Complex sentence: In 2007, Nintendo released the Wii Zapper for the Wii, a peripheral which is actually a plastic shell that houses both the Wii Remote and nunchuk for gun-style video games.
Split into simpler sentences: In 2007, Nintendo released the Wii Zapper for the Wii. A peripheral which is actually a plastic shell that houses both the Wii Remote and nunchuk for gun-style video games.