Trade secrets can be found in player-developed (non open source) add-on software and in economically valuable, non-publicly-observable methods used by players to enhance their gameplay.

FORBES: Online Games And Crowdsourced Creativity: The Next Frontier In Intellectual Property

The company also has improved drug application methods, such as a foaming mousse in its Desilux and Primolux drugs to add a moisturizing benefit to irritated skin.

FORBES