We'll have tennis and dirt-biking in Grand Theft Auto V, but can we not also have a dragon that breathes fire while someone (the dragon?) does the Skyrim Fus-Roh-Dah shout?
Yes, we can, thanks to the ever-wonderful mod community that keeps on tweaking the PC version of Rockstar's Grand Theft Auto IV. Follow YouTube GTA mod masters Taltigolt and Indirivacua for more of this kind of thing.
Grand Theft Auto IV - Dragon (MOD) HD [YouTube]