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:
Game at the Bottom
Why spend millions on visuals that are just a distraction from the REAL game of hotbar-watching?
The Brilliance of Mass Effect
What is "Domino Worldbuilding" and how did it help to make Mass Effect one of the most interesting settings in modern RPGs?
Good Robot Dev Blog
An ongoing series where I work on making a 2D action game from scratch.
What is this silly word, why did some people get so irritated by it, and why did it fall out of use?
DM of the Rings
Both a celebration and an evisceration of tabletop roleplaying games, by twisting the Lord of the Rings films into a D&D game.