Not only does this degree of observation improve your own gameplay, but it also gives the game an intriguing psychological warfare element. When used properly, bluffing, a sophisticabonus gameted rummy tactic, can completely change the outcome of a game. By making your opponents doubt the strength or intent of your hand, you are essentially bluffing. For example, you may discard cards that appear insignificant while keeping important cards for your melds if you have a strong hand and wish to trick your opponents into believing you are having trouble.