Following Frog Eyes
In the menu screen, click on the frog in the lower left hand corner. His eyes will follow the cursor until you click him again.
Contributed By: Evil-Iggy.
Stop The Stars
While on the space level which is the last level stage 13-1 you can hit "s" to make the stars stop moving which might help your eyes to focus on the screen better.
Contributed By: KMSSD.
To make the UFO appear on the menu screen, move your cursor over the menu buttons 3 times in this order:
Adventure, Gauntlet, Options, More Games, Quit
Contributed By: TStodden.
Open the file "levels.xml" in the "/levels/ folder" dir, then search for a line like this:
Settings id="lvl11" speed="0.5" start="35" score="1000"
Lvl11 stands for level 1-1. So search any level you want, and change the speed to 0.2.
Contributed By: GrAwL.