If there's going to be an achievement system, I'd rather have something like getting 100% in a game gives you 10 My nintendo coins vs achievement points or fake trophies.
The best system would be to get eshop credit for 100% completion, like $1-$2.. It's not much, but it increases eshop sales which already have high margin in profits, and encourages full play through of a game, which should equal higher satisfaction.
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VIDEO GAME MUSIC MASHUPS







