Indie developer Supergiant Games have excitedly shared (via Shacknews) that their debut title Bastion has capitalised on its critical acclaim, having sold over 500,000 copies -- pushing past the milestone thanks to the recent holiday sales on Steam and XBLA.

We’re happy to have this many people playing and to be in a position to make more games on our own terms. When we set out to make Bastion, a sales number like that seemed astronomical to us, so it feels great to have hit that mark. It goes to show that a lot of folks out there like what we’re doing and want us to keep going, which is great, because we intend to stick together as a team and do just that.

It's always great to see success from new studios and we were especially impressed with the deserved attention that publisher Warner Bros gave these guys at E3, so congratulations all around.

If you're not one of those half a million people, you can find out our thoughts on the game in this colorful review (AusGamers 8.5/10) and get some quality insight into the development process with our Interview with the Creative Director (and ex-Gamespot editor in chief) Greg Kasavin.