"Gameplay quirks" refers to unique or unusual aspects of how a video game is played, which may deviate from standard or expected mechanics. These quirks can add variety, challenge, or fun to the game experience. Full definition
The different arenas all have different features and add a few gameplay quirks to try keep things fresh. (impulsegamer.com)
Interestingly enough, I haven't seen many server issues or other gameplay quirks in my time in game. (gamercrash.com)
After all, we haven't seen much more of the game, and if it does tell a terrific story and can offer some unique gameplay quirks, it could be fantastic. (thatvideogameblog.com)