| 2023-07-09 01:23:58 | T-101 | Added Paranoids as organiser of Payback 2015 |
| 2023-07-09 01:23:51 | T-101 | Added Darklite as organiser of Payback 2015 |
| 2023-06-06 14:31:14 | Terwiz | Added Terwiz as organiser of Payback 2015 |
| 2021-01-16 00:00:53 | Adellan | Added Adellan as organiser of Payback 2015 |
| 2021-01-13 07:37:22 | T-101 | Added Jope as organiser of Payback 2015 |
| 2021-01-13 07:37:09 | T-101 | Added Dr. Doom as organiser of Payback 2015 |
| 2021-01-13 07:36:47 | T-101 | Added H7 as organiser of Payback 2015 |
| 2021-01-13 07:36:21 | T-101 | Updated T-101 as organiser of Payback 2015: changed role to Main |
| 2021-01-13 07:35:53 | T-101 | Added T-101 as organiser of Payback 2015 |
| 2015-04-18 17:22:11 | joga | Added competition Real Wild |
| 2015-02-03 16:32:34 | Quarryman | Added link https://www.scene.org/dir.php?dir=/parties/2015/payback15/ |
| 2015-02-03 06:11:50 | Terwiz | Added competition Photo |
| 2015-02-03 06:03:02 | Terwiz | Added competition Tracked Music |
| 2015-02-02 12:52:40 | supadupa | Added competition Animated GIF |
| 2015-02-02 12:34:16 | supadupa | Added competition Graphics |
| 2015-02-02 07:45:47 | andyh | Added competition ANSI |
| 2015-02-01 02:36:49 | lordnikon | Added competition ASCII |
| 2015-01-31 22:06:16 | menace | Added competition PC Demo |
| 2015-01-31 21:46:31 | menace | Added competition PC Intro |
| 2015-01-31 21:18:11 | menace | Added competition Combined Amiga |
| 2015-01-31 20:55:45 | menace | Added competition Oldskool 8bit |
| 2015-01-31 09:07:43 | menace | Added competition Streaming Music |
| 2014-12-23 15:54:31 | ltk_tscc | Set invitations to Payback |
| 2014-10-06 08:57:06 | menace | Set website to http://www.thepayback.fi/2015 |
| 2014-08-12 13:03:39 | menace | Added link http://www.demoparty.net/payback2015/ |
| 2014-08-10 13:04:25 | T-101 | Edited notes |
| 2014-08-10 13:02:38 | T-101 | Added party 'Payback 2015' |