A Besieged style game where to player is given a set of parts to use in order to construct the best downhill racing car. Players would construct their car with the parts they have available and then race them against a computer controlled opponent. They would be able to control the steering and braking of the car during the race but there is no acceleration. Each level would have a new opponent to beat with different properties and difficulty. The baseline for completing a level would be to beat the opponent but there would be bonus objectives to complete that would award a better rank. For example, you must beat this opponent using only wooden parts. The player would unlock more parts as they progressed and as they completed the bonus objectives. These objectives would sometimes be wacky and so might the parts that you unlock for doing them. E.g. you must finish the level facing backwards. You would also be able to customise your creation with paints and decals. The game would use a realistic physics system to determine how things played out.

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