Screenshots & videos
About
Dr. Eggman’s (AKA Dr. Robotnik’s) Death Egg was once again blasted by Sonic, crash-landing on the peak of a volcano on the Floating Island. Dr. Eggman is still at large, and Sonic can’t allow him to get his hands on the Master Emerald and repair the Death Egg. Sonic must also keep Knuckles off his back but Knuckles has problems too. As guardian of the Floating Island and all the Emeralds, Knuckles must do his part to keep the island safe. While they’re going the rounds with each other, who will stop Dr. Eggman? To play Sonic 3: Angel Island Revisited, you need Sonic 3 & Knuckles from the SEGA Mega Drive & Genesis Classics collection installed on Steam.
Changelog
New features and improvements Bug fixes Modding features & improvements - Added an integrated file browser (in Options -> System) that allows for importing mod zips on Android and iOS/Web from the file system into S3AIR's app data - Save data is now stored across multiple files in "storage" inside your save data folder, making it easier to delete or backup individual files if needed - Added option for a hint on the hidden monitors that you can unveil with the signpost - Added options for several minor enhancements that have always been part of S3AIR, but could not be turned off before - A few more skippable cutscenes (end of LBZ 2, start of SSZ, DEZ act transition) - Performance optimizations for software renderer, specifically for rotated / scaled sprites display - More precise ground collision check for spilled rings - Fix for an issue that could lead to a stuttering frame rate - Fixed several software renderer bugs - Fixed a bug that could cause a crash during paused competition mode and in AIZ 2 / MHZ 2 blimp sequences - Fixes for server communication issues that could randomly break both Ghost Sync and the Update Check - Fixed that selecting HPZ in Act Select started the Lava Reef 2 boss fight - Fixed a random emulated soundtrack issue with sped-up music playback - Fix for emulated S3A versions of mini-boss music and Knuckles theme - Fixed a bug that could lead to incorrect sprite rendering in mods - Fixed that pressing Numpad-9 leads to a broken rewind and game freeze if dev mode is disabled - Using proper animation for Tails carrying Sonic when exhausted underwater - Corrected render priority for the Egg Mobile after SOZ 2 boss fight - Fix for first Sonic outro win pose sprite position and rotation - Fixed that ground did not fade to white after finishing a stage in Blue Sphere game mode - Fixed a glitch in Act Select when starting a game during a transition of the zone preview slideshow - Fixed a layering issue inside certain graphics, like Tails' run sprites - Fix for a glitch when going back to the main menu immediately after entering Data Select (namely while still fading in) - Fix for a memory leak related to text rendering - Fixed a crash and errors when a modded font was loaded from a zip file or a path with non-ASCII characters - Additional checks to prevent the "type is not convertible to string" error when e.g. the active-mods.json is malformed - A bunch of more fixes for minor glitches and inconsistencies in animations and palettes - New dev mode menu system (toggle by pressing F1 when dev mode is enabled) - Dev mode can now be toggled in the options menu's system tab (requiring a manual restart afterwards) - Both Act Select and the Pause Menu are now implemented in scripts, making them fully moddable - Lemonscript now supports arrays - for details, see page 11 of the Oxygen Handbook - Added support for constant arrays of types float and double - Local variables are now generally preferred over globals with the same name - Reworked persistent data functions, so you can store data in individual files and optionally in a local folder for your mod - You can now declare unresolvable mod conflicts with other mods as errors in your mod.json, using "IsConflict" in the "OtherMods" section - see pages 5/6 of the Modding.pdf - Support for mods to use up to four players (see "UsesFeatures" section in Modding.pdf) - Removed the hard limit for number of sprites - Increased the maximum supported number of lines and colors per line in custom palettes from 64 to 256 - "Renderer.enableSecondaryPalette" now supports screen heights over 254 - F10 now also reloads modded audio - Fixed that "Volume" property in audio_replacements.json was ignored in most cases - On desktop platforms, config.json will now be preferred over settings.json for all properties that are defined in both - Script compile error if a constant or global variable default value is too large for the data - Fixed a script compile crash when using floating point values with bitwise operations - Fixed a crash when retrying a previously failed mod script compilation - Added stringformat support for float and double data types (using "%f") - Added variants of "System.getGlobalVariableValueByName" for float, double, string types - Revised random number generation and added new script functions "System.randomFloat" and "System.randRange" variants - Added "makeCallable" function to get a u32 address for script functions to be used in calls - Added "System.removePersistentData" - Support for custom palettes in sprite rendering via new SpriteHandle functions "setPalette", "setPrimaryPalette", "setSecondaryPalette" - Added alternative script function variants of SpriteHandle methods "setRotation", "setScale", "setTintColor", "setAddedColor" - Added BlendMode constants to cpp_core_functions.lemon - Added convenience script functions "getScreenCenterX" and "getScreenCenterY" - "Log" and "LogDec" can now also be used with float, double, and string values - Added "System.isDevModeActive" script function to check whether dev mode is enabled - Oxygen Handbook now includes a documentation for how to use automatic font effects like outlines and shadows
Additional information
- Developer
- Eukaryot
- License
- GPL-3.0-only
- Category
- To Classify
- Size
- 10.0 MB
- Homepage
- https://sonic3air.org
- Available via
- Flathub (Flatpak), AUR (bin build), AUR (git build), Lutris (Git build), Lutris (Stable build)
- Catalog data as of
- 9/3/2026 (dataset snapshot date — per-app update dates aren't tracked yet)