Looking at other complex engines that can house bigger and more detailed environments, with minimal loading screens as possible. Gel physics in Portal 2 was a step up, but I thought the game just looked decent. In the past, Valve worked so hard to make a great all around game, with Half-Life 2. Will Valve ever blow us away again? Playing a game like Battlefield 3, with things like parallax mapping, displacement mapping and realtime radiosity... it looks ****ing brilliant. It seems though Valve are more concerned with making their games playable on all systems, but funnily enough... a DX11 game like Battlefield 3 looks great on the consoles at 30 frames. There is no reason why Valve doesn't just overhaul the Source engine, thoughts?