Complex sentence: During the first two years of production, the team divided into small groups and worked on the game's elements separately; for example, Blackley programmed the game's physics, while Eric Twietmeyer and Tim Day created the terrain renderer.
Split into simpler sentences: During the first two years of production, the team was divided into small groups that worked on the game's elements separately. For example, Blackley programmed the game's physics, while Eric Twietmeyer and Tim Day created the terrain renderer.