But over time the house's edge has increased. Blackjack was very close to a breakeven game in the infancy of the casino gaming boom. The evolution of Blackjack is a perfect example of this. Most often though these changes are very subtle and presented in such a way that the player doesn’t even know a change has occurred. Sometimes they are old games with a new twist and sometimes the games include a new and exciting bonus feature. The casino gaming environment is a dynamic environment.