Separate Installation?

I don't know why BI and Incubation uses the same install? I'm only interested in Incubation. Saves more hard disk that way. My PC is old anyway.

Just my opinion...

Yeah it is a bit strange that they bundled Incubation into the Battle Island collection.
But in the installer under options you can choose which games to install. Unfortunately you'll still need the whole 1.1 GB installer package although a 300 MB installer only for Incubation would probably suffice.

Not really, it's from the same series and at least some European releases had the tagline "Battle Isle Phase 4" (the German release certainly did). It's a more legitimate part of the series than History Line. :P (not to mention The Andosia War <.<)

Yeah I know about the Battle Isle Phase IV tagline, I am from Germany and was into PC games for some years when it came out. But you are right, it belongs more into this package than Andosia War.
But it is tiresome for some people to download a 1.1 GB package to get a 300 MB program (or even less if you just want BI 1 or 2).