T2A

T2A is an abbreviation that came commonly mean two different things.

Most properly, it is an acronym for Ultima Online: The Second Age, which was the first expansion for Ultima Online, released in September 1998.

More informally, it is also a commonly used term meant to refer to the Lost Lands, which was the new world area that appeared as part of the above-mentioned Ultima Online: The Second Age expansion.