Virtual Station is a launch point for prehistoric adventures that span thousands of centuries and beyond! Using powerful technology, children known as "Gene Divers" are able to enter a virtually-reconstructed representation of the past in order to obtain genetic samples of extinct animals. Yui is one such Gene Diver who, while on a routine mission, encountered a hurt baby animal. With fellow Gene Diver Akira's help, the two sneak into the facility after hours and send Yui back to the past to help the animal out; yet due to a strange failure, this sequence of events causes a new race of rodent creatures known as Puglaistig to appear in the virtual world. With the system out of control, Yui, Akira and the robot Kotetsu must try to put a stop to the Puglaistig's nefarious plans: to travel to the birth of mankind, and stop the human race from existing!
While playing a video game one day, Tomoru, Dai and Mio found themselves accidentally transported inside yet another game: Eureka, designed by the studious Dr Galileo! In order to return to the real world, the gang must earn ten Eureka stones by completing various scientific challenges - but they have competition. Fellow rivals Yukio, Suzuka, and Kouta, along with Dr Galileo's rival Dr Galilei, are also trying to find the stones. From collecting fossils to stopping lightning in the sky, thrilling scientific challenges await!
Right up front I'll say that I did NOT like Gene Diver. Regardless, I think that fans of either GD or SN might enjoy the other (especially in the direction of GD->SN). Both are unique, scientific anime that involve a group of children - definitely a rarity.