Card or skill game location

[ymyke]

Play some little game and the better you are the better the card you get (at random) in return. Or the better a skill you can chose?

Ideas for minigames:

• Guess the number: The computer picks a number between 1 and 100 and you have to
  guess it. The computer tells you whether your guess is too high or too low.
• Rock Paper Scissors for x times.
• Perform calculations ever quicker.
• Keep up with typing text that gets produced ever faster.
• Press keys as they appear on screen as quickly as possible.
• Snakes/Tron
• Frogger

(Implementation note to make potency-based selection robust: Pick all cards and sort by potency descending with a cutoff at a potency corresponding to the level the player achieved in the minigame. Then pick a card from this list at random, but with heavy emphasis on the beginning.)