Recently I saw a comment in the Hostage Negotiator forums suggesting the engraved dice may give disproportionate results. Another post on the topic analyzing 100 rolls of all six dice seemed to disprove that. It showed a relatively even distribution with just a minor deviation in favor of the fifth die face.
I know it can "feel" like dice are against you in any game but has anyone tried an empirical experiment with the dice in this game?
You can try the water test -- float a die in a glass of water and flick it. Eventually it will stop spinning. Do it a bunch more times and see if the same face always comes up. It's essentially the same process as rolling a die on a table a million times, but because there's very little else affecting the movement of the die, any fault in the balance should appear much more quickly.
As they are not Casino quality dice (those are ridiculously expensive btw...) I am pretty certain that if you do a test of, say, 1000 rolls on a flat surface with a mug to rule out your wrist-flicking influence and such and note down the results you will note a statistically significant imbalance toward one side or another. Seriously though, I doubt it makes a difference in normal boardgames (as opposed to gambling in a state-controlled environment like a Casino for real money!). The way you move your hand, where the dice bumb against stuff on the board etc. certainly have a greater influence on the outcome of the dice roll than a slight imbalance in the plastic. If it really bothers you that much, I'd recommend to play games without dice .
Currently working on Perdition's Mouth Board game content
Imperial Assault - Imperial Player
This is not a general rule. But some dice can be bad. We had to remove an extra attack die in Descent after heroes rolled 8 misses in a row (plus around five others not in row). This gave the overlord huge advantage as the dice he used rolled normally.
Both dice were engraved so in theory they should have similar characteristics if "engraved" was so important.