Game Cheat Code

Higher Score:
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If you are riding a level 1 or level 2 bull, try and keep your blue
target in the yellow area and not in the green. This will possibly
give you more points, though I have tested it numerous times and it
tends to only work about 60-70% of the time. Nevertheless, worth a
shot.
Bucking:
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If you're riding a fairly easy bull when you are in the green zone,
left click your mouse and the bull will buck, thus giving you more
points. Also press the space bar. This is the same as clicking the
mouse for a good buck.
Spurring:
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A method that will help you is 'spurring'. Spurring is when you are
riding, you take the heel of your shoe and kick the side of the bull
using your spur (this also gives your more points). To do this in the
game, press the "S" button repeatedly to spur the bull and get more
points.