[RELEASE] RetroLemmini Level Editor 1.2

Started by WillLem, January 26, 2026, 10:44:45 AM

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WillLem

RetroLemmini Editor Release Topic

Download the latest version of the RetroLemmini Editor.

This level editor is based on the NeoLemmix Editor, and has been designed specifically to make levels for RetroLemmini. It features many of the Lemmini-specific controls you may be familiar with from the earlier NL 1.43 Editor such as support for steel areas, variable max fall distance, superlemming mode, etc. It expands upon this by adding support for direct playtesting (via F12)*, custom skillsets, visible trigger areas, level hints, and many other QOL features from the more recent versions of the NeoLemmix Editor.

*(N.B. You need RetroLemmini 2.6 or later for this to work).

RetroLemmini Editor supports .ini level files as well as the brand new .rlv format which can be used to file-associate level files with the RetroLemmini Editor (file-associating .ini files is not recommended due to how widespread the .ini file format is on Windows systems). The .rlv format is internally identical to .ini, and is fully supported in RetroLemmini 2.6 onwards.

If you wish to mass-convert between .ini and .rlv, use the Cleanse Levels feature (which can also update your levelpack.ini file to list the levels in the correct format).

Happy level creating! :lemming:  :lemming:  :lemming:


WillLem

Version 1.1.1 hotfix

Our first hotfix for the Editor!

:lemming: Bugfix

• If the styles cannot be loaded for any reason, an error message is shown and the Editor closes.



Download the latest version of the RetroLemmini Editor.


WillLem

#2
Version 1.2 Update

This is a fairly significant update for the RLEditor, with a number of feature additions and bugfixes.

:lemming: New OWW Directions
 • Added support for OWW Up/Down (will be available in RetroLemmini 2.8 onwards!)
 • Note that it's no longer possible to flip/rotate/invert OWW in the Editor (transformed OWWs are not supported in RetroLemmini yet)

:lemming: Piece Browser
 • Added a 'Random' button to the Piece Browser which, when clicked, randomized the piece style selection. It's possible to specify which styles are Randomized in the Style Manager; if no styles are specified, the entire list is randomized

:lemming: Default Author Name
 • Added a setting which automatically applies a default author name when a new level is created

:lemming: Cleanse Levels
 • Bugfix - Cleansing to existing ext (.ini/.rlv) no longer throws an exception
 • Bugfix - Progress form is linked to main form and kept on top. This is to prevent unhandled exceptions when focusing a different app during a cleanse
 • Highlight erasers is disabled when cleansing (it must be manually re-enabled afterwards if necessary)
 • mainLevel property is now internally supported to prevent errors during cleansing (ideally, it should no longer be used for new levels)
 • Bugfix - .ini/.rlv is written in correctly when auto-updating levelpack.ini

:lemming: Validate Levels - Validate levels can now auto-replace deprecated objects for OG styles. Choose 'Delete deprecated pieces' and they will be auto-replaced with the new corresponding piece

:lemming: Bugfixes - Whitespace and trailing backslashes are auto-trimmed from level titles.
 - Any opaque pixel in a trigger mask is seen as a trigger area (it no longer has to be a specific shade of pink).
 • 'Save As Image' sanitizes invalid characters when saving
 • Directory name is prioritized when identifying styles
 • Added backwards-compatibility for screen start positions in earlier levels (it always saves to the more recent format)



Download the latest version of the RetroLemmini Editor.