From publisher blurb: Let’s Roll! The Roll For Infinity adds new and expended dice rolling mechanics to Big Damn Sci-Fi. While we have retained the simple pass or fail mechanic of Big Damn Sci-Fi, this Core Companion now brings with it a greater range of features including: Critical failures. Exploding successes. Multitasking. Combat manoeuvres. Adjustable combat difficult. So what are you waiting for? Let’s roll!