Really impressive is the Dead Rising Engine (org. made for Sportgames). It is some sort of special instancing. Unbelieveable what the programmers did there.

Acknex umgibt uns...zwischen Dir, mir, dem Stein dort...
"Hey Griswold ... where u gonna put a tree that big ?"
1998 i married my loved wife ... Sheeva from Mortal Kombat, not Evil-Lyn as might have been expected
rayp.flags |= UNTOUCHABLE;