The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From NER Brothers:
####### Now Free for 48 Hours!! #######Glow Doodle Tennis is a remake of the retro game Pong with the beautiful glow and doodle style of "Glow Doodle Snake".A must have for all Pong fans.Glow Doodle Tennis has the following features:* It's totally free* Glow & Doodle style (like in "Glow Doodle Snake")* Innovative Tilt & Touch Control* funny soundsAfter much hard work it is finally ready. Ner Brothers wishes you wonderful holidays and hopes you enjoy our Pong remake.We are always open for suggestions!note: "Slam" the ball for extra speed!