These eggs can be modified with a large number of special items that drop for the event, and allow players to custom build a special courier that will hatch after the event ends.
The council said the concert at Custom House Square was a non-ticketed event and entry would be on a first come, first served basis with gates opening at 12:00 GMT.
Mr Dew also claimed the event had brought much-needed custom to both his and other nearby pubs and clubs on a night which was usually quiet, adding there had been no trouble reported inside or outside the 1, 600-capacity venue.