Can I get in trouble for naming my game similar to one that's not in the same genre? For instance, if a game is named Playarada and I name my game Playarade, can I get in trouble? Be mindful that the games would be in two completely different genres. Thank you!

Names are generally protected by Trademark rather than Copyright.

You can potentially get in trouble if your product can be confused with the competing trademarked product. If you're concerned, you should always take your legal questions to a qualified lawyer, preferably with experience in games or related media.  I would think your example names are different enough that if the games are completely different you probably won't have problems, but I am not a qualified lawyer.