The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Douglas Bodkin:
Operation Pluto is a space adventure game that takes you on a journey through the solar system, traveling from Earth to Pluto and back. You will have to navigate a MD3 space shuttle around dangerous meteoroids and aliens on your way from planet to planet. The shuttle is equipped with a laser ray gun that you use to clear your path. You will also have the opportunity to collect power-up stars to assist you in your mission.