Firstly, Borderlands is an extraordinarily good game.
Fortune favours the brave and Gearbox took some very bold decisions in
designing Borderlands. And they paid off big time.
Secondly, over the months following its initial
release, Gearbox released some amazing extra content available via
download (DLC). There were four of these add-on packs, each of which
added new levels, new quests and new enemies to an already huge game.
Originally the downloadable content was pay-for i.e. not free, but on
the Mac it's all included as part of the GOTY Edition!
So for all those reasons – we don't think it's boasting to call this Borderlands: Game of the Year Edition.