If you're looking for manga similar to Super Mario no Koutsuu Anzen, you might like these titles.
The forests are in danger! Tina and Tai stumble upon a space pod that has crash-landed onto earth! Befriended by two space aliens, they are unwittingly dragged along on a recovery mission that takes them deep into the forests around the world. However, the kids soon discover that the forests are disappearing! What is going on?! Can they learn the science behind the forests' disappearance and do something before it’s too late?!
Yuu Shirogane is a hot blooded school boy who competitively plays the Nintendo DS game Pokemon Platinum in order to become the Battle King.
Ash and his friends visit the town of Eindoak, where they meet the Victory Pokémon, Victini! But there is someone in the town who wants to trap Victini and use its powers for his own misguided plans. Can Ash awaken the Legendary Pokémon Zekrom to help him save Victini?