Clarification on 'Doom Clone' status – Hell on Earth Lite (3D FPS) - FREE Review

The Doom app for the iPhone is open source. You can actually get the entire app from iD's site(if they would fix the link, that is) and use it to make your own levels, though as Carmack notes, "you are on-your-honor to buy a copy from the App Store before using the data." Data being the textures, sprites, maps, sounds, etc. that the original game uses. The actual engine itself is apparently free to use. These guys (and others) simply built custom levels for the engine and put it on the App Store. Think of it more as a Total Conversion mod then an entire game. As a side note, someone should slap some custom textures on the Hell Revealed/Memento Mori maps and put it up here. I don't know if the original WAD authors would like that, though.
Review by Gamiac on Hell on Earth Lite (3D FPS) - FREE.