So not crazy, people have been having for centuries (i.e. the game part predates "computer game" part).
I don't want to say there can't be a real breakthrough that makes this a much bigger educational impact, but it's probably important to remember that as an area lot of smart people have tried this pretty hard (including your characterization of open-world + encarta) , and results are not that impressive, so far.
So not crazy, people have been having for centuries (i.e. the game part predates "computer game" part).
I don't want to say there can't be a real breakthrough that makes this a much bigger educational impact, but it's probably important to remember that as an area lot of smart people have tried this pretty hard (including your characterization of open-world + encarta) , and results are not that impressive, so far.