Update 4.2 is out now!

New feature: COI Hub integration * Added a Mod Manager that lets you browse mods from COI Hub and install/update them directly in-game. * Maps from the Hub can be browsed, downloaded, and updated directly in-game. * Blueprints from the Hub can be browsed and downloaded directly in-game from the blueprints manager. * All these features currently do not require a login or account creation. New feature: Modular ramps * Added modular road ramps built with a new place & drag tool. * Modular ramps can have any length and a height of 1 or 2, and unlike bridges, all vehicles can pass over them, small vehicles can pass under them. * The original ramps are now obsolete. New train features and improvements * Added T1 and T2 universal wagons that can carry any product (unit, loose, or fluid), at 3/4 of a dedicated wagon's capacity. * Added new train track pieces: corner ramps, grade transitions, and 2-tile S-bends. * Waypoints can now restrict which trains may path to or through them, using configurable allow and deny rules, including filtering by wagon product type. * Trains can now perform switchbacks autonomously on bidirectional tracks: navigating to a dead end, stopping, and reversing back out. * Added train network tutorials covering networks, linked storages, advanced train line rules, station groups, and troubleshooting. Performance * New product renderer makes product rendering itself 10-20x faster, cutting product draw calls and memory dramatically. A benchmark map went from 23 to 78 FPS, and real saves see solid 20-50% FPS gains too. See Captain's diary #56 for details. * Optimized terrain physics processing for avalanches and large-scale mining, up to ~9x faster on heavy avalanche and mining scenarios. * Optimized train pathfinding goal selection at stations, making pathfinding more than 2x faster on train-heavy saves. Improvements * All 100+ product 3D models have been remade with better graphics. * Reworked construction preview and blueprint graphics: new shaders with blueprint grid lines and improved depth perception. * Inspector windows now remember their positions. * Office and Captain's Office bonuses now activate and deactivate with a delay via a charge that fills while needs are satisfied and drains otherwise, preventing rapid on/off toggling. * Added a detailed per-recipe breakdown to the product statistics window, showing production and consumption by individual machine recipe with stacked bar charts and share percentages. * Added /60 per-minute toggles to the Maintenance, Food, and Fuel statistics tabs. * Drag placement now works with surfaces and decals, and a new "Hold key to drag-place" accessibility option (off by default) only starts drag-placing while the grid-fill key is held. * Bridge building improvements: height lines and a height-delta readout for a clearer sense of depth, faster validity arrows and previews, higher performance, and bug fixes. * Product search now covers more buildings, including Food Market, Hospital, Captain's Office, Research Lab, Shipyard, Sorter, Cargo Depot, and train station modules. * Construction and deconstruction now obey the target zone's vehicle bans instead of the construction zone's, so vehicle restrictions you set up are respected. * Shipyard now shows its storage buffers (non-empty cargo only). * Settlement waste, biomass, and recyclables module inspectors now show the amount collected in the last month. * The rocket launch pad inspector now shows its logistics zone. * Vehicles now show their unreachable destination even when no specific entities are targeted (useful for tree harvesters). * Moved the entity tooltip icon into the inspector title bar. * Loading progress is now shown in the Windows taskbar, with a blink on completion. * Improved the tutorial window with a per-message section navigation list, a maximize button, and improved styling. Tutorial messages now appear in a consistent order across all games and saves. * Upgraded rendering engine to Unity 6.3.19 (modders may need to update). Fixes * Fixed notifications lingering for destroyed entities. * Fixed an error when panning the camera with the tower area overlay open. * Fixed a train pathfinding requeue bug that could stall pathfinding on very large networks with many trains. * Fixed deleted stations still showing lines when a train reported an unreachable destination. * Fixed tenders triggering their own refueling events; they are now grouped with their locomotive to calculate a combined fuel level. * Fixed train network loading jobs completing all alignments even when enough was already loaded (unless an alignment is needed for fuel). * Fixed a "last leg" issue where a busy train's path-improvement tasks prevented it from ignoring critical sections right before a station. * Fixed air friction overflow on very long trains (50+ wagons). * Fixed products being rendered at wrong positions on reversed train cars. * Fixed product source statistics losing precision when small quantities were consumed from large product pools. * Fixed Fix32 overflow in settlement internet provider and transformer calculations. * Fixed vehicles using stale height after the terrain changed beneath them from mining, dumping, or flooding. * Fixed train track construction and Unity cost issues: double-counted deconstruction materials, wrong Unity cost, and redundant commands during area removal. * Fixed being unable to continue building from a 45-degree sloped track end that had a pillar. * Fixed several connectivity manager errors and issues when vehicle pathability capabilities changed. * Fixed an error when starting a drag-placement after previews were cleared mid-drag. * Fixed a fast click and drag placing only one entity instead of the dragged copies. * Fixed frosted glass rendering after a screen resize. * Fixed several file-handling issues for CrossOver (Mac) users: the max auto-save limit being ignored, a successful recovery-save export reported as failed, and new games wrongly reporting the folder as non-writable. * Fixed the maintenance statistics tab showing "+" instead of "-" for consumption, plus several chart selection, hover, and year-range display issues.