An OT party is a time to have fun with other OTers. In OT parties, OTers talk about anything their hearts desire as they play games of the host's choice. OTers don't like people from other forums (or people who do not forum at all) in their party. It is considered common sense, almost a rule, for a host to not hold an OT party at their own place, unless their place is accepted by the community.
Common places for OT Parties
OT Parties are sometimes hosted at these places:
As an alternative to PBS parties due to their removal, OTers have moved to hosting Team Create parties - essentially ROBLOX Studio with multiplayer. However, to get into these parties, you have to be invited by the owner. Because of this, some parties do not accept many people, and are hard to enter. On the other hand, some people accept everyone who asks, resulting in chaos.
OT Party Buses
Sometimes an OTer will host an "OT Party Bus", which is like a normal party, except for the fact that the OTers involved change games every 5 to 20 minutes. Party buses can last for a long time - up to 3 hours.
Occasionally an OTer will post a thread telling other OTers to help raid a place. This can be anything from a war clan's base to a virtual coffee group's homestore like Frappe. Since summer of 2015, raids that are not clan-related are banned, so raids are not as commonly hosted anymore.
Fail OT parties
Fail OT parties are OT parties where very few people to nobody joins. This is usually because of the place the party is hosted in or the thread not getting enough views.
Some OT party hosts are discriminated due to post count. In early 2012, most OTers have said that up you cannot host an OT party if you have less than 2,000 posts. 4 years later, this is still considered an unspoken rule.