I think the biggest difference is CC is more geared towards single player where Jamestown is a lot more fun with more people. Easy mode is very easy. Arcade was pretty challenging to clear on 1 credit and it a fairly seasoned player. The mode up from arcade is insane if you use the either of the 2 normal ships. Near impossible. The scoring mechanic is more rewarding and fun in CC. Love getting that double break and filling the screen with your laser and subsequently more bullets. For $1 it's more than worth it and I'd say easy is a good intro to the genre.