We have been independently developing games since the mid 90s, starting with DOS and working our way up to the cross-platform open source projects we work on today.
Our earliest games were made with Recreational Software Design's Game-Maker suite of tools. We moved on to developing DOS games using C. Our DOS games featured VGA graphics and digital music and sound. We started using Allegro in the late 90s, which eventually led us to our current state of making cross-platform games.