Depending on the price this isn't really that bad - if it's like $10. Could also mean you can skip and not pay for 2, which is the worst game I've ever played. If 3 comes out shortly after then no biggie.
However if it's like $20 that is a little too high and honestly screwed up. Even worse if 2 and 3 take a while to come (which I sorta doubt but who knows). Could end up being a terrible value or a decent one.
Either way great game. Low on length though.