An HE4 file is a sound archive used by Humongous Entertainment games, such as Fatty Bear and Backyard Soccer. It contains multiple sound files played during gameplay. HE4 files are typically used for storing the music in the game.

The HE4 file is well known for its association with the classic Putt-Putt and Fatty Bear adventure game. However, The HE4 file may be also opened by ScummVM, a program that recreates the Script Utility for Maniac Mansion (SCUMM) game engine and allows you to play the aforementioned classic games, as long as you have the appropriate game resource files. You can also extract the sound files from the HE4 archive using the HE games music extractor in Windows. NOTE: The HE4 file, along with the .HE0, .HE1, and .HE2 files, is located in the game directory.