Super Luigi U: The Timer Complex

Super Luigi U is a lot like every other side scrolling 2D Mario game.  You need to get from the beginning to the end of a level, there are special coins to collect, and hidden goodies along the way.  It's even more like Super Mario Bros. U than the rest because it's a redesigned version of the same game.  I haven't actually played the original one yet, so I'm not sure how redesigned the levels are, but there are three consistent changes throughout the game: No Mario (hooray!), Nabbit (nearly invincible playable character when playing with 2 or more players), and only 100 seconds to complete each level.

While the first two changes have their own fairly large impact to the game, the 100 seconds per level fairly drastically changes things for the better, with one side effect.  With only 100 seconds to play in each level, there isn't a lot of time to explore and test every pipe for secrets, so the secret coins have to be more cleverly hidden, but still be quick to reach.  Most of the time they'll be in a slightly harder to reach path or behind a hidden wall.  Some of them, I'm not entirely sure how you're supposed to get them without a sacrificial leap from a cooperative player (but I'm sure there are ways because all coins should be reachable with just Luigi alone).  100 seconds on the clock also means that at most, each level is only going to take a little over 1.5 minutes, which means that it's very easy to complete a given world within 30 minutes if you're not going for coins and not completing every level.  It also means that replaying a level over and over again to get those coins isn't as punishing.  With 100 seconds, there are no need for checkpoints, so you can't accidentally activate a checkpoint right after missing a Star Coin (thus having to play another level or beat the current one and play it again).

The side effect of the 100 seconds is that other Mario games have trained you to panic and rush when you hear the "Hurry up!" music that plays when a level's timer reaches 100 seconds.  Well, in Super Luigi U, every level starts with that noise and they certainly take advantage of the psychology by making a few levels here and there where you specifically have to slow down and wait right at the beginning.  Many a death was caused by the previous training from Mario games.

It's interesting to see how drastically a Mario game can change when the timer is so short.  It never really felt like I had to rush (unless I had stopped to explore too long), but it actually puts on the pressure of the clock that I haven't felt in nearly any other Mario game.  I generally hate time limits, but I think Super Luigi U finally made the timer in a Mario game actually purposeful.