Yes unfortunately. Both pins have very similar layouts. Fantastic pins both in their own right, but I think it would be a waste of space and pin money to own both the titles.

I have had both for over a decade. Yes, the similarities of the shots makes owning both in a small collection probably not a good idea. Both great games, but own the one with the theme you like.

Both are a basic fan. When launching the ball you can go for the skill shot in the two lanes (over the two pops). You can also hold the left flipper button to open the gate and go for the super skill shot. Both have a major toy up the center that you need to open. So yes they have many similarities.

AFM is a bit more open playfield. There are jiggley Martians around the edges and MM has the Trolls in the center.

I'm, sure the full comparison is well documented.

Exactly this, I was coming back to edit my post but Taxman be me to it. If space/budget aren't an issue, I'd own both these gems.

I know what I like. One can argue that Met, IM, Tron, and ST are also similar to each other. It didn't stop me from getting, keeping, and loving all four.

Fan layouts all have very subtle differences you really have to play a lot to appreciate. I also have a MMr and I for one can not wait to have its faster, alien invading sibling next to it!

Gameplay is so different despite layout. There is a lot more to the game than layout. I had both at one time and didn't even realize the layout similarities until someone on Pinside or RGP told me, asking why I would own both.

Attack has much much better balance in the rules and scoring.

MM has better toys.

I think everyone hates that the main lock shots are in the same place.

I own both. Have owned my AFM for 9 years and added MMR last year. Yes both are fan layouts but each game has nuances that make them different enough to live harmoniously in my 10 game lineup.

AFM is just a very clean layout with easily understood objectives. It's an easy game to get something going but tough to master.

MMR has a more nuanced ruleset and the ramps make the flow much different than AFM. The cow ramp is just tough enough to make it a flow killer IMO. While tourney strategy in MM is castle killing it is the exact opposite in AFM.

Both have outstanding themes and humor so I feel like they complement each other well.