Sonic 3 Recomp builds on Emulation King

Sonic 3 Recomp v0.7.6

Sun, 08 Nov 2026 00:00:00 +0000

for Windows, for Linux (AppImage)

Sonic 3 startup save-state loads resume the saved scene and palette continuation. Sonic & Knuckles startup now follows the original queued decompression timing, correcting title-module overlap and the intro fade.

Includes Windows x64 ZIPs and Linux x86_64 AppImages for Sonic 3, Sonic 3 & Knuckles and Sonic & Knuckles. Supply your own supported ROM. Widescreen defaults to Fit to screen; saved preferences and native game saves are preserved.

Linux AppImages target Ubuntu 24.04 / glibc 2.39 or newer. Checksums are supplied for every package.

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Sonic 3 Recomp v0.7.5

Sat, 07 Nov 2026 00:00:00 +0000

for Linux (AppImage), Source code, for Windows

Blue Spheres quickstates now resume active and paused play in Sonic 3 & Knuckles and standalone Sonic & Knuckles, including fresh-process loads.

Modern saves checksum and replace immutable files in the background. The slot browser reports completion after replacement and preserves the previous slot and preview on failure. Diagnostic replay retains accepted save ordering. Valid long-running native loops no longer exhaust the cumulative dispatch budget; non-progressing loops retain the runaway guard.

Widescreen rendering corrects save-menu scenery, Competition lighting, card visibility, independently scrolling race margins, and competitor/start-pole visibility beyond the original viewport, special-stage sky intensity, and retained AIZ scenery and actor handovers. Standalone Sonic & Knuckles now verifies its canonical ROM checksum.

Includes all three games as Windows x64 ZIPs and Linux x86_64 AppImages. Fresh packages enable Fit widescreen. Existing explicit display choices, native in-game saves and settings are preserved.

The bundled Sonic 1 campaign allocates every authored Star Light scroll row, preventing a stack-buffer overflow.

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Sonic 3 Recomp v0.7.4

Fri, 06 Nov 2026 00:00:00 +0000

for Linux (AppImage), Source code, for Windows

This Sonic 3-family bugfix update addresses 25 report groups. Another 17 groups have explicit original-behavior, nonreproduction or deferred decisions; those are not counted as fixes.

Restore the full Blue Spheres field in standalone Sonic 3 by reading its native board address. Standalone S&K’s actual special stage was separately checked and works.
Keep the visible Hydrocity tunnel’s colors until it leaves the wide view, and repair the current’s missing edge fill and surface strips.
Correct Angel Island and Hydrocity art, map and title-card handovers in the extended view; retain revealed hollow trunks and coherent level-select lettering.
Restore the original interrupt bookmark during Angel Island’s bombing transition. The redraw now takes 8 wall frames instead of 32 in both Sonic 3 and S3&K. Variable loading time still differs with widescreen headroom; exact cycle parity is not claimed.
Repair the HCZ act-transition splash-slot conflict and discover the original camera-sabotage continuation handlers in both hosts.
Restore bright Competition/Special Stage backgrounds and correct standalone S&K title/Mushroom Hill intro art publication.
Accept the specifically verified Sega Classics Steam S3&K image without modifying its bytes. Unqualified variants remain subject to the normal ROM checks.

Fresh packages default to adaptive Fit widescreen and diagnostics. Explicit saved choices and native saves are preserved. The included diagnostic replay helper supports current-build captures; old save states remain build-specific. Disk saves retain the existing frame-loop restart limitation and do not promise immediate uninterrupted phase parity.

No ROM or converted stage bank is included. Use your own supported game image.

Qualified source candidate: game d0c6bfa7891cb34d741ba589e571b14ac1074a4a, engine 3ebf1fc50e0bb665f0378bdae6f2e7be31a5ad61, UI aee41e1dc834c105fd290d7c833bbbd7fbc71c1e. Detailed per-report evidence and bounded deferrals are retained in the project feedback ledger.

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Sonic 3 Recomp v0.7.3

Tue, 03 Nov 2026 00:00:00 +0000

for Linux (AppImage), for Windows

Sonic family v0.7.3

Forty further reported defects have qualified corrections in this update, covering Sonic 3 & Knuckles, Sonic 3 and Sonic & Knuckles.

Keep widescreen framing coherent across the AIZ bombing transition using the original neighboring maps. Repair the native graphics-decompression queue so stale entries cannot overwrite Tails’ AI state and corrupt post-fire terrain.
Correct original-size title-card/results entry and retirement, menu and bonus transitions, HUD/character palette ownership, stage-boundary scrolling and animated save-preview motion.
Keep sprites and terrain on the same published camera scene. Preserve matching presentation through local rewind, and retain native activation/timing during recorded demos.
Correct interrupted signpost spinning, late companion catch-up, Shadow menu fades and imported-stage boss anchor/defeat progression.
Keep Windows gameplay and audio advancing while the window is dragged or resized. Keep launcher content imports responsive and wait safely for them when closing.

Fresh profiles use Adaptive Fit widescreen and diagnostic replays by default. Existing saved aspect/mod choices and native saves are preserved. Supply your own matching game media; no ROM or converted campaign bank is included.

The release includes three Windows x64 ZIPs and three Linux x86_64 AppImages. All six packages passed their supported validation, fresh gameplay/defaults, saved-choice and replay checks. Native Windows/Linux references match. See the player-feedback burndown for individual decisions and limits.

Some reports match the original game or were closed for this pass after bounded nonreproduction or approved artwork deferral. These are separate from fixes. Missing character poses/artwork remain deferred when suitable existing frames are unavailable. Exact joined-fire native-only rewind was not observed; native-intro rewind, joined-scene first-render roundtrips and settled disk-state checks are separate evidence.

Imported Sonic 1 packs made before the lossless palette fixes still need source-media reimport; this update cannot reconstruct colors discarded by older packs. Save states remain build-specific. Keep cartridge saves (*.srm) and explicit settings when upgrading.

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Sonic 3 Recomp v0.6.5

Mon, 02 Nov 2026 00:00:00 +0000

for Windows

Sonic family v0.6.5

Windows x64 updates for Sonic 3, Sonic & Knuckles and Sonic 3 & Knuckles. Includes the current main-branch game fixes from v0.6.4 and pins the shared engine to merged optimization-campaign commit fe9168fe8ed22f84bd9bcda07dbfac878f54605b (core 03ba2787da829369bbc2d958621b10330885c8f8).

Carries the qualified execution, persistence, capture and rendering ownership improvements, including optional GPU high-resolution presentation.
Sonic 3 & Knuckles uses qualified native IPO/profile-guided optimization. Sonic 3 and Sonic & Knuckles retain ordinary compilation: their IPO-only experiments were rejected; ordinary-compilation timing was neutral/inconclusive under shared-host variation. No universal speedup or zero-overhead claim is made.
Keeps current-build rewind/save-load, native saves, clean gameplay captions and replayable feedback. Native saves and campaign companion files must be preserved when upgrading.

Bring your own matching game media. Public archives exclude game media, converted packs, recordings, personal saves and settings. Private local owner archives include only the matching owned ROM in addition to the verified public payload. Build metadata records exact title, engine, UI and disassembly pins.

Preserves current native/imported palette and menu features through the reviewed shared-engine presented-raster compatibility contract; renderer callbacks use designated fields so viewport ownership and capture requests remain distinct.

Existing shared launcher, sample-rate, input, discovery and interrupt behavior from the current supported engine branch is preserved in this update.

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Sonic 3 Recomp v0.7.2

Mon, 02 Nov 2026 00:00:00 +0000

for Linux (AppImage), for Windows

Sonic family v0.7.2

Infinite time now counts past 9:59, up to 99:59, using the original digit artwork. At 99:59 the displayed clock stops, but play can continue without Time Over.

The original 100,000-point time bonus applies only during the actual 9:59 second. Finishing at 10:00 or later receives the normal late-finish bonus of 100 points. Turning the time limit back on after ten minutes restores the native Time Over behavior on the next active timer update.

The option remains off by default. Native/widescreen HUD positions, high-FPS presentation, saved clock values and unrelated timers retain their normal behavior. No new assets. All three S3-family variants retain default-on diagnostic replays and v0.7.1’s fixes and supported media imports.

Supply your own matching game media; public packages exclude ROMs, converted content, saves and settings.

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