SonLVL
SonLVL is a level-project editor in the public Sonic Retro repository, a collection of tools and disassemblies made by its members.
What SonLVL is
SonLVL is a level-project editor in the public Sonic Retro repository, a collection of tools and disassemblies made by its members. Its interface includes Objects, Foreground, Background, and Art tabs, with controls for opening, saving, undoing, and redoing project changes. Object tools let users select, move, create, delete, copy, and paste objects and ring groups. For level layouts, users can draw with chunks, select areas, and toggle the Sonic 1 loop flag. Chunk and block controls cover rearranging, swapping, flipping, solidity, priority, palette, and tile-index changes. Collision views can be turned off or show collision paths and angle values; a Sonic CD control displays objects from all time zones. The repository includes game configurations for Sonic 1, Sonic 2, Sonic 3K, Sonic CD PC, and Sonic & Knuckles Collection. The repository's primary language is C#, and it lists Linux, macOS, and Windows support. Snapshot-2026.14 is described as temporary while an automated build system is prepared; it includes a 703 KB SonLVL ZIP and source archives. An unhandled exception creates SonLVL.log.
Good
- Supports object and ring-group editing.
- Includes chunk and block editing controls.
- Collision views can show paths and angle values.
- Repository includes configurations for several Sonic games.
- Latest snapshot includes source archives.
Watch out
- Snapshot-2026.14 is described as a temporary release.
- Release notes say an automated build system is still being put in place.
- An unhandled exception produces an error log.
Who it suits
SonLVL may suit people working on Sonic level projects who need tools for objects, layouts, chunks, blocks, and collision views. Its listed configurations cover several Sonic games and collections.
Verdict
SonLVL brings detailed level, object, chunk, and block editing into one tool for Sonic projects. The latest listed snapshot is temporary, so readers should account for its stated release status.
The facts
Each one read from SonLVL's own pages, with the date it was checked.
What it does
- block editing
- Block editing supports reordering, swapping, horizontal or vertical flipping, priority, palette and tile-index changes.checked 1 Oct 2026
- Build status
- The release notes say the snapshot is provided until the automated build system is put in place.checked 30 Sep 2026
- chunk editing
- Chunk editing supports reordering, swapping, flipping, solidity changes and block index changes.checked 1 Oct 2026
- collision views
- The editor can disable collision viewing, show collision paths 1 and 2, and display angle values.checked 1 Oct 2026
- Community
- The repository page lists 81 stars, 29 forks, and 82 issues.checked 30 Sep 2026
- download release
- The Snapshot-2026.14 release includes a SonLVL.zip asset listed at 703 KB.checked 1 Oct 2026
- Downloads
- The latest release includes SonLVL.zip at 703 KB plus separate ZIP downloads for related tools.checked 30 Sep 2026
- editing tabs
- The interface includes Objects, Foreground, Background and Art tabs.checked 1 Oct 2026
- editor function
- SonLVL provides controls for opening, saving, undoing and redoing level projects.checked 1 Oct 2026
- Error handling
- The application writes an error log named SonLVL.log when an unhandled exception occurs.checked 30 Sep 2026
- Game configurations
- The INI Files directory includes configurations for Sonic 1, Sonic 2, Sonic 3K, Sonic CD PC, and Sonic & Knuckles Collection.checked 30 Sep 2026
- Included tools
- The repository contains SonLVL alongside LevelConverter, SonAni, SonPLN, S1SSEdit, S3SSEdit, SpritePlotter.NET, and other tools.checked 30 Sep 2026
- Interface technology
- SonLVL's program entry point uses Windows Forms.checked 30 Sep 2026
- Language
- GitHub identifies the SonLVL repository's primary language as C#.checked 30 Sep 2026
- Latest release
- Snapshot-2026.14 is described as a temporary snapshot of SonLVL as of July 14, 2026.checked 30 Sep 2026
- level layout editing
- Users can draw levels with chunks, select areas and toggle the Sonic 1 loop flag.checked 1 Oct 2026
- object editing
- Users can select, move, create, delete, copy and paste objects and ring groups.checked 1 Oct 2026
- Purpose
- SonLVL is a public Sonic Retro repository named SonLVL.checked 30 Sep 2026
- release security
- The Snapshot-2026.14 commit was created on GitHub.com and has a verified GitHub signature.checked 1 Oct 2026
- release status
- Snapshot-2026.14 is described as a temporary release until the automated build system is put in place.checked 1 Oct 2026
- Release verification
- GitHub marks the latest release commit as created on GitHub.com and signed with GitHub's verified signature.checked 30 Sep 2026
- Repository activity
- The repository page lists 760 commits.checked 30 Sep 2026
The company
- Maker
- Sonic Retro describes itself as a collection of tools and disassemblies made by its members.checked 30 Sep 2026
- maker organization
- Sonic Retro describes its GitHub organization as a collection of tools and disassemblies by Sonic Retro members.checked 1 Oct 2026
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