I discovered that there might be a little bias ... I also rolled a 1 on a d12 but the d20 gave me a 16 on second roll and I needed less than ten rolls each to get a twenty on all three dice and I regularly hit million to one chances against me nine out of ten times... was playing the Minecraft boardgame last night and out of ten RNGs double potatoed four times (at the time a three in a hundred chance each) and triple potatoed once (at the time a six in a thousand chance), of the other five times a double potato in two cases could not have lost me the RNG (so of course I got the best possible score I could have), two cases where a double potato would fifty / fifty have lost me the RNG but the prize was small and one case where I got an average result that narrowly let me win the RNG. And this was a good day for me... the other players in these games generally end up feeling sorry for me at the very least (once they even offered to change the rules just for me!) So I only play RNG games that can be massively tilted in my favour (so I can get average results) or have ways to avoid the RNG entirely - it's not that the RNG wants the other players to win it just hates me in particular! :P :D - the killer for me was that out of tens of thousands of D100 roles the only 100 I got killed my character stone dead, it was (because I play conservatively and RNG hates me) the only critical failure role I've ever had to role... stone dead, in a "tournament" where new characters was a no-no and we just entered the first dungeon in the first game and I was the healer, so RIP my group. Was never asked to play with them again. If ever there was a circumstance in which I needed not to hit that 1 in a hundred that was it... but RNG hates me in particular.
But back to the game... it is clearly weighted in the player's favour... once you upgrade to the max... at the start make sure you have a backup chance or three, D4's are notoriously fickle! :D (just like dragons ;)