I downloaded and did some testing.
Start-up time is quite excessive.
The executable launches right away, but then leave 25 seconds staring at a black window before game loads.
I used ResourceHacker angusj.com/resourcehacker to browse through the SpaceBlaster.exe file.
It is full of cruft that, as far as I can tell, are not used in this application. Numerous icons for volume control, printing, pause and play controls, and more...
109 superfluous graphic resources that are bundled with the exe file. Do you have any idea why that may bee the case?
See for yourself:
Download ResourceHacker (link given)
Open SpaceBlaster.exe with ResourceHacker
Browse through "BINDATA"