.GB1 File Extension
File TypeGame Maker Backup File
File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.
What is a GB1 file?
Backup of a game project created with Game Maker, a game development program; created in case the original project file becomes corrupted or is accidentally deleted.
The number of backup files created by Game Maker can be selected by opening the Preferences within the Game Maker program and selecting the "General" tab. Then type the number of backups you would like saved next to "Maximal number of backups."