That's 6...one not out, one in a different genre, one a remake...
I mean HD remakes are cool when it's ICO or God of War collection or something, with completely unchanged horrible graphics. But this one isnt? Amazing!
Nobody bitches about, omg 4 Uncharted games in 3 years kill me already.
This Halo is milked stuff pisses me. It's actually the least milked of the main franchises.
I mean, if we choose to ignore Mario as the exception (otherwise he'd rape this award), even a franchise like God of War has 7 games in 7 years if we're going to include HD remakes.
If you look at all the major franchises since 2001, I think Zelda is the only one that has less games than Halo (or ratio of games released:number of years since first title), and I could even be wrong on that one if we include Gameboy and DS games.
I think maybe even Gran Turismo has more games since 2001 than Halo.