There’s a game I have that’s not on the database, is there a way I could add it? The game is 2K ROGUES AND OUTLAWS COLLECTION (Spec OPS The Line - Borderlands 2 - Mafia II)
Game bundles are not generally reflected in the database. Typically the best practice is to add each game to your collection. Although games may come packaged in sets the database typically reflects game releases rather than retail packages. One exception would be if the games in the collection are not available for purchase separately and were only ever sold together.
There could be an argument made to add this as a release under each game so that you can add the full package. I’m tagging @peter, the creator of the site, so that he can take a look at this request and weigh in on what should be done.