Okay, figured out it's probably because I bought it at a sale for 5 bucks. Can I add more money to what I already paid or do I have to buy it for the full price again to get future updates?
If you have already bought once, you do not need to pay again. Just wait until the game becomes available to you. If you spent $10, then it will be available to you right now. If less, it will be available later. We have early access.
