Have you even played Aerial Swagaxe ? <| sep |> Are you in the US ? Did you pay with a credit card ? Call your credit card company , they will most likely let you file a charge back for the cost of the base and let you buy a new one and credit your account . <| sep |> Grody to the max <| sep |> As long as the game from amazon have a steam key , you will be able to add it to your steam account . All the games you buy on Steam can be play on steam on WindowsMac or Linux as long as the game are ported to the platform . I believe there is very few exceptionMore specifically for KSPSpaceProgramMacCodedpB 01 LNQ 4 AJGrefsr 11 Amazon give you a Steam key for WindowsOSX but does not list Linux but it should still work regardless . PS I just noticed that the steamPlay icon is now gone from steam . ?