Instead of
"UNFORTUNATELY YOU DID NOT GET A KEY IN THE (The Game Giveaway We Entered) COMMUNITY GIVEAWAY, BETTER LUCK NEXT TIME!"
receiving a winning notification only will be great. Since most of us dont want our notification panel filled with that so winning notification is the best option. So maybe an option like the winners only will receive an notification would work. Also if possible then an email notification which can be enabled or disabled from account settings option might be a good thing.