.SLP File Extension

Project Slippi is a fan-made extension to Super Smash Bros. Melee that adds several features. One of the features Project Slippi adds is the ability to automatically save match replays as SLP files.

With this feature enabled, after a match played using Project Slippi concludes, the program automatically saves a replay of that match and the match's statistics in an SLP file. Players can watch the replay by transferring it to their PC and opening it in Slippi Launcher, which is available for Windows, macOS, and Linux.

You can open an SLP file in Slippi Launcher (multiplatform) to play the replay it contains. The easiest way to open an SLP file is to place it in the ~/​Users/​YourUserName/​Slippi directory, select Slippi Launcher's Replays tab, and then open your SLP file.

Software developers, localization specialists, and translation teams typically use SLP files as part of professional software internationalization workflows. The file does not contain the full compiled application itself; instead, it stores project data needed to generate localized builds. Sisulizer reads the SLP file to display translatable text in its visual interface, where translators and developers can review, edit, and validate translations before building the localized version of the application.

You can open SLP files with Sisulizer. However, Sisulizer is no longer developed.

To import an SLP file into StormLoader, select the Add button located in the program's upper left-hand corner. You can import any number of SLP files before launching a modded game of Stormworks (by selecting StormLoader's Launch button).