Clarly written at the bottom of that page :
Not much use for a game then, since the textures need to be distributed for the game to work.
These textures can't be used for comercial purposes in any way without explicit permission from the autor. The distribuition of any part of these material , in any platform, including another website, are prohibited.
Not much use for a game then, since the textures need to be distributed for the game to work.