@ryo @TerminalAutism Unless it's something that your boss doesn't care about. I highly doubt they would care if you make games in your free-time for one. As @PhenomX6 pointed out, it seems to be only a problem if it involves conflict of interests like emulators.
A lot of programming jobs require that you have a few hobby programs on a GitHub account as a portfolio, so you do need at least SOME projects under your real name.