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 General Arcade:
Love old school classic 3d shooters? Doomsday: Hellraiser for you! Youtube trailer: http://bit.ly/doomsday-trailerDoomsday: Hellraiser based on community project Freedoom and source code of Doom Classic. Freedoom resources is adapted to iPhone and iPod Touches, you will have more weapons, items and power-ups. All our work will be contributed back to the community. Features:- 36 level (4 secret levels)- Multiplayer over WiFi: cooperative and deathmatch- 9 weapons: Fist, Pistol, Shotgun, Chaingun, Rocket Launcher, Plasma Gun, Circular saw, Super Shotgun, BFG- Ability to add friendly dogs who will help fight monsters (go to Options -> Settings)- Customizable controls- 11 amazing soundtracks- Powered by Doom engine (id Tech 1 engine) - special enemy: drunk sailoriPad version also available: http://bit.ly/doomsday-hd