As the Xbox 360 turns 20, we celebrate its most influential and memorable games – both exclusives, and those that came to the console first

Originally featured as a minigame in Project Gotham, this 80s-style twin-stick shooter was rebuilt as a standalone digital-only release, attracting a huge new fanbase. Fast, frenetic and super stylish, with lovely vector visuals, it was the game that first showed the potential of Xbox Live Arcade.