In addition to shooting things, your character in Crysis also has access to a power suit where you can switch between different kinds of fighting styles. Go for strength and you can lunge barrels, people and even knock down jeeps with your fists. You can also knock down walls and ceilings of certain buildings, freeing you from the usual "Why can't I shoot down a wooden door?" feature so common in other FPS style games. Another setting is self-explanatory; Speed increase your run for a short time until your energy runs out (you regain your energy automatically). Stealth mode makes you harder to detect by enemy forces as well. Even weapons mode allows you to customize weapons via new additions that you can put on your firearm on the fly. Mention must also be made of Crysis's physics engine which allows things like jeeps to be shot in individual pieces rather than all at once and explosions that can bring entire buildings on its ears.