I remember Materfall too.
In branding as I remember (and for many other things) it was a best practice of using word of two of maximum aprox. 7 characters and 3 syllabes and using words that people may remember. It's good if its somewhat related to or describes the product. But also with some change like changing a letter or merging two words to improve SEO.
There's also words that work specially well or that are used by other successful titles (not only in games, but in everything like movies, comics, books, tv shows...) so also helps with SEO to show your product in searches when people are searching the other one, but it's dangerous because can overshadow yours.