The Blizzard® Arcade Collection

I just purchased the essentials pack to play The Lost Vikings®

https://us.shop.battle.net/en-us/product/blizzard-arcade-collection#techspecs

but I don’t see the game in battle net launcher

when I try to download at

I get the file “Blizzard-Arcade-Collection-Setup.exe”

and then when I install I get the error

“we coudlnt find RTRO” please reinstall it or point us to its installation folder in settings menu"

how do we play lost Vikings