**Who bankrolls game developement? **
Publishers, though sometimes the platform developers put up some money as well. And see the next question…
Why don’t the big money guys (the platform developers, right?) publish and develop their own games. Or do they?
They do. For example, Microsoft owns 1) a hardware branch that produces the X-Box platform, 2) a game publishing branch that publishes games, and 3) game development studios that create games.
The same is true for Sony and Nintendo.
**Do all publishers have a developement arm? **
I believe all the major publishers do nowadays, yes.
I know Rockstar Games(publisher) has at least 2 development, um, departments.
Rockstar Games is not technically a publisher. It’s a developer that is wholly owned by Take-2, a publisher with development arms.
Is Microsoft Games Studios a developer or a publisher?
Like Take-2, Microsoft Games Studios is both a publisher and a developer.
And what is their relationship with Ensemble Studios?
Ensemble Studios is an independent (i.e. not owned by Microsoft) developer that nonetheless works very closely with Microsoft–Microsoft has published all the games that Ensemble has developed to date.
What do these various entities do?
Developer : Creates the actual game.
Publisher : 1) Finances the creation of the game, 2) Advertises and promotes the game, 3) Brings the game to market either by dealing with a distributor or by distributing the game themselves.
Platform Developer 1) Creates and markets the hardware platform, 2) Licenses the right to develop games for the platform to developers (by selling development kits), 3) Licenses the right to sell games for the platform to developers (the platform developer generally gets a cut of each unit sold even if they aren’t publishing the game.)