Anyone arriving on the Isle of Man after 11.59 tonight must self-isolate for at least 14 days, regardless of whether they are displaying symptoms.
The Free Roam mode gives players an open area to train, test their bike set-ups and push their skills to the limit.
Rich Energy OMG's James Hillier said he was expecting coronavirus to have a major effect on the Isle of Man TT but says his thoughts are with the small businesses it is going to hurt.
In the entirety of the running of the TT, it has only been cancelled one other time (outside of the two world wars); in 2001, over an outbreak of foot and mouth disease.
Understandably so, of course, but the TT takes place in early June.
A statement released on the Isle of Man TT Races Facebook page said that: "It is with deep regret that we must cancel the 2020 event".
The decision was taken by the Council of Ministers on Monday.
More details about how the Isle of Man Government will deal with the growing coronavirus crisis are expected to be announced in Tynwald today. "Representatives from the Isle of Man Government will now discuss the implications with all relevant businesses, stakeholders and individuals affected by this cancellation, which it recognises will be significant". The Classic TT and Manx Grand Prix will remain scheduled for August 22, though obviously, that may change.
The UK is now seeing the early stages of what appears to be a serious infection, and therefore the Isle of Man's government shut down the races, even though there's no known cases of COVID-19 on the island.
The government says it will announce measures on Tuesday to provide support for businesses who will be affected most by the TT's cancellation.
"The decision also aims to provide reassurance for our residents and healthcare professionals that the health and well-being of Isle of Man's residents is the single biggest priority and focus of this government".