Earthbound

[Monty]

A game about, a kid from [Onett] (Ness) who is told by an being from ten years in the future that he must [save the world]. And Ness eventually meets other kids and they save the world from an [alien invasion].

[Sonia]

Restricted to the earth.

[Michiko]

unable to leave the surface of the earth:

[Britney]

Attached or restricted to the earth.