Because those of us with any brains have reason to fear the zombie apocalypse, shudder at the arrival of 2.8 Hours Later: originally infecting the streets of Bristol, and now spreading to the capital, this "city-wide zombie chase game" pits undead hordes against "survivors", whose aim, rather than to beat any particular time, is to simply make it to the secret "safe" location, which could be anyplace not named "Canning Town".
Things kick off when the sun goes down, with groups of 6-8 released in waves, armed with a map pinpointing the first of several secret locations, which will all be "transformed into zombie film sets and populated by a cast of survivors", who themselves will drop clues as to the next holdout -- so you'll be picking their brains even though you're still alive.
The whole time, you'll have to avoid groups of costumed, fully trained living dead-ites who've been trained in a zombie bootcamp to "lurk, groan, and chase convincingly", with your ultimate goal being to reach Resistance HQ, where you'll be "scanned for infection" before entry, a precaution our nation's pubs would be wise to adopt.
The whole ordeal should take the eponymous 2.8 hours to complete, and will finish with a boozy "zombie disco", where those of us with any brains will not be roped into a dance-floor mangling of "Thriller".
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