Halo 5: Guardians sells more than $400 million (games and hardware)

[Insidb]

Hiku said:

Kyuu said:

the highest rated Xbox One exclusive, "And" the highest rated first-person shooter game of 2015 (So far, and on any system) No spin there.

If they meant "and", then there should be an "and" in front of the last subject. For example, "the highest rated Xbox One exclusive, first-person shooter game, game starring a masked man, and online based multiplayer game of 2015." Alternatively the sentence could end with something like "etc." indicating that there's more and implying that an "and" would eventually come.
But if they meant "and", but wrote it like that, then it's improper grammar.

Exactly, as I wrote in a post, if there are only commas and no "and," they are all adjectives describing the same object.