On a knitted island filled with many Yarn Yoshis of varying patterns, the evil Magikoopa Kamek turns nearly all the Yoshis into bundles of yarn for his master Baby Bowser, scattering them across different worlds. However, two of the Yoshis manage to avoid being transformed themselves, and they set off to pursue Kamek and rescue their woolly friends. After traveling through 6 different worlds, Yoshi manages to storm Baby Bowser's castle. When Yoshi reaches Baby Bowser's castle, Kamek reveals that he stole the yarn so that he could use it to grow Baby Bowser to a much larger size. After battling Baby Bowser, the Yoshis rescue their friends from Kamek and Baby Bowser. Kamek and Baby Bowser try to fly away, but crash land on the moon, where they are left deserted by the Yoshis. After the end of the game, Poochy can be seen at the back of the moon, sticking his tongue out happily.
There is a Mellow Mode which gives Yoshi a pair of wings, allowing Yoshi to fly indefinitely through a stage.
A port for the 3DS Poochy and Yoshi’s Woolly World has a unique mode where the player controls Poochy through a level, with only the ability to crough and jump, running to collect Poochy Pups and beads.
F.A.Q.
Each level contains 3 types of collectibles: 5 Flowers, 5 Wonder Wools, and 20 Stamp Patches which must be collected as well as finishing the level with full health in order to earn a star and flower icon on the level.
Unlock Boss Challenge Mode: to unlock Boss Challenge Mode, the player must defeat Baby Bowser.
Unlock Special Levels: to unlock the Special Level of each world, the player must collect all 5 flowers in all 8 levels of a world to unlock that world’s Special Level.
Unlock “Wonderful World of Wool”: to unlock the final stage “Wonderful World of Wool”, the player must collect all 5 flowers in every level of every world.
Unlock Shiny Platinum Yoshi: to unlock Shiny Platinum Yoshi, the player must collect all of the Wonder Wools in the game.