Live role play,(LRP) or live action roleplay (LARP)
Is done in person, with living and breathing people to interact with and beat to bits with specially made weapons.
They are based on systems ranging from high fantasy to sci-fi.
The one I roleplay in is a high fantasy game, with a miriad of wierd and wonderful races, magic, incantation, specialist healers, warriors, pirates, orcs, goblins, deamons....the list goes on.
We dress in costume and live that character for the duration of the event, the longest being 6 days.
Total immersion and total suspension of belief.
It is totally different to playing on a messenger, or table top, or play by post.