Ok so. I think I have an original idea. But I’m wondering. How can I check to see if a game was done before. I don’t want to get halfway through a project and figure out that someone made a game before me! Any thoughts guys? Thank you 
Best,
Haba_nero
Just google things that it could be called, google descriptions, etc see if it shows up.
Looking for titles describing your game on roblox would work, and also just google things such as, Game that you fly airplanes on roblox.
If youre doing it because you like it who cares? with the amount of people who play and have multiple games theres more then likely a game for anything you could possibly think of either already out there or being worked on at this very moment, all you need to do is bring your personality and flare to whatever youre making
Thank you for the advice 
!