How to make a computing course interesting

Was thinking of designing a computer game (not sure about the technology) sort of like Snakes & Ladders without the snakes and ladders. This would be a game where only 1 person plays. It would be set up like a board & the student would have a real dice to throw. Each block on the board would give the student a task to do: like open a file in a certain location, or bold a word or cut and paste etc. When they have completed this task they will get a message: animation or noise or something saying well done or great now you can move on. Then they throw the dice again & continue around the board. They would have to keep playing until all the tasks on the board were completed. There will then be more exercises for them to do, I'm not sure how to make them interesting yet. Maybe a rally (without the car) where you have to go to different locations eg My Documents to get files which contain part of a message, then you have to put the message together in the correct order. That would be easier to do. Then maybe after all that we could have a driver's licence test where if they can do all the tasks in the test they get a chocolate fish ( not sure whether it will be virtual or real) & maybe a certificate.