Quick answer

Yes, IRON NEST: Heavy Turret Simulator had a free demo. It launched during Steam Next Fest in June 2026 (the demo's release date is reported as June 15, 2026) and became the #1 most wishlisted game and the #2 most played demo by unique players of that festival. The official press kit states the demo remains available on Steam after the full release, but its current availability has not been independently re-confirmed since launch — check the Steam page before you plan around it.

What the demo includes

The demo contains a portion of the core loop with two reported modes: Chill and Challenge. Both modes let you operate the turret the way the full game does — map work, ballistic calculation, loading, gunlaying, and firing — but the handcrafted story campaign is part of the full release, not the demo.

Players reported an average of 3+ hours of playtime in the demo. That figure is community-tested and reflects the launch-window demo build; the exact content in your region or build may differ.

Demo vs full game: what changes

| Aspect | Demo | Full game | | --- | --- | --- | | Price | Free | $19.99 (25% launch discount early on) | | Modes | Chill + Challenge (reported) | Campaign + challenge modes, leaderboards | | Story campaign | Not included | Handcrafted campaign in alternate-history 1920s Spain | | Scope | Core firing loop | 30 ammo types, 100+ medals, 15 regions (per Steam page) | | Steam AppID | 4300500 (demo) | 2950790 (base game) |

The full game also ships with a day-one patch (Build 1547, August 7, 2026) and has since received further patches — the demo build and the current full-game build are different builds.

Does demo progress carry over?

This has not been confirmed. Whether demo saves or unlocks transfer to the full game is 待确认 (unconfirmed) as of August 12, 2026. If this matters to you, check the official Steam discussions before starting.

Is the demo still available?

The official press materials said the demo "remains permanently available" on Steam after launch. However, store-page availability was not independently re-verified on August 12, 2026, and demos are sometimes delisted after their festival window. Treat the demo as available until you confirm the green "Download Demo" button on the official Steam page.

Where to get the demo safely

  • The official Steam page for the demo (AppID 4300500) via the Steam client.
  • The official Steam store page links the demo when it is live.

Download only through Steam or official storefronts. No third-party mirror is an official source.

Sources and update note

Demo playtime and mode details are community-tested and labelled as such. Store facts come from official pages. Last checked August 12, 2026.