The phrase "fun factor" refers to how enjoyable or entertaining something is. It's a way to describe how much fun or excitement a particular activity, event, or thing brings. Full definition
These have the same basic rules as racing, with the added fun factor of random pickup weapons that can change the order of a race in a heartbeat. (thexboxhub.com)
The biggest fun factor in the game comes from the ability to play multiplayer, but to be honest everything is more fun with friends. (illgaming.net)
We believe that anyone can become a gamer, and we are dedicated to finding, implementing, and improving core fun factors for all gamers. (monstervine.com)