: Mil it ary ▁units ▁and ▁form ations ▁established ▁in ▁the ▁ 1 st ▁century ▁BC ▁Category : Mil it ary ▁units ▁and ▁form ations ▁of ▁the ▁Roman ▁Empire ▁Category : Pro te ct ive ▁security ▁units ▁Category : 4 th - century ▁dis est ab lish ments ▁in ▁the ▁Roman ▁Empire <0x0A> </s> ▁M ud l ark ▁is ▁a ▁She ff ield - based ▁production ▁company ▁that ▁develop ▁ ▁Ch rom ar oma ▁ ▁using ▁players ’ ▁O yst er ▁cards ▁and ▁Bar cl ays ▁Cy cle ▁H ire ▁accounts . ▁Point s ▁are ▁awarded ▁depending ▁on ▁the ▁stations ▁and ▁jour ne ys ▁users ▁complete ▁on ▁the ▁London ▁Under ground ▁and ▁London ▁B uses , ▁as ▁well ▁as ▁using ▁‘ B oris ▁b ikes ’ . ▁It ▁is ▁described ▁by ▁its ▁cre ators , ▁M ud l ark , ▁as ▁“ location - based ▁top ▁tr umps ”, ▁and ▁encourag es ▁competition ▁through ▁leader boards . ▁ ▁The ▁game ▁was ▁launched ▁to ▁the ▁public ▁on ▁ 3 0 ▁November ▁ 2 0 1 0 , ▁when ▁snow ▁closed ▁G at wick ▁Airport ▁and ▁caused ▁severe ▁del ays ▁on ▁London ’ s ▁t ube ▁network . ▁ ▁References ▁ ▁External ▁links ▁▁ ▁Ch rom ar oma ▁ ▁M ud l ark ▁ ▁Category : Internet ▁properties ▁established ▁in ▁ 2 0 0 9 <0x0A> </s> ▁Jesus ▁Lane ▁is ▁a ▁street ▁in ▁central ▁Cambridge , ▁England . ▁The ▁street ▁links ▁with ▁the ▁j unction ▁of ▁Bridge ▁Street ▁and ▁Sid ney ▁Street ▁to ▁the ▁west