Hello? Oh, hi there! You must be new around these parts. You must be soooo confused. I ought to help you then! Listen up, 'kay?
The games marked as 'Other' are emulated by Saurwow! Games marked as 'Mastered' are mastered in Retroachievements (200% completion aka hardcore) by Saurwow! Here's the link:
[Link]
Owned games are physically owned games! None at the time of writing ._."
And that about concludes everything! I hope to see you around, 'kay? If you have any questions, feel free to message Saurwow as he will most certainly answer! If he does not, feel free to remind him because he is... erm, quite forgetful... See ya!