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 Christopher Ong:
Love playing Piano Tiles?Wish there was a zombie version?Here you go!Blast the zombies!Play your favourite white tiles game, now in Zombie Mode!Tap tap TAP the zombies and kill them!