Note that Lazarus works on Mac, so if you want to do RAD development, feel free to do so, you can recompile your Lazarus apps for Mac with the push of a button. However, I'm just trying to prevent false expectations; Lazarus for Mac is still being worked on.

However, while doing game development, you aren't using Delphi's RAD facilities either. I'd say game development is both feasible and compfortable under Mac.