From Strategyinformer.com: "It started with a 3D engine. Like most PC developers operating into the new century, Firefly Studios (known recently for Dungeon Hero which, sadly, has yet to see the light of day) had to find some way to compete in an ever changing industry. For the first couple of years, the faux '2.5D' was enough, but eventually developers had to wise up to fact that only full 3D was going to take PC gaming through to the next level. Stronghold, their flagship title released in 2001, was one of the last great 2D games in a world that was fast moving into the third dimension, and Stronghold 2 was the series' debut in 3D in 2005. According to the studio though, that's one of the areas where they went wrong."