 A part of the game he felt tough was implementing an A* search algorithm for pathfinding in any in-game character which, depending on their numbers and complexity of the path, can cause a heavy load on a computer.Adams composed the game's flamenco-inspired music.A z-axis was introduced in the 2008 release because he felt the limitations with a single plane increasing; the feature of making various constructions like walls was also added at this time.