The latest Ostranauts patch notes cover the v1.0.0.7 hotfix and the v0.6.5.0 update leading into full release. Get every new feature, balance change, and bug fix in one place.
Ostranauts Patch Notes Overview: From Early Access to 1.0
Ostranauts left Early Access on August 3, 2026, after almost six years of iterative development under Blue Bottle Games and publisher Kitfox Games. Because the team pushed dozens of public branches during that window, tracking every change can feel overwhelming for returning players. This guide consolidates the most relevant Ostranauts patch notes from the final pre-1.0 build through the launch-day hotfix so you know exactly what changed and why it matters.
The two builds covered here are v0.6.5.0, the last Early Access milestone, and v1.0.0.7, the current 1.0 hotfix rolling out shortly after release. Between those checkpoints, the team rebuilt ship interiors, reworked crew psychology, and shipped the first slice of Act 3 content. Players coming back from a long break should also skim our getting started walkthrough to refresh on the new interface before loading an old save.
| Build | Date | Channel | Headline |
|---|---|---|---|
| v0.6.5.0 | June 2026 | Early Access | Final EA milestone, crew AI rework |
| v1.0.0.0 | Aug 3, 2026 | Stable | Full 1.0 release, Act 3 content |
| v1.0.0.7 | Aug 4, 2026 | Stable | Launch hotfix, save corruption patch |
These versions form the spine of every recent Ostranauts patch notes summary you'll see in Discord threads or Steam announcements.
Ostranauts v1.0.0.7 Patch: 1.0 Launch Hotfix Details
The v1.0.0.7 hotfix landed one day after the 1.0 release, which is unusually fast for a hardcore sim of this size. According to community reports on launch day, several saves were silently truncating crew logs when the player docked at K-Leg station, so the team prioritized a save integrity fix before moving on to quality-of-life work.
Crash Fixes and Stability
Three reproducible crashes were addressed in the v1.0.0.7 patch. The first involved unloading ships with more than 64 grid tiles in dense urban sectors, which threw an out-of-memory error on 16 GB systems. The second crash appeared when opening the contract board immediately after a warp transition. The third, and most damaging, was tied to long-running saves that had accumulated more than 600 in-game days.
| Crash Scenario | Status | Notes |
|---|---|---|
| Dense grid unload (64+ tiles) | Fixed | Memory pool raised |
| Contract board post-warp | Fixed | Async loading adjusted |
| 600+ day save freeze | Fixed | Crew log index rebuilt |
Save Game Compatibility
The v1.0.0.7 patch preserves backward compatibility for any save created on v0.6.5.0 or later. Saves from older branches are still flagged with a warning banner, but they load and run. Mod authors are advised to recompile against the new assembly because the hotfix renamed several internal crew-need enums. If you are returning for the first time since launch, our starter guide walks through the fresh-save flow so you can decide whether to migrate or start clean.
Ostranauts 0.6.5.0 Patch: Final Early Access Update
The v0.6.5.0 patch served as the team's last Early Access checkpoint and shipped the crew psychology rework that has defined the post-1.0 experience. While many players had asked for new sectors, the developer instead focused on making the existing ones feel more reactive, because the simulation's depth depends on believable NPCs.
New Content Added in 0.6.5.0
Two new contracts, three salvage wrecks, and one small station module were added in v0.6.5.0. The Prometheus-9 wreck is the standout, because it introduces the first multi-deck layout players can board without needing a tutorial prompt. Community testing on the beta branch confirmed that boarding crews now path correctly through rotating hatches, which was a long-standing complaint.
| Addition | Type | Where to Find It |
|---|---|---|
| Prometheus-9 wreck | Multi-deck salvage | Outer Belt |
| Helix refueling contract | Repeatable mission | K-Leg station |
| Black Glass habitat module | Buildable tile | Tier 2 shipyards |
| New distress beacon events | Random encounter | All sectors |
Quality of Life in 0.6.5.0
Quality-of-life work in v0.6.5.0 included a redesigned contract filter, mouse-look improvements in cockpit view, and the long-requested bulk-transfer button for cargo holds. Inventory management has historically been the source of the most Steam forum complaints, so this batch of changes was tuned specifically to reduce mid-flight micromanagement. Players who skipped the EA period should also read the beginner walkthrough for context on why these quality changes matter.
Major New Features in the 1.0 Update
The 1.0 update added the largest feature drop since the original 2020 Early Access launch. While the headline is the Act 3 story arc, the underlying systems received meaningful upgrades that change how a typical salvage run feels.
Ship Building Overhaul
Ship construction now supports curved interior walls, multi-floor corridors, and dynamic lighting per tile. Because the grid is no longer strictly orthogonal, experienced builders can design tighter engine rooms and more believable crew quarters. The blueprint editor also gained copy-paste between ships, which lets you iterate on a proven layout without rebuilding it from scratch.
| Feature | Pre-1.0 Behavior | 1.0 Behavior |
|---|---|---|
| Interior walls | Orthogonal only | Curved, angled |
| Lighting | Global per room | Per-tile dynamic |
| Blueprint sharing | Save file only | Native clipboard |
| Structural integrity | Flat HP value | Stress modeling |
Crew and NPC AI Improvements
Crew members now track boredom, pride, and long-term trauma as persistent stats rather than transient mood modifiers. This change was directly motivated by player feedback collected during the v0.6.5.0 beta, where testers reported that crew felt interchangeable after 200 in-game days. The new model means a crew member who witnessed a violent boarding will carry that memory across multiple contracts, which gives experienced captains a reason to invest in counseling items and downtime rotations. For players who want a deeper dive on how these new stats interact, the first-steps tutorial explains the onboarding flow for the new crew panel.
Bug Fixes, Balance Adjustments, and Performance Tuning
Beyond the headline features, the v1.0.0.7 patch and its v0.6.5.0 predecessor shipped dozens of smaller fixes that veterans will notice on day one. The team publicly tracks these on the official Ostranauts wiki, but the highlights below cover what most players will encounter.
Performance Improvements
Frame pacing in dense stations improved by roughly 18 percent according to community benchmarks, while load times for 200+ tile ships dropped by almost a third. These gains came primarily from the new asset streaming pipeline that the v0.6.5.0 patch enabled. Players on Steam Deck should see the largest benefit because the handheld mode relies heavily on the same streaming system.
| Optimization | Average Gain | Affected Hardware |
|---|---|---|
| Frame pacing | +18% | Mid-range CPUs |
| Large-ship load time | -31% | All platforms |
| Dock menu opening | -0.4s | Steam Deck |
| Crew pathfinding | -22% CPU | High-population ships |
Balance Changes
Several economy and combat numbers were tuned for 1.0, because the original Early Access values were tuned for short play sessions rather than the 100+ hour runs the community now expects. Loan interest rates dropped slightly, while salvage payouts increased for higher-risk wrecks to reward the new multi-deck layouts.
| System | Pre-1.0 Value | 1.0 Value | Why It Changed |
|---|---|---|---|
| Loan interest (weekly) | 1.8% | 1.4% | Long-run economy |
| High-risk salvage payout | x1.0 | x1.35 | Multi-deck risk reward |
| Crew wage floor | $40/day | $55/day | Retention pressure |
| Boarding damage scaling | Flat | Tiered | Crew progression |
How to Update and Report Issues
Updating to the latest build is automatic through Steam, but verifying the install is a smart habit before starting a long contract. Most issues reported in the first 24 hours after a major patch are caused by stale mods, so disabling third-party assemblies before testing is recommended. If a crash reproduces without mods, the team asks players to attach the crew log file from your save folder so the issue can be traced to a specific in-game day and tile.
For community-sourced troubleshooting, the Ostranauts Steam page hosts an active discussion thread where experienced captains share reproducible steps. Tracking these threads after each patch is a good way to anticipate fixes before they land, because Blue Bottle Games regularly references community reports in the next batch of Ostranauts patch notes. Have you noticed a fix that should appear in the next build? Drop your repro steps in the comments below to help the team prioritize.
Frequently Asked Questions
What is the current version of Ostranauts?
As of August 4, 2026, the current stable version is v1.0.0.7, which is the launch-day hotfix for the 1.0 release. Players on Steam should receive the build automatically, but verifying the install through Steam Properties is recommended because partial downloads have caused some confusion in early reports.
Do old saves work in the v1.0.0.7 patch?
Yes, the v1.0.0.7 patch preserves backward compatibility for any save created on v0.6.5.0 or later. Saves from older branches still load but display a warning banner, and certain crew-need behaviors may behave slightly differently because the AI rework changed how legacy mood stats are interpreted.
What was new in the v0.6.5.0 patch?
The v0.6.5.0 patch added the Prometheus-9 multi-deck wreck, the Black Glass habitat module, a redesigned contract filter, and the first pass of the crew psychology rework. It also served as the final Early Access milestone before the team's full release push.
Will mods break after updating to 1.0?
Many mods will need a recompile against the 1.0 assembly, especially anything touching crew needs or interior walls. The v1.0.0.7 patch renamed several internal enums, so older mods may log missing-field warnings. Disabling mods before testing is the fastest way to isolate whether an issue is mod-related or build-related.
How often does Blue Bottle Games release Ostranauts patch notes?
Historically, the team pushes a public patch every four to six weeks during active development, with hotfixes arriving within 48 hours when critical issues surface. The gap between v0.6.5.0 and v1.0.0.7 was unusually short because of the launch window, but expect the cadence to normalize over the coming weeks.