OpenSmash-Ultimate

Release History & Upstream Changelog

Chronological ledger of all 66 releases across OpenSmash-Ultimate/OpenSmash-Ultimate, OpenSmash-Ultimate/WindowSmash, and OpenSmash-Ultimate/ssbu-recomp (63,514 total asset downloads checked November 13, 2026).

Download v0.3.0-alpha.313.0.5 setup guide
  • Latest: v0.3.0-alpha.3
  • 66 total releases
  • 63,514 downloads
  • Checked November 13, 2026
Platform-fighter esports tournament venue packed with spectators watching a main-stage bracket match
Competitive Smash Ultimate bracket crowd and 60 FPS tournament stage pacing
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

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

Since uniting WindowSmash and ssbu-recomp on October 21, 2026, OpenSmash-Ultimate/OpenSmash-Ultimate has published 3 unified alpha releases totaling 13,495 binary asset downloads as of November 13, 2026. Note that after tagged releases, incremental updates also land continuously on GitHub’s main branch via the launcher’s Settings → Update tab:

v0.3.0-alpha.3November 4, 2026, 21:23 UTC · 13,158 asset downloads
  • Online rollback on by default: Quickplay and 1v1 Local Wireless room matches run with SSBU_RB rollback netcode enabled out of the box (can be toggled off in Settings → Online → Rollback netcode or with SSBU_RB=0).
  • Controller assignment fix (#145): Fixes online rollback controller routing so each player uses their own physical controller.
  • New one-file installer: Introduces OpenSmash-Setup.exe alongside OpenSmash.exe to download the repository, run setup, open the launcher, and create desktop/Start shortcuts automatically.

Published assets:

  • OpenSmash-Setup.exe (72.4 MB / 72,353,388 B · 10,225 downloads · SHA-256 100e41cb62feabba16563990abbea1e1112def73a8098fa604b9b3369165c218)
  • OpenSmash-Setup.exe.sha256 (87 bytes / 87 B · 100 downloads · SHA-256 97023b08bc5669512c96d5f14e1419857984a8269f776f29fc616c55705bf63c)
  • OpenSmash.exe (72.4 MB / 72,353,388 B · 2,770 downloads · SHA-256 100e41cb62feabba16563990abbea1e1112def73a8098fa604b9b3369165c218)
  • OpenSmash.exe.sha256 (81 bytes / 81 B · 63 downloads · SHA-256 6bba3f09e23d12dc7b704c8be7ed47434bdeeb52abb1f402afa217f35b5e2d5b)
v0.3.0-alpha.2November 4, 2026, 15:21 UTC · 162 asset downloads
  • Symmetric NAT direct connections (#139): Learns peer source ports, maps router ports via UPnP / NAT-PMP / PCP, predicts sequential NAT ports, retries live during matches, and shows router diagnostics on F1.
  • Online Quickplay rollback & matchmaking (#142): Adds round-trip input delay scaling, fixes spurious "Lost player" dialogs, and resolves Elite Smash matchmaking stalls.
  • Vulkan fight speed parity (#131) & savestates (#129, #132): Brings Vulkan fight frame rates in line with Direct3D 11 and reduces savestate overhead.
  • Unlimited CSS (#130), SSF2 keyboard (#126) & memory fix (#127): Character Select Screen scales to extra modded fighters; adds movement = ssf2 in controllers.ini; restarting the game no longer doubles memory usage.

Published assets:

  • OpenSmash.exe (72.3 MB / 72,331,978 B · 145 downloads · SHA-256 7e4b714207874f733696e0cf5279a448bf2f76fd672bfa4e8eaa2abab734715d)
  • OpenSmash.exe.sha256 (81 bytes / 81 B · 17 downloads · SHA-256 5d6635682eb46207f379ac0f01807287b92b5b302daa46bea4199db6ecc760af)
v0.3.0-alpha.1November 4, 2026, 02:50 UTC · 175 asset downloads
  • First unified OpenSmash-Ultimate release: Merges ssbu-recomp and WindowSmash behind a single OpenSmash.exe launcher (#118).
  • Startup shader cache prewarm (#119) & low-latency default (#123): Warms cached shaders at boot within 1/3 of system RAM and enables low_latency = 1 by default.
  • Unlimited online room paging (#122): Adds 24-room paging in Local Wireless and full room browsing in Settings → Lobby.
  • Mod Check & Share (#110, #124) + 4–8 GB RAM builds (#114): Adds GameBanana conflict/update checks, shareable mod lists, and low-RAM compiler job scaling.

Published assets:

  • OpenSmash.exe (72.3 MB / 72,331,982 B · 152 downloads · SHA-256 cc7840c0391b0898d9489e34c036233430c845e18702f8b26963ae0c5661103b)
  • OpenSmash.exe.sha256 (81 bytes / 81 B · 23 downloads · SHA-256 5321e8cc92393b8837d4150d847f9333a4eb9bd4ea822f33500279299bfff350)

WindowSmash pre-merge milestones (OpenSmash-Ultimate/WindowSmash)

Created October 18, 2026 (464 stars, 37 forks), OpenSmash-Ultimate/WindowSmash published 2 source-only tags before becoming the root runtime of the merged repository:

Milestone / TagPublished (UTC)LinkSummary
Repository Merge2026-10-21OpenSmash-Ultimate/OpenSmash-UltimateWindowSmash and ssbu-recomp unite under OpenSmash-Ultimate/OpenSmash-Ultimate with WindowSmash’s 13.0.5 runtime as the root tree.
v0.2.0-alpha.1October 18, 2026, 20:07 UTCGitHub tagSecond public source alpha of WindowSmash prior to organization merge.
v0.1.0-alpha.1October 18, 2026, 00:52 UTCGitHub tagInitial public source alpha release of WindowSmash for Super Smash Bros. Ultimate 13.0.5.

All 61 ssbu-recomp runtime & toolchain releases (OpenSmash-Ultimate/ssbu-recomp)

Created October 12, 2026 (609 stars, 72 forks), OpenSmash-Ultimate/ssbu-recomp published 61 automated binary releases (50,019 total downloads) spanning 59 prebuilt NVN-to-Vulkan host runtimes plus portable LLVM 9.0.0 and LGPL FFmpeg 8.1.3 archives. Every full 64-character SHA-256 digest below is preloaded into our local browser verifier:

TagPublished (UTC)AssetSizeDownloadsSHA-256 Prefix
runtime-6de107d2026-10-21 18:31Zssbu-runtime-6de107db53.zip4.9 MB15,0756432fd0aab768110…
runtime-753633f2026-10-21 17:30Zssbu-runtime-753633f1dc.zip4.9 MB399cd407c894e25b04d…
runtime-0a397792026-10-21 17:14Zssbu-runtime-0a39779a8d.zip4.9 MB261a62e44398e00d9df…
runtime-5a147a42026-10-21 16:27Zssbu-runtime-5a147a44e3.zip4.9 MB91b448147e240e1b69…
runtime-24f5bda2026-10-21 16:22Zssbu-runtime-24f5bda933.zip4.9 MB20c63684dbba0ab304…
runtime-532188d2026-10-21 16:17Zssbu-runtime-532188d93e.zip4.9 MB1678cc2464734afdfc…
runtime-daa09382026-10-21 15:36Zssbu-runtime-daa0938053.zip4.9 MB2,46949970b10e68bf1b9…
runtime-0096b842026-10-21 15:27Zssbu-runtime-0096b84435.zip4.9 MB1542c098f5f1d91b98…
runtime-41ed9a42026-10-21 13:18Zssbu-runtime-41ed9a4ec2.zip4.9 MB147d0af431b1facdd51…
runtime-cd4a0242026-10-21 12:46Zssbu-runtime-cd4a0244bf.zip4.9 MB61d41f459a1881b30b…
runtime-571986c2026-10-21 12:30Zssbu-runtime-571986cdfc.zip4.9 MB167cebc1c8042201ac…
runtime-b4735522026-10-21 11:54Zssbu-runtime-b473552aeb.zip4.9 MB39996b2069a179b63e…
runtime-169b4672026-10-21 11:41Zssbu-runtime-169b467a65.zip4.9 MB20fd3b61f551a33f45…
runtime-17fe5682026-10-21 06:25Zssbu-runtime-17fe568717.zip4.9 MB169604f06ffbbdb9750…
runtime-6f301d12026-10-21 04:18Zssbu-runtime-6f301d1542.zip4.9 MB171f3cb6cd8b2a790b8…
runtime-066cd402026-10-21 03:48Zssbu-runtime-066cd404d9.zip6.4 MB57dcd34c2f1c00cf98…
runtime-7ec8ae62026-10-21 03:10Zssbu-runtime-7ec8ae6c81.zip6.4 MB726b9ab185dfa29d0e…
runtime-b6f59c82026-10-21 01:31Zssbu-runtime-b6f59c8d80.zip6.4 MB166cf2fb99c1d20638b…
runtime-d3aa4c92026-10-21 01:27Zssbu-runtime-d3aa4c91ab.zip6.4 MB17091f60e1b0f4991eb…
runtime-350fcf92026-10-21 01:18Zssbu-runtime-350fcf9254.zip6.4 MB20e3dda19997c0c224…
runtime-8f793042026-10-21 01:12Zssbu-runtime-8f79304aa4.zip6.4 MB298a18104342873fa6…
runtime-400f3692026-10-21 01:01Zssbu-runtime-400f36988a.zip6.3 MB233a12667690056197…
runtime-030ff712026-10-21 00:42Zssbu-runtime-030ff71d32.zip6.3 MB27255a1bf1271e3887…
runtime-5f0b1fc2026-10-20 23:47Zssbu-runtime-5f0b1fc486.zip6.3 MB607777bc13bd1298f1…
runtime-e819d622026-10-20 22:55Zssbu-runtime-e819d62b6b.zip6.3 MB5717470cb1bb230970…
runtime-1cc878a2026-10-20 20:29Zssbu-runtime-1cc878a571.zip6.3 MB158f3584d1c931812c6…
runtime-4cc900c2026-10-20 20:05Zssbu-runtime-4cc900c532.zip6.3 MB30d79a317d77e65de1…
runtime-1e6462e2026-10-20 19:57Zssbu-runtime-1e6462e6c5.zip6.3 MB1784448eee6300204f…
runtime-4f0fe442026-10-20 19:56Zssbu-runtime-4f0fe44baa.zip6.3 MB4fdace4e7491e69f6…
runtime-20bd2bf2026-10-20 19:32Zssbu-runtime-20bd2bf72e.zip6.3 MB32d0589e2b928289aa…
runtime-2f3308a2026-10-20 19:25Zssbu-runtime-2f3308af25.zip6.3 MB12453db1a3228ecd0c…
runtime-9f999c12026-10-20 19:10Zssbu-runtime-9f999c1abf.zip6.3 MB2576b12aec144673b8…
runtime-7772a7b2026-10-20 19:02Zssbu-runtime-7772a7b66e.zip6.3 MB147c69126322b5eead…
runtime-82b364e2026-10-20 18:38Zssbu-runtime-82b364e64a.zip6.3 MB36b0d39d3c9e6ca03f…
runtime-b4ee70d2026-10-20 17:32Zssbu-runtime-b4ee70d17d.zip6.3 MB8112a0246d4a9bb85a…
runtime-39bbddf2026-10-20 17:31Zssbu-runtime-39bbddf51b.zip6.0 MB437c1a53630c07622…
runtime-f31041c2026-10-20 17:30Zssbu-runtime-f31041c1f1.zip6.0 MB8a7a4482aea2f1045…
runtime-49db52f2026-10-20 17:25Zssbu-runtime-49db52f6e4.zip6.0 MB87796734e620eb683…
runtime-e907da92026-10-20 17:24Zssbu-runtime-e907da9ef4.zip6.0 MB8d3b615d12d88221d…
runtime-eac10a12026-10-20 16:45Zssbu-runtime-eac10a1d77.zip6.0 MB60b98251c0e03a722b…
runtime-c2ca7052026-10-20 16:38Zssbu-runtime-c2ca7059a0.zip6.0 MB12c67070750194d9f3…
runtime-cf87b452026-10-20 16:31Zssbu-runtime-cf87b45d52.zip6.0 MB1053eed70f33e654bf…
runtime-bea9c522026-10-20 16:30Zssbu-runtime-bea9c52771.zip6.0 MB5fc5c38e9d4ec757c…
runtime-ecdf7282026-10-20 16:17Zssbu-runtime-ecdf7283dc.zip6.0 MB23568bf3031915cb46…
runtime-c0c7c882026-10-20 15:27Zssbu-runtime-c0c7c88079.zip6.0 MB61b5de02c116dd9c73…
runtime-66c511a2026-10-20 14:54Zssbu-runtime-66c511ae39.zip4.6 MB36fb053a1d0380d31a…
runtime-5c489c82026-10-20 14:50Zssbu-runtime-5c489c870f.zip4.6 MB11f683ffd992da7f35…
runtime-fb7662a2026-10-20 13:51Zssbu-runtime-fb7662a384.zip4.6 MB17202c3b860b0880ed2…
runtime-8c03fab2026-10-20 13:05Zssbu-runtime-8c03fabce1.zip4.6 MB608cf7b15363ebcf04…
ffmpeg-8.1.3-lgpl2026-10-20 13:04Zssbu-ffmpeg-8.1.3-lgpl-win64.zip3.3 MB14,02247f0bb9ec3e1d309…
runtime-5a25ee92026-10-20 12:38Zssbu-runtime-5a25ee9091.zip4.5 MB475695ec652c6bb573…
llvm-9.0.0-portable2026-10-20 12:30Zllvm-9.0.0-win64-portable.zip69.0 MB14,5050e0c34046589a73e…
runtime-78131cf2026-10-20 12:14Zssbu-runtime-78131cfef1.zip4.5 MB41c5081352bfdb2294…
runtime-f3ac7de2026-10-20 12:08Zssbu-runtime-f3ac7de0fa.zip4.5 MB88e4127070e5f6077…
runtime-461c9742026-10-20 11:56Zssbu-runtime-461c974d8e.zip4.5 MB217f7ec9425d8a4718…
runtime-5d8371b2026-10-20 11:24Zssbu-runtime-5d8371b79c.zip4.5 MB29833548ea2c807368…
runtime-2fa25c02026-10-20 02:51Zssbu-runtime-2fa25c08c9.zip4.5 MB39695d5623119992cfd…
runtime-695a3782026-10-20 02:40Zssbu-runtime-695a3780bb.zip4.5 MB174fdfc53e9065e622…
runtime-f4cc28c2026-10-20 02:27Zssbu-runtime-f4cc28cee0.zip4.5 MB95fcde546ac25dd105…
runtime-986c9272026-10-19 20:52Zssbu-runtime-986c927016.zip4.5 MB23630b5d9f114f4d1de…
runtime-0b004ee2026-10-19 20:09Zssbu-runtime-0b004eee3f.zip4.5 MB65c6a94c7b454a1433…

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):

HardwareBest For in OpenSmash-UltimateInput Path & Latency NotesLink
Mayflash 4-Port GameCube Controller USB Adapter4-port GameCube controller playSwitch to Wii U mode for native 4-port GameCube input + rumble (second grey USB plug)View on Amazon
Nintendo Switch Pro ControllerNative positional ABXY layoutMatches Switch button positions out of the box via SDL3 (`[device switchpro]`)View on Amazon
GameSir Cyclone 2Low-latency 1000 Hz wireless SmashZero-drift TMR sticks, microswitch face buttons, XInput & Switch SDL3 modesView on Amazon
8BitDo Ultimate 2 WirelessDesktop & SteamOS handheld dockTMR sticks, charging dock, 2.4 GHz dongle + Switch / XInput mode switchView on Amazon
Sony DualSensePlayStation pad (`[device ps5]`)Full SDL3 support with configurable per-device rumble and deadzone in `controllers.ini`View on Amazon
Xbox Wireless ControllerZero-setup Windows 10/11 XInputWorks natively for players 1–4; set `layout = labels` or `style = gamecube` if desiredView on Amazon

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Common questions

Why does OpenSmash-Ultimate update from the main branch instead of waiting for new release tags?

OpenSmash-Setup.exe (v0.3.0-alpha.3) bootstraps your installation, and from that point forward Settings → Update inside OpenSmash.exe checks GitHub’s main branch directly, pulling new commits and rebuilding only changed files while keeping your save and settings.

How many total releases and downloads exist across the OpenSmash ecosystem?

As of November 13, 2026, there are 66 total tagged releases (3 on OpenSmash-Ultimate/OpenSmash-Ultimate, 2 source tags on OpenSmash-Ultimate/WindowSmash, and 61 binary releases on OpenSmash-Ultimate/ssbu-recomp) accounting for 63,514 verified asset downloads and 1,235 combined GitHub stars.