Little Big Adventure

Little Big Adventure is a 1994 action-adventure game developed by Adeline Software International. It was published in Europe by Electronic Arts, and by Activision in North America, Asia and Oceania under the name Relentless: Twinsen's Adventure. The game was initially released on CD-ROM and some time later on floppy disks; the CD-ROM version features full-motion video, music and speech whereas the floppy disk version has MIDI music files and still images to replace the videos. The game was later ported to the PC-98 and FM Towns and was released in Japan in 1995. It was released for the PlayStation in Japan and Europe in 1996 and 1997 respectively, and to Android and iOS devices in 2014.

In 1997, a PC-only sequel was released under the name of Little Big Adventure 2 (also known as Twinsen's Odyssey).

On October 20, 2015, an "Enhanced Edition" developed by DotEmu was released on Steam, alongside a re-release of the original game. In October 2021 both Little Big Adventure 1 and 2 engines source code were released under the GPL.