The 2019 Anniversary was a celebration of the 16th birthday of the Wilderness Guardians. The celebration primarily took place on December 7, with a special announcement on 6 December.
On 6 December, the actual birthday date, Mojo announced the launch of the wiki as well as posting a birthday tweet  and forum topic . The birthday events had been planned over the previous month by the staff teams on both RuneScape 3 and Old School RuneScape.
Old School RuneScape
The OSRS celebrations consisted of five events and were attended by roughly 30 people. The day started with a Corporeal Beast trip run by the Eventmaster team. This was followed by Mojo taking over to run a flower bombing event, then the Veterans War and a drop party where over 100m was dropped, mainly using Clan Bank donations. To round out the OSRS events,Ghost Sabre hosted a PK trip. Sadly whilst the events were taking place OSRS was lagging badly and Discord suffered a partial outage. This impacted on attendance.
The RS3 celebrations took place after the OSRS events and consisted of 3 events: the Veterans War, a drop party and a WildyWyrm event. Over 250m worth of items were dropped in the party room.