It's a japanese term that define live-action film or television drama that make use of a considerable amount of special effects.

It has origin in the japanese theater and cover a wide range of subjects treated such as horror, sci-fi and fantasy.

Japan have a large tokusatsu production but some of the shows and movies are also known outside of Japan. Ultraman, Godzilla, Kamen Rider and Sentai are just some of the miriad of shows that comprise the tokusatsu entertainment.

Tokusatsu literally means "special filming" in japanese.