.LVLX File Extension
File TypeExtendable Level File
What is an LVLX file?
Level file format used by Platform Game Engine (PGE) Project, an open source game engine; stores one or more level locations, which may include level sections, player start points, NPCs, and doors available on the map.
NOTE: The PGE Engine has not yet been released but you can edit LVLX files with the PGE Editor.