While jetpack joyride is an incredible and highly influential game, it doesn't hold a candle to Dead Space (Mobile), released in 2011 for iOS and Android. Dead Space (Mobile) is a true work of art, a piece of digital gold. In one breath, it expands the Dead Space universe, creates a genuinely console-esque experience, and still fulfills the need of mobile games to be a pick-up and put-down experience with plenty of good stopping points and autosaves. It takes advantage of features only present in smartphones at that time, utilizing them in ways that don't feel slapped on but rather as a genuine improvement to the game overall. While it did feature a microtransaction store, the entire game could be played without ever touching it. No content was locked behind a secondary paywall, just the measly $6.99 it costs to purchase initially.