Timing is important when it comes to maximizing pre-order effectiveness. Getting started early and building sufficient momentum are the keys to success. Most indie developers report 15-28% of their total pre-launch sales are made just on the first-day pre-orders are made available. This can be the only thing that separates a successful project from a failed one, which is why you should make time to establish a pre-order pipeline so you can take advantage of this, as well.