| 2024-02-23 15:27:57 | Unlock | Added Maestro as a member of Arcoss |
| 2024-02-23 15:26:12 | Unlock | Added Snake as a member of Arcoss |
| 2024-02-23 15:21:47 | Unlock | Added BBS Fantasia as HQ for Arcoss |
| 2024-01-26 05:14:55 | psenough | Added Sinister as a member of Arcoss |
| 2023-06-12 15:29:18 | menace | Added Skull as a member of Arcoss |
| 2023-01-28 08:07:01 | menace | Added CHG as a member of Arcoss |
| 2020-08-11 06:44:09 | menace | Added Dr. Will as a member of Arcoss |
| 2020-06-28 15:16:01 | menace | Updated Syco's membership of Arcoss: changed group to Arcoss |
| 2019-09-21 16:04:05 | ltk_tscc | Added links: https://www.pouet.net/groups.php?which=8347, http://csdb.dk/group/?id=812 |
| 2017-01-09 06:54:42 | menace | Added Cupid as a member of Arcoss |
| 2017-01-09 06:52:53 | menace | Updated Sinister's membership of Arcoss: changed group to Arcoss, set as ex-member |
| 2016-08-20 19:18:07 | menace | Added Sinister as a member of Arcoss |