 Using their technology, the company opted to produce commercial emulations of arcade games, such as Williams Electronics' "Joust", "Defender", and "".For these games, Digital Eclipse developed a interpreter that emulated the games' arcade machines' chipset, including the Motorola 6809 central processing unit.This approach was meant to have the emulations act true to the original versions of these games, and not carry any imperfections direct ports could have introduced.