Suggestion: If you think a game is broken, report it to the casino. Remind them that their license obliges them to supply fair games (though do remember that "fair" does not equate to "you will win"), and explain your reasons as to why you think the game is not fair. If you don't get far, report to the UKGC/MGA etc. If a game IS rigged, enough reports will trigger an investigation, and there will be consequences. No reputable provider will be wanting to supply rigged games, especially ones such as Bonanza which are perpetually in their top games lists.