To be honest, the pre-release stuff pretty much pales in comparison to what we ended up with. I think maybe you' re talking about
THIS shady-looking "
Teh powar of DX10!!1!" trailer.
Well for the most part the jungle in the retail version isn' t actually as dense as in that trailer. It must have been done relatively early in the development cycle because quite a lot of stuff from the early videos ended up being different. The Nano-suit and weapons etc...
That said, the game is breathtaking. Birds, butterflies, bees, frogs, fish, chickens, turtles etc... it' s not perfect but the details are damn impressive.
This is the game running on my laptop and shows what to expect from the retail version...
This is denser custom map...
I' ll do a video for you showing the various jungle areas in the game to give you a better idea :)