Aesthetically-speaking, SMB's worthiest successor was probably Yoshi's Island, apparently a sequel to Mario World but in reality a storybook-like prequel starring Mario's mount. Gameplay is distinguished from the mainline games by way of expanded power-ups, pseudo-double jumping, projectile-tossing and a far more forgiving 'health system', all taking place in gigantic areas with traces of puzzles and resource gathering. Most of the time - though, it's the joyous, catchy soundtrack (perhaps the best in the series, assuming that this could even be called a Mario Bros. game) and its hand-drawn visuals that prevail over these rather forgettable levels (save for a funny gimmick stage or two), while the unlock methods that made Mario World so special are reduced to collect-a-thon banality here.