| 2025-09-06 09:24:18 | menace | Updated Manfred Trenz's membership of System 5: set as ex-member |
| 2024-01-21 11:53:23 | ltk_tscc | Updated Manfred Trenz's membership of Rainbow Arts: set as ex-member |
| 2024-01-21 09:35:30 | ltk_tscc | Added credit for Manfred Trenz on Megamove 2: Code, Graphics |
| 2023-12-29 15:15:53 | psenough | Added credit for Manfred Trenz on 1 Year! Chrome: Graphics (Charset) |
| 2021-01-06 08:16:44 | tomaes | Added credit for Manfred Trenz on Digital Madness: Code, Graphics |
| 2020-10-18 10:31:18 | ltk_tscc | Added link http://www.mt-fanpage.de/mt/ |
| 2020-10-18 10:30:59 | ltk_tscc | Added link http://www.mobygames.com/developer/sheet/view/developerId,63025/ |
| 2020-08-27 20:17:36 | ltk_tscc | Added Manfred Trenz as a member of Rainbow Arts |
| 2020-08-27 20:17:29 | ltk_tscc | Added Manfred Trenz as a member of System 5 |
| 2020-08-27 20:17:08 | ltk_tscc | Added nick 'The Master' |
| 2020-08-27 20:16:43 | ltk_tscc | Set real name |
| 2019-04-14 05:50:59 | menace | Added credit for Manfred Trenz on Note-Maker 100%: Graphics (charset) |
| 2018-12-11 11:34:32 | 100bit | Set location to Germany |
| 2018-12-11 11:34:24 | 100bit | Added links: http://csdb.dk/scener/?id=3887, http://csdb.dk/scener/?id=9154 |
| 2018-12-11 11:33:42 | 100bit | Added credit for Manfred Trenz on HF+MHI Coop Intro: Graphics (Charset) |
| 2018-03-11 12:22:50 | ltk_tscc | Added credit for Manfred Trenz on The Great Giana Sisters (Ste): Graphics |
| 2016-11-14 11:08:54 | menace | Added credit for Manfred Trenz on Vandalism News 66: Graphics (turrican ii logo) |