By 2003, you really mean end of 2004 – as that is when the first source engine game was released. I love number fudging.

And I think when Portal, Team Fortress 2 and HL2 episode 2 came out, it was clear that not only was source still completely adequate for current games, it also showed that you don’t need bleeding edge graphics to make an excellent game. Crytek further emphasised this point in Crysis by showing that great graphics do not make a good game.