Tens of thousands of Tasmanians have welcomed in the new year at dozens of community events across the state.
10,000 people flocked to Hobart's waterfront, while the Fall's Festival in the state's south-east had a sell out of 16,000.
In Launceston around 6,000 people brought in the new year at a community event at Royal Park.
Police say celebrations in Bridport in the state's north east got out of control.
12 people, including 10 teenagers were arrested after police were pelted with bottles.
Inspector John Ward says the majority of trouble makers had travelled to Bridport from Launceston.
"We were called to a fight between two groups and as we arrived the two parties that were fighting each other sort of split up," he said.
"But from there a number of missiles were discharged in other words people throwing stubbies at police vehicles and damage was caused there."
"The male person who threw the stubbie at the police car was arrested and a number of people were given directions to move on because they were interfering with that arrest and it sort of ramped up," he said.
"Unfortunately there's a select group that are not from Bridport in fact most of those arrested were from Launceston."
On Hobart's waterfront police say they arrested two boys for allegedly attacking and robbing a man in St David's Park.
Inspector Glen Woolley says a number of people were given infringement notices for having open containers of alcohol in the street and a few people were sent home for being intoxicated.
He says there were no reported incidents of the type of drunken violence that has marred previous celebrations.
"It is a much better crowd I think because again the message has actually been for people to be responsible for themselves and take responsibility for their own actions and I think that message is starting to get through to a number of people and the behaviour around the waterfront tonight has been good," he said.
Medical staff at Tasmania's Falls music festival treated a number of people who appeared to be affected by drugs.
Festival organisers sent a warning patrons via text message yesterday alerting them to the circulation of an unidentified drug which made several people ill.
Intensive care paramedic Bruce Connor says most of the people they treated were drunk but there were a few who appeared to be suffering the adverse effects of drugs.
"We have seen some indication that possibly there's some kind of amphetamine floating around but nothing that required hospitalisation and I think being alerted to that that some people cautiously presented just in case," he said.
The clean-up is underway in Launceston after 6,000 strong crowd turned out for a party in Royal Park.
Event organisers say the future of the city's once-troubled New Year's Eve festivity is now assured.
But spokeswoman Lou Clark says long lines at food and drink stalls will have to be addressed next year.
"We had a few issues with lines for the food and wine stalls, but plenty of people brought in a picnic which was fantastic. The venue is a little bit difficult in terms of increasing the number of stalls, but we'll do a debrief you know when we get our heads together after all of this and just have a look at what worked and what didn't work."