Nintendo might be most well-known for putting out systems that appeal to a more casual audience, but considering just how many developers are eager to make games for these consoles, it's inevitable that there would be at least a few games that end up being much harder in their overall difficulty. The 3DS is a prime example of this, having a plethora of titles that many people consider to be pretty challenging, and in some cases, downright unforgiving in how they play.