I have yet to play either. But, while I will be owning a Maiden when the prems get released. I will never, ever, EVER play a metallica pinball machine. I know people commented on the music for maiden not being their cup of tea. But, I HATE Metallica. I hate their music, and just everything about them. I believe they sold out heavy metal and went trendy which is against what heavy metal is all about. So me personally, I don't like them, never will, and I can't abide anything to do with them... Yes, I know they have good taste in music. They regularly have Armored Saint open for them, and also Kirk Hammetts favorite guitarist is Michael Schenker. And Schenks is the greatest guitarist ever... And I know Lars was a big fan and good friend of Dio... But, I just don't like them. I only commented because I got sick and tired of hearing all the people on the Maiden pages say... Hate the music, never a fan of the music... Well, not a fan of Met's music. And if I spot a Met in the wild I will keep on walking.

It might be silly to you. But, I took a lot of shit growing up being a fan of maiden and old school metal. Can't abide Mettalica. Never will, and I instantly change the station if they come on when I'm listening to the radio. And while I love pinball... I just can't stomach them. James Hetfield makes me sick with how stupid he is. They're a band of assholes. From how they treated their old replacement bassist, to how they kicked Dave Mustaine out of the band, and then released songs he wrote for them, but didn't give him any credits...
Also, they also had a tendency in their career to claim songs that they covered were their own songs they wrote. They would pick obscure songs from other countries and play them. And try to pass it off as their own... So... Might be an amazing pinball game... But, I'll pass...

And I'm sure there are lots of games out there that other people will never play. I mean I hear a lot of people hate Hardbody cos of the theme... So I can't be alone... And really, its this one pinball machine... So I doubt I'm missing out on much.