Following a pretty genre-defining first game and one of the best sequels of all time in Silent Assassin, the series stalled slightly with the floaty controls of Contracts, still turning in a great game but not one that had as much fan-reverence as part two. Enter part four, and the game that shall forever be referred to on playgrounds and in water-cooler-contexts the world over as the question tagged onto every future instalment; "But is it as good as Blood Money?". Absolution certainly wasn't, taking a series whose bread and butter was stalking targets through incredibly huge open areas and planning a hit just like a test-tube-grown laboratory-badass should do, and putting you in increasingly linear levels that also relied on Agent 47 developing Desmond Miles-esque Eagle Vision to mark opponents in bright primary colours. The series' magnum opus, BM gives you a fantastic array of memorable levels, each building in scope from the last and all allowing for you to think of increasingly tactile and hilariously-nefarious ways of offing your targets. Replay it specifically for: The ability to play around with the physics engine that props the game up, planning the perfect assassination by tinkering with the NPC animations and patrols for the sheer 'what if I do this' reward of the gameplay.