Need for predictable random generator

Question

I\'m a web-game developer and I got a problem with random numbers. Let\'s say that a player has 20% chance to get a critical hit with his sword. That means, 1 out of 5 hits

Answer 1

Surely any random number generation has the chance of producing such runs? You're not going to get a big enough sample set in 3-10 rolls to see appropriate percentages.

Maybe what you want is a mercy threshold ... remember the last 10 rolls, and if they haven't had a critical hit, give them a freebie. Smooth out the slings and arrows of randomness.