What is this?
openOMSI is a from-scratch recreation of the bus simulator OMSI 2, written in Rust with a modern wgpu renderer (Metal/Vulkan/DirectX 12). It loads and plays the original OMSI 2's maps, buses and mods, but contains no game content of its own.
openOMSI is a from-scratch recreation of the bus simulator OMSI 2, written in Rust with a modern wgpu renderer (Metal/Vulkan/DirectX 12). It loads and plays the original OMSI 2's maps, buses and mods, but contains no game content of its own.Is this a full game or a launcher plus engine?It's a complete replacement game engine plus a launcher: the launcher finds or sets your OMSI 2 folder, manages mods and updates, and then runs the actual driving simulation itself, reading the original's maps and vehicle files.
It's a complete replacement game engine plus a launcher: the launcher finds or sets your OMSI 2 folder, manages mods and updates, and then runs the actual driving simulation itself, reading the original's maps and vehicle files.How do I get it running?Download the build for your platform from the Releases page, unpack it into a writable folder (not Program Files), start the executable, and let the launcher auto-detect your OMSI 2 installation (or point it at the folder manually in Setup). Then pick a map, bus and duty, and drive.
Download the build for your platform from the Releases page, unpack it into a writable folder (not Program Files), start the executable, and let the launcher auto-detect your OMSI 2 installation (or point it at the folder manually in Setup). Then pick a map, bus and duty, and drive.Do I need to own the original OMSI 2 to use this?Yes, it is mandatory. openOMSI needs an installed copy of OMSI 2 (Steam or retail) with its stock maps and buses - it will not start without one, and the original installation folder is never modified.
Yes, it is mandatory. openOMSI needs an installed copy of OMSI 2 (Steam or retail) with its stock maps and buses - it will not start without one, and the original installation folder is never modified.Is this ready to use right now, or still early?It's an early release: expect bugs, and things may be missing, broken, or change between versions. The project tracks problems on GitHub Issues and Discord.
It's an early release: expect bugs, and things may be missing, broken, or change between versions. The project tracks problems on GitHub Issues and Discord.Which platforms does it run on?Windows (x64/ARM64), macOS (Apple Silicon or Intel), Linux (x64/ARM64), and Android 8.0+ (arm64), plus a separate dedicated server build for Linux and Windows.
Windows (x64/ARM64), macOS (Apple Silicon or Intel), Linux (x64/ARM64), and Android 8.0+ (arm64), plus a separate dedicated server build for Linux and Windows.What data does the diagnostics export actually send?The exported diagnostics package includes the program, system, graphics card/driver/settings, controller info and the last game's map and bus, but explicitly excludes folder paths, names, chat, LAN codes or addresses - and nothing is sent automatically, you attach it yourself.
The exported diagnostics package includes the program, system, graphics card/driver/settings, controller info and the last game's map and bus, but explicitly excludes folder paths, names, chat, LAN codes or addresses - and nothing is sent automatically, you attach it yourself.Why rewrite OMSI 2 instead of just using the original?The goals are a modern 64-bit, multithreaded engine with streaming/texture loading on worker threads (no 2GB limit, no single-thread stalls), plus LAN multiplayer and a dedicated server - while behaving exactly like the original for existing content.
The goals are a modern 64-bit, multithreaded engine with streaming/texture loading on worker threads (no 2GB limit, no single-thread stalls), plus LAN multiplayer and a dedicated server - while behaving exactly like the original for existing content.Can I play multiplayer with existing mod maps?Yes, but both players need the host's map: a map placed directly in the OMSI 2 folder isn't shared, while one installed through the Mods page is passed to joining players automatically.
Yes, but both players need the host's map: a map placed directly in the OMSI 2 folder isn't shared, while one installed through the Mods page is passed to joining players automatically.Is VR supported?Yes, there's an OpenXR-based virtual reality mode with its own settings and controls, documented separately for Windows.
Yes, there's an OpenXR-based virtual reality mode with its own settings and controls, documented separately for Windows.What if my graphics card doesn't support Vulkan?openOMSI automatically falls back from Vulkan to DirectX 12 and then OpenGL; you can also manually pick the graphics API in Settings → Graphics.
openOMSI automatically falls back from Vulkan to DirectX 12 and then OpenGL; you can also manually pick the graphics API in Settings → Graphics.What are similar projects?bgfx, Yakumo, OpenRCT2, pt-pc, iw4L, luanti, JoltPhysics, skate-3-rust-engine
bgfx, Yakumo, OpenRCT2, pt-pc, iw4L, luanti, JoltPhysics, skate-3-rust-engineWhich topics is it in?wgpu, vr, d3d12, virtual-reality, vulkan-api, multiplayer, metal, game-engine, simulation, game, gaming, rust
wgpu, vr, d3d12, virtual-reality, vulkan-api, multiplayer, metal, game-engine, simulation, game, gaming, rust