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HARWELL: Mars IndustriesNewsv0.19.3 Patch
Game update

v0.19.3 Patch

HARWELL: Mars Industries · published 3 Mar 2026, 13:30 UTC · build 22178477

All newsPlayers around this dateRead on Steam

TL;DR Players should now see HUGE performance improvements, up to +150% on low-end devices, and there's MOAR graphs.

New Features

  • Market multi-threading for improved performance

  • Centralized ProfitCalculator class for consistent profit calculations

  • Player profit tracking with actual purchase costs and sales revenue

  • Financial graphs added to the financial tab

  • Custom monitoring statistics in the engine for AI and market information

  • Moddable colony names

Improvements

  • Thread manager now auto-detects number of CPU cores and sets threads accordingly

  • Optimized AI timers to dynamically start/stop based on activity state

  • Centralized color overlay to building manager

  • CanvasItem caching and optimizations

  • Removed await get_tree().process_frame in _process() calls

  • Added static types for various variables

  • Optimized lobby syncing for better performance

  • Max inventory values centralized into a constant

  • Colony spawning changed to every 10 sols (previously 20)

  • Minimum company value and stock price updated to 1

  • Stock menu now sorted by peer ID for consistency across players

  • Construction tooltip formatting centralized and cleaned up

  • Profit tooltip hidden for HQ buildings

Bug Fixes

  • Fixed error spam when player was offline on Steam or had Steam closed

  • Fixed issue where peers wouldn't receive interest notifications

  • Fixed sync issues with player credit ratings in stock menu

  • Fixed credit ratings not displaying properly for non-host players

  • Fixed issues with player inventories

  • Sound effect fixes

More from HARWELL: Mars Industries

Other announcements

All news
Community8 Jul 2026Dev Diary #1 - The Building BlocksHello, Pioneers, and welcome to the first Harwell: Mars Industries dev diary. If you're new here, hello! I’m Caleb Houlding, solo developer of Harwell: Mars Industries, along with publisher Aquila Interactive. It's great to have you here! Today we’re looking at the building blocks of Harwell: Mars Industries, and we'll be showcasing the implementation of various buildings, along with their reso…Community28 Apr 2026New Publisher Announcement!Mars is open for business! Developer Caleb Houlding is partnering with publisher Aquila Interactive to announce Harwell: Mars Industries , a sci-fi economic strategy game set on Mars, coming 2027. This is the start of an exciting journey, and we'd love for you to head to the Store page, wishlist and come along with us for the ride in our Discord . What is Harwell: Mars Industries Each corporati…Game update13 Apr 2026v0.20.4 PatchNew Features · Friends system with Steam and Nakama integration — add friends, see their status (online, in-game, in-lobby), and invite them directly to games. · Beautiful Shadows toggle in Graphics settings for the new lighting pipeline. · Game end screen redesign with full-screen overlay, financial graphs (revenue, expenses, company value, profit, debt), per-resource production tables, and co…