Instant Graphics and Sound
From Just Solve the File Format Problem
(Redirected from IGS)
Instant Graphics and Sound, also known as IGS or IG, is a plain-text graphics language created by Larry Mears in 1988 for the Atari ST computer to transmit vector graphics, sound effects, music, and animation from bulletin board systems. It also enabled mouse interactions.
IGS bears many similarities to the later RIPscrip protocol on the PC. Mears began releasing new versions of the IGS software in 2022, after a 30-year hiatus.
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Identification
These are text files. IGS commands within the files always begin with "G#
".
Examples
The following code would draw a line with the start point (206,35) and end point (225,44):
G#L>206,35,225,44:
Related formats
Format info
- IG specs v1.00 (1988)
- IGS specs v2.10 (1989-10)
- IGS specs v2.11 (1989-10)
- IGS specs v2.12 (1989-11)
- IGS specs v2.14 (1990-05)
- IGS specs v2.15 (1990-09)
- IGS specs v2.16 (1991-10)
- IGS specs v2.17 (1992-01, final contemporary release)
- IGS specs v2.18 (2022-12)
- IGS specs v2.19 (2023-06)
- IGS specs v2.20 (2024-06)
Software
- IGS v2.20 and IGDEV 1.3 (2024-06)
Sample files
- 13 sample .IG files from Discmaster
- 24 sample .IGS files from Discmaster
- dexvert samples — image/instantGraphicsAndSound