I am building a web application game that users essentially play once logged in. I am curious to know whether or not to use a landing page to explain how to play. If you want to make sure people stay on the page, I would think you would want to instantly through them into the game and provide links for help. But if they don't know how to play, they could just leave so a landing page helps. Of course I could also have a pop up that allows a user to learn how to play or go play on first visit. Thoughts or experience with this anyone?
Generally I like it jumping straight in, but "it depends". (If anyone says "test it", generally I'd prefer you to be spending that time making the game better.")