As you can see in the menu bar of Space Quest 1 EGA, you can get a 
maximum of 202 points. But if you know some tricks, you can actually get 
205 and even 207 points! Here are some tips:

- When you've entered the Deltaur through the airlock, get inside the 
trunk as usual. When you've reached the laundry room, exit the trunk 
and close it. Climb on the trunk and use your army knife to open the 
vent. Climb in the vent and return to the laundry room again. This will 
award you with some extra points.

- You'll also get an extra point if you kiss a Sarien guard. Scott 
Murphy adds: "Kissing the Sarien was all Ken Williams' doing. We let him 
do some programming and just because he runs the company he thinks he 
can do whatever he wants. Go figure."

- Try talking to a Sarien guard. When he asks you if you've played 
King's Quest II, say "yes".

- Get the second grenade in the weapon room after you've dropped the 
first to kill the Star Generator guard. Simply give the droid your ID-
card again and quickly take the other grenade.

This will earn you 205 points! Game version 1.0X is slightly different, 
though. The One point score in the vents on the Deltaur has been 
re-allocated in later versions. In version 1.1a and 2.2 you get one 
point for exiting the vent back into the laundry room. In version 1.0x 
that point is found by entering the vent, going left to the ladder, down 
one screen and right until you crush your nose on another vent. "Kick 
vent" for the extra point. Here is the breakdown:

Version 1.1a and 2.2:
Ride trunk to laundry room (3 points)
Enter vent (2 points)
Kick other vent, one screen down (0 points)
Exit vent back to laundry room (1 point)

Version 1.0x:
Ride trunk to laundry room (3 points)
Enter vent (2 points)
Kick other vent, one screen down (1 point)
Exit vent back to laundry room (0 points)

BUT WAIT, there's more! In version 1.0x you can get 207 of 202 points! 
When the escape pod crash lands on Kerona, type "get kit", then "look 
kit", then "get kit" again and you'll take the Xenon Survival Kit twice. 
There will only be one in your inventory but you'll get an extra 2 
points - 207 of 202 (of course, you must do the other extra's described 
above)!

When you shoot a Sarien, you'll earn a couple of points. However, if you 
shoot another one, you'll start losing points (you're blowing your cover!
). Now, the interesting part is that there's a bug in the point system. 
Continue shooting Sariens until you've got no points left. When you 
shoot another Sarien, you'll get 254 points all of the sudden! 
For gun food, just walk out of a room, and return over and over again. 
Sariens appear at random.