Power Ups have always been a part of platforming games, there is the mushroom, the star and the fire flower in the first Super Mario Game, there is the shield, the power sneakers and the invincibility in the first Sonic game, there are the famous inhalable enemies in the Kirby series, there are the crazy gameplay twists in the Super Mario Galaxy games, there are the transformations in Yoshi's Wooly World and many more.
Power ups have always been used in platformers to vary the gameplay, and empower the player. Interestingly the way platforming games use power-ups changed drastically over the years. In the beginning they often just granted a short period of invincibility or a small gameplay upgrade, but nowadays they often completely turn the gameplay on it’s head. The interesting thing is that, in my opinion the very first Super Mario Bros. game found the perfect way to grant the player special abilities, and recent games are more and more losing focus on what makes a power up feel really great and well integrated into a game.
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