Full-Blast Science Adventure – So That's How It Is

is a Japanese original anime by Team Isawa of OLM based on the manga series published in DeAgostini Japan's "Weekly So~nanda!" magazine in its science category. It broadcasted on TV Tokyo from October 5, 2003 to March 28, 2004 for 26 episodes.

Plot
While playing an online game, a group of 6 children are sucked into the game's world, an incomplete virtualscape called "Eureka". Split into two groups, the children must clear missions given from the control tower and collect items called "Eureka Stones" if ever they want to return home.