Mega Adventures!

 was a syndicated block of TV shows produced by. Two different blocks with the name were produced.

Block I
The main block, internally named  Block I, ran from 1996 to 1999 on Saturdays and Sundays, along with a 2-hour block aired after-school on weekdays. (later known as King World Media Sales) sold barter for the block.

Stations that ran Block I included  stations,, , and. In the first season of Block I, programs were split into three separate "sections", the "preschool section" (Popples, and reruns of The Get Along Gang (both the 1984 and 1987 series) and Sylvanian Families), the "comedy section" (The Little Lulu Show, Blazing Dragons, and Funky Town), and the "action section" (The Legends of Treasure Island, and reruns of G.I. Joe: A Real American Hero (only the Sunbow episodes) and M.A.S.K.).

Block I stopped airing on most stations following Christmas 1999, but and  continued to air reruns of the  Block I shows until August 2000 and February 2001 respectively.