Jazz Jackrabbit 2+ in GOG screen settings
 

I?m glad that GOG now has a separate entry for JJ2+ that includes the *Holiday Hare* episode and the correct level order. However, I?m having a problem. The game launched in full-screen mode once, but subsequently, it only opens in a window. The standard *Jazz Jackrabbit 2: Secret Files + JJ2+* always launches in full-screen mode.
What can I do to launch *Jazz Jackrabbit 2+* in full-screen mode?

Thank!