Quoted from 320Gigabytes:

I really wanted to like IMDN since it's so well regarded here, but I didn't.
I think you all ruined it for me! The expectations got so high that nothing could possibly live up to them short of a surprise pizza dispenser or something

Quoted from Chitownpinball:

Agree, agree, agree. Metallica is for non-pinball people. Bash, bash, bach. Iron Maiden has strategy and awesome shots. I play ours at least once a day when Im at the office. Love it.

Quoted from Guinnesstime:

Strategy yes, but different strategy.
Iron Maiden has traditional modes and goals, with several wizard modes available upon completing or starting modes, collecting items, etc. Modes vary in the shots you try to hit.
Met requires a bashing/hitting items to start a multiball, then using the multiball to bash the Gravemarkers, Sparky, Coffin and Snake, to try to light CIU. CIU modes play like traditional modes but it takes a hell of a lot of chopping wood to get to them.
Pinheads understand this, but for over 3 years owning the game, non-pinheads I had over probably started a grand total of 2 CIU modes at my house. They never get to see the coolness of that level of the game.
They LOVE hitting Sparky, Snake etc, though. Bash targets and easy to obtain multiballs are fun for them.

Quoted from 320Gigabytes:

Also the animations in IMDN remind me of a 5 year old slot machine, and there's not a laugh to be had.