The new iPhone Mario game broke a download record – but is it disappointing?

That's a lot of downloads in just a few days.

Super Mario Run released on the iTunes store just days ago. It's already been downloaded 40 million times.

That comes from Nintendo, which tweeted a "thanks" Wednesday to everyone who has played. The company also says it's a record for Apple's App Store during a four-day span, The Verge says.

The game is Mario's first on a mobile non-Nintendo device, and is a constantly-scrolling version of the classic platformer that you can play with one hand. Here's a trailer.

Lots of downloads – but is it disappointing?

The game itself is free to download, and you get samples of each of the three games modes. For full access, it's a one-time payment of $9.99.

That decision – to give full access for a one-time charge, rather than load the free game with smaller microtransactions like most mobile apps – may actually be biting it in the butt like a piranha plant.

Even though the game was (according to estimations) downloaded millions of times on the first day it was available, the perception was that it underperformed.

The Wall Street Journal reported it didn't hit No. 1 on the download charts in Japan (though it did in the U.S.), and compared to Pokémon GO – which has raked in the dough with its microtransactions – Super Mario Run sales seem a bit measly.

Then there are the ratings and reviews. It's currently got an average of 2.5/5 stars on the iTunes store, with people unhappy with how short the free portion is, and also unhappy with the concept of Mario as an endless runner game.

That said, it's not available on Android yet – and Nintendo has said it plans to release it on that platform, which could mean a big wave of new players. And maybe in the long-run, the absence of never-ending and often annoying microtransactions will earn Super Mario Run some credibility with players.

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