The second generation of My Little Pony was a huge bomb in most countries and is widely considered the Dork Age by fans. It lasted only one year in all countries except several European ones, where it lasted six years. Naturally, most of the generation's fans come from Europe.
IKEA's "Lufsig" wolf plushies experienced a huge surge of popularity in Hong Kong and China after a protester threw one at Hong Kong's leader CY Leung, who had been called "the wolf" by critics who think he is cunning, and as a pun off his name in Chinese). That and the rather unfortunate name Ikea's Chinese website gave the toy; which could be used to refer to a part of a Mother's anatomy, and even worse, a phrase essentially meaning "Throw Lufsig" that could be read as "fuck your mother".
Pogs in Mexico, known there as "Tazos", were introduced in 1993 starting out with a Looney Tunes theme, and lasted all the way up to 1996; during these years, you could see crowds of elementary school kids striving every day to hoard more Tazos than their fellows, and nothing imposed more respect on the playground than having a huge bag full of Tazos. They have since been reintroduced regularly every couple years with predominantly good success.
Myscene dolls are still being sold in Canada and Mexico despite being removed from store shelves in the US in 2010.
BIONICLE and some other LEGO action figures have historically been successful the world over. But around the early-to-mid 2010s, most of the popularity of such lines seemed to come from Europe and Russia. Bionicle (2015) got exclusive polybag promos and a two-issue magazine containing bonus models in these areas, and as alleged by fans, the toys seemed to sell well enough, whereas in America they got put on clearance almost immediately after release (even though American toy prices are in general way lower to begin with). The final Bionicle wave also saw a limited release in the States and no release at all in the Asian-Pacific region, but they were released as normal in Europe.
Hasbro loves to Spoil China and Canada with Kre-O.