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SonLVL

C
C tier on Game Level EditorsScore 6.7 · #10 of 27
Android app
Not listed
Free plan
No
Runs on
Linux, Mac, Windows
github.com
The SonLVL homepage
Visit site Alternatives

Summary

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.

Who it is for

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.

What is 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.

What to know first

  • 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.

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.

Compared on game level editors

Free plan
Yesgithub.com
Level dimensions
2dgithub.com
Tilemap tools
Yesgithub.com
Terrain tools
Yesgithub.com
Entity placement
Yesgithub.com
Prefab or template tools
Yesgithub.com
Visual scripting
Nogithub.com

Facts

Purpose
SonLVL is a public Sonic Retro repository named SonLVL.github.com · 30 Sept 2026
Maker
Sonic Retro describes itself as a collection of tools and disassemblies made by its members.github.com · 30 Sept 2026
Language
GitHub identifies the SonLVL repository's primary language as C#.github.com · 30 Sept 2026
Repository activity
The repository page lists 760 commits.github.com · 30 Sept 2026
Community
The repository page lists 81 stars, 29 forks, and 82 issues.github.com · 30 Sept 2026
Included tools
The repository contains SonLVL alongside LevelConverter, SonAni, SonPLN, S1SSEdit, S3SSEdit, SpritePlotter.NET, and other tools.github.com · 30 Sept 2026
Game configurations
The INI Files directory includes configurations for Sonic 1, Sonic 2, Sonic 3K, Sonic CD PC, and Sonic & Knuckles Collection.github.com · 30 Sept 2026
Interface technology
SonLVL's program entry point uses Windows Forms.github.com · 30 Sept 2026
Runtime detection
The source detects the Mono runtime and checks for Windows, macOS, Unix, and Xbox platforms.github.com · 30 Sept 2026
Latest release
Snapshot-2026.14 is described as a temporary snapshot of SonLVL as of July 14, 2026.github.com · 30 Sept 2026
Downloads
The latest release includes SonLVL.zip at 703 KB plus separate ZIP downloads for related tools.github.com · 30 Sept 2026
Build status
The release notes say the snapshot is provided until the automated build system is put in place.github.com · 30 Sept 2026
Source availability
The latest release provides source code in both ZIP and tar.gz formats.github.com · 30 Sept 2026
Release verification
GitHub marks the latest release commit as created on GitHub.com and signed with GitHub's verified signature.github.com · 30 Sept 2026
Error handling
The application writes an error log named SonLVL.log when an unhandled exception occurs.github.com · 30 Sept 2026
editor function
SonLVL provides controls for opening, saving, undoing and redoing level projects.github.com · 1 Oct 2026
editing tabs
The interface includes Objects, Foreground, Background and Art tabs.github.com · 1 Oct 2026
object editing
Users can select, move, create, delete, copy and paste objects and ring groups.github.com · 1 Oct 2026
level layout editing
Users can draw levels with chunks, select areas and toggle the Sonic 1 loop flag.github.com · 1 Oct 2026
chunk editing
Chunk editing supports reordering, swapping, flipping, solidity changes and block index changes.github.com · 1 Oct 2026
block editing
Block editing supports reordering, swapping, horizontal or vertical flipping, priority, palette and tile-index changes.github.com · 1 Oct 2026
collision views
The editor can disable collision viewing, show collision paths 1 and 2, and display angle values.github.com · 1 Oct 2026
Sonic CD support
A control toggles viewing objects from all time zones for Sonic CD.github.com · 1 Oct 2026
download release
The Snapshot-2026.14 release includes a SonLVL.zip asset listed at 703 KB.github.com · 1 Oct 2026
release status
Snapshot-2026.14 is described as a temporary release until the automated build system is put in place.github.com · 1 Oct 2026
release security
The Snapshot-2026.14 commit was created on GitHub.com and has a verified GitHub signature.github.com · 1 Oct 2026
repository status
SonLVL is a public GitHub repository maintained in C# with 760 commits shown on its repository page.github.com · 1 Oct 2026
support channel
The repository exposes a GitHub Issues tracker, which shows 82 issues on the repository page.github.com · 1 Oct 2026
maker organization
Sonic Retro describes its GitHub organization as a collection of tools and disassemblies by Sonic Retro members.github.com · 1 Oct 2026

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