Quoted from Frax:See, I don't get it......couldn't you make the same point about Casino Run on Jackbot? It's a total crapshoot what you get, and sometimes you will get billions of points, and other times you will get a bomb on the second pull (Which on MY game is instant death because I have early code that you can't cheat out 1 bomb.....you just lose everything lol..). It's one big huge mystery mode.
What players will and won't accept with regard to randomization is sometimes very... random.
To the OP, Soren spelled it out pretty well above. If you're not including high level players, just about any game is usable. If it's a casual tournament, even random software awards don't really matter all that much. Just have fun.
Also, I will vote the best random award in pinball is "Double or Nothing" in Vegas. Nothing quite like having rolled the game only to have a bullshit mystery award reset your points back to zero.