As a Roblox developer, it is currently impossible to remove one of your Sponsored Game.
Why would this be a good idea to add?
Sometimes people might make a Sponsored Game and Create the wrong type, for example you want to make one for PC but you accidentally click Mobile, now you have a useless slot of that Sponsored Game.
Someone might change their game to Mobile only but they have Created a Sponsored Game for PC.
Adding the Removing Feature would be nice because sometimes people can also miss click and spend R$ on the wrong Sponsored Game.
Another Example, you made a game and it was not successful, the game is dead, you wouldn’t want to spend R$ on it anymore so you would want to remove it from the Sponsored Games list.
Roblox already has a Remove feature for User Ads so it’s a bit weird that this feature is not available for Sponsored Games.
Thank you. - RuizuKun_Dev