You can give your players incentive to do things, but if it’s not the incentive they’re looking for they will probably demonstrate it by their in game actions. Some examples of player incentives include:
The story of me. If you're looking for a picture of what it was like growing up in the seventies, then this is for you.
Shamus Plays WOW
Ever wondered what's in all those quest boxes you've never bothered to read? Get ready: They're more insane than you might expect.
Here is a 13 part series where I talk about programming games, programming languages, and programming problems.
Overused Words in Game Titles
I scoured the Steam database to figure out what words were the most commonly used in game titles.
I'm a very casual fan of the series, but I gave Civilization VI a look to see what was up with this nuclear war simulator.