Download OpenSmash-Ultimate & Verify SHA-256

Q: Should I download OpenSmash-Setup.exe or OpenSmash.exe?

In v0.3.0-alpha.3, both files have the exact same byte size (72,353,388 bytes) and identical SHA-256 digest (100e41cb62feabba16563990abbea1e1112def73a8098fa604b9b3369165c218). Download OpenSmash-Setup.exe for a brand-new installation; download OpenSmash.exe when replacing the launcher inside an existing OpenSmash or WindowSmash folder.

Q: Why are there .sha256 files attached to each GitHub release?

Files such as OpenSmash-Setup.exe.sha256 (87 bytes) and OpenSmash.exe.sha256 (81 bytes) are plain-text checksum sidecars published by the release workflow so users and update scripts can verify binary integrity.

Q: Do I need to manually download ssbu-runtime-6de107db53.zip or llvm-9.0.0-win64-portable.zip?

No. Those archives belong to the standalone ssbu-recomp pipeline and are fetched automatically by Install SSBU.bat. If you are installing the unified OpenSmash-Ultimate build on Windows, you only need OpenSmash-Setup.exe.

Every published asset size, download count, and SHA-256 digest from OpenSmash-Ultimate/OpenSmash-Ultimate (v0.3.0-alpha.3) and OpenSmash-Ultimate/ssbu-recomp, paired with a local browser WebCrypto verifier.

Download OpenSmash-Setup.exe All GitHub Releases

Latest: v0.3.0-alpha.3
72.4 MB Setup EXE
63,514 total downloads
68 verified SHA-256 hashes

Competitive Smash Ultimate bracket crowd and 60 FPS tournament stage pacing

Verify any downloaded file in your browser

Every download link on OpenSmash-Ultimate Wiki points straight to GitHub’s release CDN under github.com/OpenSmash-Ultimate/. Drop your downloaded .exe or .zip below to verify its SHA-256 against all 64 binary releases (63,514 total downloads) locally via WebCrypto:

Verify your download locally

Drop OpenSmash-Setup.exe, OpenSmash.exe or any ssbu-runtime ZIP to compute its SHA-256 in your browser against all 64 binary releases across OpenSmash-Ultimate/OpenSmash-Ultimate and OpenSmash-Ultimate/ssbu-recomp. Zero bytes leave your PC.

Waiting for a file or SHA-256 digest.

Drop your downloaded EXE or ZIP hereor click to select · 100% local WebCrypto SHA-256

1. Unified OpenSmash-Ultimate releases (OpenSmash-Ultimate/OpenSmash-Ultimate)

For 64-bit Windows 10 and Windows 11, download OpenSmash-Setup.exe from v0.3.0-alpha.3 (November 4, 2026, 21:23 UTC). Notice that in v0.3.0-alpha.3, OpenSmash-Setup.exe and OpenSmash.exe are the exact same dual-mode binary (72,353,388 bytes, SHA-256 100e41cb62feabba16563990abbea1e1112def73a8098fa604b9b3369165c218): running it in a fresh folder launches the bootstrap setup wizard, while running it inside an existing install opens the OpenSmash Launcher.

Release	Asset (Direct GitHub Link)	Exact Size	Downloads	SHA-256 Digest
v0.3.0-alpha.3 November 4, 2026	`OpenSmash-Setup.exe`	72.4 MB 72,353,388 B	10,225	`100e41cb62feabba16563990abbea1e1112def73a8098fa604b9b3369165c218`
v0.3.0-alpha.3 November 4, 2026	`OpenSmash-Setup.exe.sha256`	87 bytes 87 B	100	`97023b08bc5669512c96d5f14e1419857984a8269f776f29fc616c55705bf63c`
v0.3.0-alpha.3 November 4, 2026	`OpenSmash.exe`	72.4 MB 72,353,388 B	2,770	`100e41cb62feabba16563990abbea1e1112def73a8098fa604b9b3369165c218`
v0.3.0-alpha.3 November 4, 2026	`OpenSmash.exe.sha256`	81 bytes 81 B	63	`6bba3f09e23d12dc7b704c8be7ed47434bdeeb52abb1f402afa217f35b5e2d5b`
v0.3.0-alpha.2 November 4, 2026	`OpenSmash.exe`	72.3 MB 72,331,978 B	145	`7e4b714207874f733696e0cf5279a448bf2f76fd672bfa4e8eaa2abab734715d`
v0.3.0-alpha.2 November 4, 2026	`OpenSmash.exe.sha256`	81 bytes 81 B	17	`5d6635682eb46207f379ac0f01807287b92b5b302daa46bea4199db6ecc760af`
v0.3.0-alpha.1 November 4, 2026	`OpenSmash.exe`	72.3 MB 72,331,982 B	152	`cc7840c0391b0898d9489e34c036233430c845e18702f8b26963ae0c5661103b`
v0.3.0-alpha.1 November 4, 2026	`OpenSmash.exe.sha256`	81 bytes 81 B	23	`5321e8cc92393b8837d4150d847f9333a4eb9bd4ea822f33500279299bfff350`

2. Linux, SteamOS & Apple silicon macOS source download

Linux (x86-64 / Steam Deck) and Apple silicon macOS (M1+, macOS 14.5+) build natively on your machine from the unified repository rather than using the Windows .exe launcher:

git clone https://github.com/OpenSmash-Ultimate/OpenSmash-Ultimate.git
cd OpenSmash-Ultimate
# On Linux / SteamOS Desktop Mode:
bash opensmash-launcher.sh     # GUI setup, mods & Game Mode launcher
# Or terminal installer:
bash install-windowsmash.sh

# On Apple silicon macOS (14.5+):
bash "Install WindowSmash.command"

3. Standalone ssbu-recomp runtime & toolchain assets (OpenSmash-Ultimate/ssbu-recomp)

Before merging into OpenSmash-Ultimate/OpenSmash-Ultimate, OpenSmash-Ultimate/ssbu-recomp published 61 automated releases (50,019 total asset downloads). When someone runs Install SSBU.bat in the standalone ssbu-recomp archive, the script fetches these verified components automatically; all 61 hashes are loaded into the verifier above and listed in full on the changelog:

Tag	Asset & Role	Exact Size	Downloads	SHA-256 Digest
runtime-6de107d October 21, 2026	`ssbu-runtime-6de107db53.zip` Latest prebuilt NVN-to-Vulkan host runtime (fetched automatically by Install SSBU.bat)	4.9 MB 4,919,177 B	15,075	`6432fd0aab76811032683e4e148631187ab8e5db06ecfeda74fa0ed71eeb9c8e`
llvm-9.0.0-portable October 20, 2026	`llvm-9.0.0-win64-portable.zip` Portable LLVM/Clang 9.0.0 Win64 compiler archive for C module builds	69.0 MB 68,962,987 B	14,505	`0e0c34046589a73efef3e2a4c06335815681afbc7c883b665cdbed98669a22e3`
ffmpeg-8.1.3-lgpl October 20, 2026	`ssbu-ffmpeg-8.1.3-lgpl-win64.zip` LGPL FFmpeg 8.1.3 Win64 movie/audio fallback package	3.3 MB 3,255,968 B	14,022	`47f0bb9ec3e1d3095625bb3272e7005d203b33e415d475fe051e9fe66ea69171`

4. Historical WindowSmash source tags (OpenSmash-Ultimate/WindowSmash)

OpenSmash-Ultimate/WindowSmash published 2 source-only alpha tags before merging into OpenSmash-Ultimate/OpenSmash-Ultimate:

Tag	Published	GitHub Release	Notes
v0.2.0-alpha.1	October 18, 2026	Source tag on GitHub	Source-only tag published prior to the October 21, 2026 unification into OpenSmash-Ultimate.
v0.1.0-alpha.1	October 18, 2026	Source tag on GitHub	Source-only tag published prior to the October 21, 2026 unification into OpenSmash-Ultimate.

Verify SHA-256 from PowerShell or Terminal

You can also verify OpenSmash-Setup.exe from your operating system shell without third-party utilities and compare the output with 100e41cb62feabba16563990abbea1e1112def73a8098fa604b9b3369165c218 (or the published OpenSmash-Setup.exe.sha256 checksum file):

# Windows PowerShell
Get-FileHash .\OpenSmash-Setup.exe -Algorithm SHA256

# Linux
sha256sum OpenSmash-Setup.exe

# macOS
shasum -a 256 OpenSmash-Setup.exe

Smash PC controllers & adapters

OpenSmash-Ultimate and WindowSmash support up to 8 concurrent players via SDL3, XInput, and native Wii U / Switch GameCube USB adapter polling (both Windows HID and Zadig WinUSB drivers, with analog L/R triggers and rumble):

Hardware	Best For in OpenSmash-Ultimate	Input Path & Latency Notes	Link
Mayflash 4-Port GameCube Controller USB Adapter	4-port GameCube controller play	Switch to Wii U mode for native 4-port GameCube input + rumble (second grey USB plug)	View on Amazon
Nintendo Switch Pro Controller	Native positional ABXY layout	Matches Switch button positions out of the box via SDL3 (`[device switchpro]`)	View on Amazon
GameSir Cyclone 2	Low-latency 1000 Hz wireless Smash	Zero-drift TMR sticks, microswitch face buttons, XInput & Switch SDL3 modes	View on Amazon
8BitDo Ultimate 2 Wireless	Desktop & SteamOS handheld dock	TMR sticks, charging dock, 2.4 GHz dongle + Switch / XInput mode switch	View on Amazon
Sony DualSense	PlayStation pad (`[device ps5]`)	Full SDL3 support with configurable per-device rumble and deadzone in `controllers.ini`	View on Amazon
Xbox Wireless Controller	Zero-setup Windows 10/11 XInput	Works natively for players 1–4; set `layout = labels` or `style = gamecube` if desired	View on Amazon

As an Amazon Associate, this site earns from qualifying purchases.

Nintendo GameCube controller showing octagonal analog gate, C-stick, L/R analog shoulder triggers and A/B/X/Y layout — Native GameCube controller input via 4-port Wii U USB adapters (WinUSB / HID) with analog L/R triggers

Desktop gaming PC workstation with dual monitors and tempered glass chassis — Windows 10/11 x64 desktop build host for AArch64-to-C static recompilation, Direct3D 11 and Vulkan

Macro view of a multi-core x86-64 processor and integrated GPU silicon package — AVX2 / SSE4.2 CPU compiler pipeline and 40,000-shader ahead-of-time cache

Common questions

Should I download OpenSmash-Setup.exe or OpenSmash.exe?

In v0.3.0-alpha.3, both files have the exact same byte size (72,353,388 bytes) and identical SHA-256 digest (100e41cb62feabba16563990abbea1e1112def73a8098fa604b9b3369165c218). Download OpenSmash-Setup.exe for a brand-new installation; download OpenSmash.exe when replacing the launcher inside an existing OpenSmash or WindowSmash folder.

Why are there .sha256 files attached to each GitHub release?

Files such as OpenSmash-Setup.exe.sha256 (87 bytes) and OpenSmash.exe.sha256 (81 bytes) are plain-text checksum sidecars published by the release workflow so users and update scripts can verify binary integrity.

Do I need to manually download ssbu-runtime-6de107db53.zip or llvm-9.0.0-win64-portable.zip?

No. Those archives belong to the standalone ssbu-recomp pipeline and are fetched automatically by Install SSBU.bat. If you are installing the unified OpenSmash-Ultimate build on Windows, you only need OpenSmash-Setup.exe.