Nintendo's (NTDOY) app-based game Super Mario Run is fading fast from the leader boards less than two weeks after it was released on the Apple (AAPL - Get Report) iPhone and iPad.

After making its iOS debut on Dec. 15, Super Mario Run held onto the top grossing spot in the U.S. iOS app store for five days, far shorter than Nintendo's free-to-play augmented reality game Pokemon GO which retained the number one spot for 74 days after its July 6 release, analytics firm Sensor Tower reported, according to Forbes.

The game's slip in popularity is being attributed to the $10 fee it carries.

While Nintendo markets Super Mario Run as a free-to-play game, users are being hit with a $10 paywall after only the third level.

Nintendo announced before the game's release that there would be a $10 fee, but many consumers who downloaded Super Mario Run were unaware of the paywall and took to Twitter (TWTR - Get Report) to voice their frustration.

User @imjennuine tweeted "It's all fun and games until you have to pay to unlock the worlds #supermario", and user @jasondunn wrote "Is anyone else a little dubious about the hype on the new #SuperMario iOS game? $10 for three hours of gameplay? Maybe it's REALLY fun?"

On Tuesday Super Mario Run held the seventh spot on Sensor Tower's top grossing leader board.

The game will be released on the Alphabet's Google (GOOGL - Get Report) Android in 2017.

Shares of Nintendo were up 4.08% to $26.06 in early afternoon trading.

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