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 Carey Green:
Moon Jumper is a fun run and jump game. Go to the moon as the intrepid moon jumper and collect the air cans before you expire! It is simple and fun for all ages. Master your jumping skills as fast as you can!