When the pre-order begins, I will have a demo version containing the first 8 levels that you can freely download and play. Customers who choose to pre-order for $19.99 USD will be given access to the beta version of the game containing the second part of the 5-part story arc, which will provide 8 additional levels to play. As I finish each of the subsequent parts of the story, pre-ordering customers will receive an updated beta containing the new levels, new features, bug fixes, etc. This should happen every 8-10 weeks (roughly every other month) until the game is done. Once the game is completed, all pre-ordering customers will receive a free copy of the planned $5 strategy guide, containing level maps, hints, tricks, concept art, etc.