Start a new "Custom Game" save. Turn on "Infinite Oxygen" just to test the new build for an hour, then dial the difficulty back up for your real run. Final Verdict The latest version of Astroneer doesn't add a new planet for free players, but it does something better: it polishes the rough edges. The game has never run smoother, and the Custom Games tool gives the community unlimited replayability.
As of April 2026, the current stable build is (often referred to as the “Custom Games & Quality of Life” update). Here is everything you need to know before you hop back into your shuttle. The Big Feature: Custom Games are Here The headline feature in the latest patch is the official Custom Games Mode . Gone are the days of struggling with file editing to change the rules. astroneer latest version
While version 1.28 tries to be backwards compatible, the new Custom Games menu won't apply to old worlds, and the train fixes only work on newly placed rails. If you load your 200-hour save from 2023, expect some weird floating resource bugs. Start a new "Custom Game" save