Twix was created by Mars Limited in the UK back in 1967 while Snickers is a product of US based Private Corporation - Mars, Incorporated which is also one of the world's largest food and confectionary manufacturers.
Twix chocolate bar was available in 1979 in the US wrapped in a gold colored wrapper with orange text and it was branded as the Twix Cookie Bar. Before Snickers was created, there was a very successful chocolate bar called Milky Way in the early 1920s in America. This brand allowed the creators - Ethel Mars and Frank to expand and improve new recipes for chocolate bars.
A period of continuing sales of Twix through the early 1980s suggested Mars, Inc were happy with the performance of their, in fact the chocolate bar was not performing quite as well at retail and the hunt was on for a replacement or improvement which in 1983 came about with the peanut butter Twix. There was very little changed in the Snickers brand during its first forty years of production except in 1968 when Mars were inspired to produce the Snickers mini candy bar sold in bags of a dozen labeled with 'fun size'.
Snickers brand sparked a controversy in recent years with advertisements perceived to be homophobic, when two mechanics are seen sharing a Snickers and accidentally kiss when reaching the middle. The last major controversy related to Twix brand occurred in 2007 when Mars, Inc in Europe started replacing the whey used in their candy bars with animal rennet. This resulted in large protests and negative press publicity against Mars, Inc by vegetarians who were previously loyal to Mars candy because it was vegetarian.
Twix brands was also revised to compete in the ice cream space with frozen Twix bars making their way into supermarket and mall ice cream vendor ice boxes. Snickers had also introduced their branded products including the Snickers Ice Cream Bar. All of these products were well received at that time and either continued in production or withdrawn after the promo ended.
The sales Twix and Snickers chocolate brand have increased outside their traditional markets and they have been very positively received in every part of the world.
Twix and Snickers chocolate bars have been a successful products throughout their history and their sales have continued to increase and they have become popular brands for their manufacturers.