For the bikers to have larger heads, simply type "big heads" at the main menu.
Get up faster
Once you fall you press tab and you will get up immediately.
Hints
Keeping your balance and adjusting the pitch of your bike while in the air is a key to Madness success. There are two ways to do this: you can either move your rider fore and aft, or you can work the gas and brakes to spin or stop that rear tire. Get comfortable with both and you'll find yourself crashing less and riding more.
As great as your bike and rider look up close, you'll want to pull the camera back quite a bit for a good look at the nearby surroundings and to ensure your entire bike is onscreen at all times.
There's more than one way through virtually every course, and sometimes it's not very obvious. Outdoors, you should explore through the foliage and memorize the results. Indoors, you can often set up your bike and modify your line to take an entire section of bumpy roadway in a single jump.
Huge Air Tip
Go to the end of a map where there is a big hill that goes straight up and go a fair distance back and race full speed towards the hill. With a bit of luck you should make it up the hill. Once you're up, keep going forward and eventually you will be blown really high up in the sky.
Note: The landing can sometimes throw you off your bike.
Note: This can not be done on the supercross tracks!
Nosedive Wheelie
To do a nosedive wheelie, gain at least a top speed of 85 MPH, then select a small jumping ramp with a clear landing space to perform this stunt. Before you land, lean forward into the handlebars until your bike is completely vertical. Hold the brake button and you should be able to keep your rider on the bike for one of the coolest tricks, a nose wheelie, which looks really cool!
Quick Recovery
Press the [TAB] key to reset your player immediately on the bike to continue racing. This is extremely helpful if you're racing others and you fall. You don't have to wait for the cinematics of you falling or waste time getting back on the bike.
Rainbow Studios
When playing, press [ALT]+[TAB]+[A] like you meant to switch screens. When you open up MCM2 again, the ground will be Rainbow Studios' pattern. To remove this, simply restart your race.
Wierd colourful ground and costume
While playing the game press the windows key that opens the start menu. It is to the left of the space bar. after doing this the game will go to the desktop and the start menu will appear. re-enter the game by pressing the minimized version at the start bar/toolbar. There will not be wierd ground and costumes.
Big Head Mode...