Reentry - An Orbital Simulator

[Asid]

Reentry has been updated to 0.99.82 - Retro planning, Fuel Balance, Improvements
Wed, 3 September 2025



This is a massive update with fixes and improvements learned from my own playthroughs, and corrects bugs reported by players. The list is long, so be sure to check the full patch notes in the bottom.

The main intent of the update is to improve trajectory control in Mercury, Gemini and Apollo. This includes new tools for retrograde burn planning in Mercury and Gemini, and small improvements to the Apollo Maneuver Planner, Trans-Lunar Injection and Trans-Earth Injection tools.

The update also aims to improve the general flow of the game like improved fuel balancing, removal of various dev-flags, game mechanic fixes, and visual/rendering improvements.

Note: If you experience new issues related to this update, please report them. You can revert back the a previous build using the Steam betas tab for the game. Most recent rollback option: Reentry Version 0.99.81


What's new in 0.99.82?



Read on...

[Asid]

Reentry has been patched to 0.99.83 - CM ECS lesson fixes, Retroburn Planner fix
Fri, 5 September 2025



This is mostly a hot fix patch for the Retroburn Planners to properly set the Time to Retrofire timers when clicking the Orange SET button, and a blocking bug in the last mission of the Apollo 13 Historical Mission - a bug that came when I improved the CMC NO ATT logic.

In addition it contains an overhaul of the Command Module ECS lessons, and some minor updates to the Mercury and Gemini Save States.

The patch also implements a color differentiation between the Interaction Highlighter and the Attention Highlighter.

Interaction Highlighter vs. Attention Highlighter:
The Attention Highlighter is used to show where something is, without the need of interacting with it. Previously they had the same color, making it hard to distinguish between the two. This could result in accidental interactions with switches that was simply just highlighted to show you where something is, without having to move it. The Attention Highlighter is now of a lavender color compared to the ice blue color of the Interaction Highlighter.

All of the four CM ECS lessons has been updated to use this Attention Highlighter to better show you where switches, instruments and gauges are.

Patch notes:

  - Hot fix: Mercury and Gemini Retroburn Planner: Fix for the orange SET button to automatically update Time To Retro timers.

  - Hot fix: Apollo 13 (Historical): Fixes to the last Reentry mission to use V40 N20 to remove the NO ATT flag

  - Added Pe and EI nodes on the TEI tools entry trajectory predictor

  - Switch/component attention system: Highlight switch color if lesson only wants to show where something is now has a different color than the one that wants you to move a switch to a different position (interact vs. attention)

  - Added the Attention Highlighter system to Apollo (previously it was only in Mercury and Gemini)

  - Refined the Apollo Command Module ECS: O2 academy lesson

  - Refined the Apollo Command Module ECS: PSC academy lesson

  - Refined the Apollo Command Module ECS: H2O academy lesson

  - Refined the Apollo Command Module ECS: COOLANT academy lesson

  - Refined the Apollo Lunar Module Powered Descent academy lesson

  - Improved Mercury Save State with some additional internal system values

  - Improved Gemini Save State with some additional internal system values