The only example I can think of off the top of my head is my rule when I play Final Fantasy Tactics: never ever cast status-altering spells. They
will miss because the RNG is your
enemy. The RNG holds nothing but contempt for peons who think to cast ailment focused spells. Even if the RNG deems it that you should be fortunate and sleep or paralyze an enemy, it won't matter. In like freakin' 2 turns or sometimes not even one full turn the effect will wear off and your face shall be cut off and fed to a lion. Always use damage spells! They are
always better, and that damage lasts for much longer than one bloody turn.
Note: Dancers, Calculators and that Galaxy Stop spell are notable exceptions that brute force that unfair rule by rolling unfavorable dice at so many enemies at once, that something in your favor just
can't not happen.
In recent memory: I play this iOS game, Bike Baron, a bunch. Sometimes its physics system
feels like a big ol' pile of bad luck, ready to fall on your head at the worst possible moment. You're beginning to master a level, zooming through the first three quarters of it with ease. You finally glimpse the finish line but fall short. No problem, I'll finish on this next attempt. But then I swear the physics engine changes its numberonomicons at times like these. Suddenly, I can't pass the first fourth of the level. Over and over I fall. But but but but I'm doing THE SAME THING I'VE DONE THE PAST 67 TRIES!?! Why is my bike suddenly behaving so unpredictably

Mean, meanie head physics.