⚡ x86 PC Virtualization ● 4 Ports Available

DOSBox Pure & JS-DOS Emulation

Authentic 16-bit and 32-bit DOS PC gaming sandboxed inside modern WebAssembly emulators.

DOSBox and JS-DOS provide faithful real-mode and protected-mode x86 IBM PC virtualization inside the browser. Utilizing dynamic binary translation (dynarec) compiled to WebAssembly, these runtimes simulate the Intel 386/486 CPU, VGA/SVGA mode 13h graphics, Sound Blaster Pro sound cards, and Roland MT-32 MIDI synthesizers directly in client RAM.

Engine Architecture x86 CPU & Sound Blaster 16 Virtualization
Build Compiler / Toolchain DOSBox Pure / JS-DOS compiled via Emscripten
Browser Runtime Target x86 Dynamic Recompiler WASM + Web Audio
Performance Benchmark Solid 60–70 Hz CRT emulation with synchronized audio buffers

Key Architectural Advantages

✓ 100% accurate cycle timing and authentic Sound Blaster audio
✓ Built-in virtual keyboard overlays for mobile and tablet browsers
✓ Zip-based virtual floppy/CD-ROM file system mounting
✓ Instant save-state snapshots and exportable saves

Playable DOSBox Pure & JS-DOS Emulation Titles

1-Click direct origin ports verified and playable in your browser.