neoOMSI: OMSI 2 recreated in RustOMSI 2, recreated from scratch in Rust. Full compatibility with every map, bus and mod, on a modern 64-bit engine for Windows, macOS, Linux and Android.
Early release, expect bugs.
An open-source reimplementation that targets the observable behavior of OMSI 2.2.032.
Community maps, buses, splines and scripts run as expected, without manual conversions.
Multithreaded tile streaming, background texture decompression and no arbitrary memory ceilings.
Native hardware acceleration through wgpu: DirectX 12 on Windows, Metal on macOS, Vulkan on Linux.
Native builds for Windows, macOS, Linux and Android, built automatically for every release.
Scenario setup, duty and timetable selection, vehicle previews and controller configuration.
Host multiplayer sessions headless. Maps and timetables are simulated without a GPU.
Add-ons live in a separate overlay, so trying and removing them never touches your OMSI 2 files.
No proprietary binaries or copyrighted assets. GPL-3.0-or-later, developed in the open.
Automated tests guard compatibility, subsystem by subsystem.
neoOMSI contains no game content. It plays on the maps, vehicles and files of an installed copy of OMSI 2 and does not start without one.
Get the build for your system from the download page and unpack it into a folder of your own.
On the first start, point the launcher to the folder with maps and Vehicles. Nothing in it is changed.
Pick a map, a bus and a duty in the launcher.
Choose a bus. Every bus in your OMSI 2 folder, sorted by maker, with its liveries and a 3D preview.
Pick a line and a tour. Lines and tours come straight from the map's timetable.
Set the time and the weather. Any date and season, live METAR weather, or a cycle that changes while you drive.
Drive with the navigator. Your speed, the next turn and the next stops, with your delay at a glance.
More in the FAQ.
neoOMSI is a free, open-source recreation of the bus simulator OMSI 2, written from scratch in Rust. It plays the maps, buses and mods of an installed OMSI 2 on a modern 64-bit engine with native builds for Windows, macOS, Linux and Android.
Yes. neoOMSI contains no maps, vehicles or other game content. It reads them from an installed copy of OMSI 2 and does not start without one. On the first start, you point the launcher to the OMSI 2 folder that contains the maps and Vehicles folders.
Yes, with neoOMSI. OMSI 2 itself only runs on Windows, but neoOMSI has native macOS builds for Apple silicon (M1 or newer) and Intel Macs on macOS 11 or newer. Copy your OMSI 2 folder to the Mac and point neoOMSI to it.
No. neoOMSI only reads your OMSI 2 folder. Add-ons go into a separate Mods folder next to neoOMSI, or onto the Mods page of the launcher, so trying or removing them never touches your OMSI 2 files.
neoOMSI started as a fork of openOMSI and is now developed independently. Both are Rust recreations of OMSI 2 that need an installed copy of the game. neoOMSI is licensed under GPL-3.0-or-later instead of MIT and verifies its behavior against OMSI 2.2.032 with a documented process and regression tests.
neoOMSI reads them straight from your OMSI 2 folder and never changes it.
