| 2024-03-08 23:44:11 | psenough | Added credit for OPM on The Power-Cartridge Simulator: Code, Graphics, Text |
| 2024-03-08 23:39:06 | psenough | Added credit for OPM on Saviour V11.0: Code |
| 2024-03-08 23:37:49 | psenough | Added credit for OPM on Distinction: Code |
| 2024-03-08 23:36:10 | psenough | Added credit for OPM on Digi Mix 1: Code, Music, Text |
| 2024-03-08 23:32:01 | psenough | Added credit for OPM on Namcap: Code |
| 2024-03-08 23:30:08 | psenough | Added credit for OPM on From Bad to Worse: Code, Graphics, Text |
| 2024-03-08 23:29:32 | psenough | Added credit for OPM on Blast 'em: Code |
| 2021-10-24 05:58:32 | menace | Added credit for OPM on Smooth Sounds: Code, Graphics, Text |
| 2020-11-03 15:11:06 | cba | Added credit for OPM on Amiga Simulator: Code, Text |
| 2020-07-26 16:16:01 | menace | Updated OPM's credit on Zoolook: Code |
| 2020-07-26 16:12:03 | menace | Added credit for OPM on Zoolook: Music |
| 2019-04-14 18:23:54 | menace | Set location to Netherlands |
| 2019-04-14 18:23:50 | menace | Set real name |
| 2019-04-14 18:23:16 | menace | Updated OPM's credit on The Music-Assembler: Code |
| 2019-04-14 18:21:22 | menace | Added credit for OPM on The Music-Assembler: Code (intro) |
| 2018-07-08 08:23:24 | menace | Added credit for OPM on Wizmusix: Code, Text |
| 2018-07-08 08:23:15 | menace | Added OPM as a member of Dutch USA-Team |