| 2020-06-04 20:15:46 | ltk_tscc | Added credit for Lightlord on Happro Demo: Graphics |
| 2020-06-04 20:15:36 | ltk_tscc | Added credit for Punisher on Happro Demo: Code |
| 2020-06-04 20:15:23 | ltk_tscc | Added credit for Dr. STein on Happro Demo: Code |
| 2020-06-04 20:15:10 | ltk_tscc | Added 11 screenshots |
| 2015-04-09 15:38:47 | ltk_tscc | Added link http://www.atarimania.com/demo-atari-st-happro-demo-_26089.html |
| 2014-10-08 21:14:10 | ltk_tscc | Added link http://www.pouet.net/prod.php?which=30979 |
| 2013-05-05 15:44:48 | ltk_tscc | Added production 'Happro Demo' |