TV tropes

With most games, the major factor that can sell a game would be the story. However, most stories share a same themes with other stories (characters, plots, locations, etc.). One great database that I have found a while ago is TVtropes. Hopefully, this may help people with their story ideas/gameplay aspects.

Here are a few good ones that may interest people:

Xanatos Gambit

Thirty Xanatos Pileup

Beware the nice ones

Cloud Cuckoo Lander

Mac Guffin Delivery Service

Have fun and good luck with all your games.