Just straight-up fund this project and I will give you all previous tiers AND make you your own personal edition of Retrocausality, with a custom cover of your design, a page dedicated to you at the front, and any changes to rules, names, or referenced historical events you desire.
You'll also get a code to order more copies at-cost. You can decide whether to make this version public, let people use the code with your permission, or just keep it a secret.
A PDF, your choice of softcover or hardcover, and one of the interior art pieces in the book will be designed by you! I reserve the right to reject anything I deem inappropriate, but if you'd like a drawing of yourself riding a scientifically accurate T-Rex knock yourself out.