1. You should make a top-notch game with all of your effort put into it, and make it free, but you can recieve tips.
2. Make a thread saying you released it
3. If you get a lot of downloads, depending on both 1. How good it is and 2. How many people download it, you can get more money then just asking for $2.00
4. Continue updating! This also includes getting the word out with videos, and keep the game alive and still at that peak you want!
Note that if you think it would be best to make your game cost money off the bat, you should run with that.
You can use psychology as well, if you are good at that like me.