Metal Gear Solid 4 developer reveals truth about PS3 exclusivity - Xfire

Apparently, Metal Gear Solid 4 could''ve come to the Xbox 360 and there actually existed a working version of the game on the Xbox console.

News - May, 2023

Middle-Earth: Shadow of War File Size Revealed for Xbox One

PlayStation 3: Inside and Out - GameSpot

Classic PS3 title may receive huge remake on Xbox only

Metal Gear Solid 4 (Trailer) Exclusive To PS3 (Store)

Sony never signed its exclusive: revealed the reason why Metal Gear Solid 4 did not come to Xbox - Meristation

Metal Gear Solid 4 Was Never A Sony Exclusive, Apparently

PS3 2006 Year in Review - IGN

Metal Gear Solid 4 developer reveals truth about PS3 exclusivity - Xfire

Ps3 - XOG

Metal Gear Solid 4 developer reveals truth about PS3 exclusivity - Xfire

Konami confirms Metal Gear Solid 4: 25th Anniversary Edition is PS3 exclusive after New Zealand shop lists it for Xbox 360