If you've ever played an old adventure game from Sierra - so King' Quest, Police Quest, Space Quest, Quest for Glory, etc - you need to see this old documentary showing how some of those titles were made.

While the bulk of the clip is taken up with hyping the then-upcoming King's Quest VI, there are also interviews with Sierra co-founder Roberta Williams and footage of how the company' later efforts were written, scored and filmed.

Please watch it. Then join me in wishing Roberta and her husband Ken were still making games like this.