| 2022-12-04 18:38:26 | 100bit | Updated link http://csdb.dk/getinternalfile.php/208358/checkertro%20[ex].prg |
| 2021-02-25 05:34:26 | 100bit | Updated competition placing info for Checkertro 2021 in Intro Creation Competition 2020 16k competition |
| 2021-02-25 05:34:17 | 100bit | Updated competition placing info for Checkertro 2021 in Intro Creation Competition 2020 16k competition |
| 2021-02-07 12:09:12 | 100bit | Added competition placing for Checkertro 2021 in Intro Creation Competition 2020 16k competition |
| 2021-02-07 12:09:05 | 100bit | Added links: https://csdb.dk/release/?id=199674, https://www.pouet.net/prod.php?which=87922 |
| 2021-02-07 12:07:21 | 100bit | Added credit for Mythus on Checkertro 2021: Music |
| 2021-02-07 12:07:07 | 100bit | Added credit for Twilight on Checkertro 2021: Code, Graphics (+design) |
| 2021-02-07 12:06:53 | 100bit | Added screenshot |
| 2021-02-07 12:06:45 | 100bit | Added production 'Checkertro 2021' |