| 2016-09-14 16:05:38 | ltk_tscc | Edited notes |
| 2016-09-14 16:05:17 | ltk_tscc | Edited notes |
| 2016-09-14 15:22:53 | ltk_tscc | Set release date to 18 October 1990 |
| 2016-09-13 20:54:48 | ltk_tscc | Added tag 'gfa-basic' |
| 2016-07-25 14:53:42 | TheCollector | Added link http://cyber.savina.net/defcon/defcon.htm |
| 2015-09-06 13:05:43 | ltk_tscc | Edited notes |
| 2015-09-06 13:05:27 | ltk_tscc | Edited notes |
| 2015-09-06 13:00:03 | ltk_tscc | Added tag 'sampledemo' |
| 2015-09-06 12:59:57 | ltk_tscc | Added 4 screenshots |
| 2015-09-06 12:59:41 | ltk_tscc | Deleted screenshot |
| 2015-09-06 12:59:39 | ltk_tscc | Deleted screenshot |
| 2015-09-06 12:59:37 | ltk_tscc | Deleted screenshot |
| 2015-04-09 16:40:41 | ltk_tscc | Added link http://www.atarimania.com/demo-atari-st-defcon-demo_26468.html |
| 2014-10-14 12:42:59 | ltk_tscc | Added link http://www.pouet.net/prod.php?which=32695 |
| 2013-10-08 10:11:31 | ltk_tscc | Added credit for Pulsar on Defcon Demo: Graphics |
| 2013-10-08 10:11:01 | ltk_tscc | Added credit for Brain Blaster on Defcon Demo: Code |
| 2013-10-08 10:10:56 | ltk_tscc | Added credit for Metal Ages on Defcon Demo: Code |
| 2013-10-08 10:10:39 | ltk_tscc | Added 3 screenshots |
| 2013-05-09 16:27:02 | ltk_tscc | Added competition placing for Defcon Demo in Forum Atari 1990 None competition |
| 2013-05-09 16:26:37 | ltk_tscc | Added production 'Defcon Demo' |