The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 1980 (1 member)
- 1981 (2 members)
- 1982 (1 member)
- 1983 (1 member)
- 1984 (2 members)
- 1985 (4 members)
- 1986 (4 members)
- 1987 (11 members)
- 1988 (10 members)
- 1989 (20 members)
- 1990 (17 members)
- 1991 (11 members)
- 1992 (10 members)
- 1993 (2 members)
- 1994 (10 members)
- 1995 (8 members)
- 1996 (5 members)
- 1997 (2 members)
- 1998 (4 members)
- 1999 (2 members)
- 2000 (2 members)
- ABI Electronics (3 members)
- Allumer (1 member)
- Amstar (1 member)
- Amstrad (1 member)
- Apple (67 members)
- Arcade (1,025 members)
- Arcadia (3 members)
- Atari (25 members)
- Atari Hardware ID (1 member)
- Atari PLD's (86 members)
- Athena (2 members)
- Atlus (1 member)
- Bad Dump (0 members)
- Banpresto (12 members)
- Bootleg (126 members)
- CAPCOM (80 members)
- CAPCOM B Boards (12 members)
- CAPCOM CPS1 (41 members)