Gamebryo

So that's an unusually short, noted by journalists at the time, it was an unusually short window for a AAA release.

It shipped on the same Gamebryo engine and toolset as Fallout 3 and reused a lot of that game's assets, mechanics, rather than rebuilding from scratch.

It was a kind of deliberate trade-off for the speed that it needed to get to market.

Did well, though, sold roughly five million copies and generated about 300 million in revenue within its first month and is now estimated around 11.6 million copies sold worldwide over its lifetime.

Um, but it was like a dead engine that they picked up from the grave and decided to use it.

Gamebryo.

Gamebryo engine.

Gamebryo.

Yeah.

Yeah.