The Uncharted series includes three of the best games on the PS3. When the first title, Drake's Fortune, hit the shelves in 2007, its cinematic storytelling, great characters, beautiful visuals and absorbing gameplay put it head and shoulders above anything else on the system. For the second and third instalments, developers Naughty Dog knew they didn't have to change anything about the game to make it brilliant, other than adding some totally unnecessary multiplayer.
But the series has a limited lifespan if it doesn't deviate from the formula that made it so successful. Uncharted 4, if there ever is such a thing, won't have the same appeal as its predecessors. Uncharted 5 probably can never be made, unless it goes in a totally different direction. Naughty Dog know this as well as anyone.
There are two options here. Either they could reinvent the series, like Irrational did with BioShock, making the new game different enough to be interesting but not too different so it can justifiably keep the name, or they could make an entirely new game.
