you mean a cartoony game? you'd need a cartoon shader to get the cartoony effect, you can find one in the ultimate shader thread on the DBP forums. that is if you have DBP. if you have DBC you'll have to have to copies of your model, one should be a slight bigger than the other one and should be inside out(all polys inverted) and have a black color, positioning it at the same position of the original model should give an outline effect.
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