That's odd; I entered both into Google just now and neither one came up with a "did you mean [x]" statement. In addition, clicking the "Definition" button brings up the following: "a?dapt?er also a?dap?tor." Apparently although they both look wrong, they are both right. And Sonic 1 GBA? I want to see how much it differs from Sonic 1 Genesis before deciding whether to buy it or not.