It comes in two versions:

SX- free, two quizzes at the moment - https://play.google.com/store/apps/details?id … leswalter.dgqsx
DX - six quizzes (and more to come), hundreds of screenshots! 😀 - https://play.google.com/store/apps/details?id … leswalter.dgqdx

I tried to capture the "DOS feel" - right colors, right font etc. And the beep sound after selecting a quiz was recorded from my Am5x86 retro battlestation 😀

Feedback appreciated 😉