The digital rewards for the CHAMPION level and higher (the computer game is included with the ROYAL level and higher) will be available shortly after the campaign ends. You will not need to wait for the physical rewards to ship.
We originally only supported 2-4 players, but at the start of the campaign, several backers asked us for solitaire rules. After some thought, we were able to add solitaire rules to the game and it now plays 1-4.
Don't see the answer to your question? Ask the project creator directly.