| 2024-02-14 21:34:59 | mikael_pretzellogic | Added credit for Slajerek on Maestro Smooth: Text |
| 2023-08-26 16:36:04 | Brittle | Edited nick 'Slayer': changed aliases to 'SLR' |
| 2022-08-24 20:03:32 | Brittle | Added Slajerek as organiser of Xenium 2019 |
| 2022-05-29 18:09:53 | ISL | Updated Slajerek's credit on Amanita (80%): Code |
| 2022-05-29 18:06:46 | Brittle | Updated Slajerek's credit on Amanita (80%): Code, Graphics (design) |
| 2022-01-25 15:55:16 | Brittle | Added Slajerek as organiser of Moonshine Dragons 2022 |
| 2022-01-25 15:53:10 | Brittle | Added Slajerek as organiser of Moonshine Dragons 2019 |
| 2021-01-12 11:04:54 | AceMan | Added Slajerek as organiser of Xenium 2021 |
| 2020-08-07 13:39:36 | menace | Added Slajerek as a member of Caniballs |
| 2020-08-07 13:39:05 | menace | Added nick 'Slayer' |
| 2019-07-03 18:52:28 | 100bit | Added credit for Slajerek on NGC 1277 100%: Code |
| 2019-05-22 13:33:28 | Brittle | Set real name |
| 2019-05-21 10:37:36 | yugorin | Added credit for Slajerek on C64 65XE Debugger V0.64.56.6: Other (idea) |
| 2019-05-21 10:36:52 | yugorin | Added credit for Slajerek on C64 65XE Debugger V0.64.56.6: Code |
| 2019-05-19 17:28:07 | 100bit | Added credit for Slajerek on NGC1277 80%: Code |
| 2019-05-18 20:20:57 | Brittle | Updated Slajerek's credit on Pierwsze Wypociny (aka Yugorin's First): Other (help) |
| 2019-03-17 10:52:32 | Brittle | Added credit for Slajerek on Bad Boy: Other (testing) |
| 2018-09-03 13:24:57 | yugorin | Added credit for Slajerek on Pierwsze Wypociny (aka Yugorin's First): Other |
| 2018-02-17 17:52:54 | Brittle | Set location to Poland |
| 2018-02-17 17:52:31 | Brittle | Added links: http://noname.c64.org/csdb/scener/?id=28820, https://www.pouet.net/user.php?who=99978 |
| 2018-02-17 17:51:06 | Brittle | Added Slajerek as a member of Samar Productions |
| 2017-06-25 18:45:48 | tomaes | Added credit for Slajerek on C64 Debugger v0.5: Code |
| 2017-06-25 09:29:58 | tomaes | Added credit for Slajerek on ReDiscovered: Code |