The original Crysis: still the best looking game ever?

[happydolphin]

CGI-Quality said:

happydolphin said:
omg tads, the explosion at 1:00 of the Armaggedon video was breathtaking.

@everyone. Can someone explain how modding works? Is it the ability of the user community to add textures to objects, or is there more? Can lighting be changed, physics, reflections, models?

I was impressed by the GTAIV mod and by the "Real Life" incredible lighting mod, and even the full immersion one. So breathtaking.

Some games have what you call "Mod Tools", that allow the PC community to modify the game within the kit. 

I was asking what was the extent to which modding is possible.