

• Best for: long-arc divergences across the early modern world
• Trade-off: dated UI, DLC-heavy; no natural-language play
• Price: paid (Steam), deep sales and a subscription option

6. Epoch: Alternate History — free indie grand strategy

Epoch (on itch.io) is a free, ambitious indie grand strategy sim that lets you start from a wide range of historical points and watch nations merge, split, and evolve — with simulated citizens underneath. It's rough in places, but it's free, moddable in spirit, and closer to Pax Historia's 'sandbox history' energy than any AAA title.

• Best for: free nation-scale sandboxing without a subscription
• Trade-off: indie polish; smaller systems than Paradox titles
• Price: free

7. Websim's alternate history makers — the weird lab

Websim hosts community-built AI toys, including alternate-history map makers and timeline generators. Nothing here is a full game, but as a scratchpad for divergence ideas — flags, maps, newspaper front pages from timelines that never happened — it's a uniquely fun companion tool to every other entry on this list.

• Best for: quick creative artifacts from your what-if ideas
• Trade-off: toys, not games — no persistence or progression
• Price: free to play with

Which one should you pick?