Complex sentence: Upon release, the game sold more than two million units in the United States, and received positive critical response, with reviewers noting the game built on the successful formula of its predecessors by adding more games and expansive environments.
Split into simpler sentences: Upon release, the game sold more than two million units in the United States, and received positive critical response. Reviewers noted the game built on the successful formula of its predecessors by adding more games and expansive environments.