So I did some searching for the amazing font used on the first three Space Quest box covers and I found it! FIrst of all I must mention a fantastic variation that Goatmeal created which matches the in-game titles for SQ1 and SQ2 (but which are slightly different from the box, namely the A having a flat upper side instead of a rounded point).
 
http://fontstruct.com/fontstructions/show/624609/space_quest_logo_font
 
He also did a font for the credits text:
 
http://fontstruct.com/fontstructions/show/678735/space_quest_credits
 
After some searching he found a close approximation of the text style but as a thinner font:
 
http://www.identifont.com/find?font=digital+sans&q=Go
 
Turns out the font is part of a larger font family pack called Digital Sans by Elsner+Flake. Unfortunately, they're not free and the whole pack is $350. Nobody happens to own this font family pack do they? lol
 
https://www.myfonts.com/fonts/ef/digital-sans-now/
 
They're not exactly the same, but "Digital Sans Now ML ExtraBold," "Digital Sans Now ML Black," "Digital Sans Now ML Cond ExtraBold," and "Digital Sans Now ML Cond Black" seem to be the closest variations in the pack! The differences between ML and ML Cond seem to be that ML Cond has a little more height. Besides the 'P' not being quite the same, the 'Q' has differences as well. But it's quite close! Here's an example:
 
 

There're many sq fonts (tag 'wilco')

Not the one used on the box.