From publisher blurb: Year Zero Nano (YZN) is an even lighter off-shoot of Year Zero Mini -- both of which are designed to provide lightweight frameworks for quickly jumping into your favourite setting. Where other rules-light games might emphasise action or heroics, YZN is more down to earth - telling stories of a more gritty and relatable nature. SIMPLE D6 DICE POOL SYSTEM Using the Year Zero Engine as its basis (covered by an OGL from Free League Publishing), YZN uses a pool of standard six-sided dice, but differs slightly by looking for both 5s or 6s in the rolled dice pool. SUITABLE FOR ONE-SHOTS OR CAMPAIGNS While YZN is best experienced in one-shots, conventions, or short campaigns (around a dozen sessions), it's also suitable for longer-term play.