Rocketmen: Target-Jupiter is an essential expansion that fixes the problem of hoping to launch a successful mission but failing due to random card draws. There are tokens in denominations of a 1 and 2 now that you can gain which you can either add to your Mission Success or save for the end game when they can be converted into victory points. The added Jupiter and Research & Development tracks make each turn meaningful and add dimension to what is a solid base game but one which relies too much on luck. This game comes with all of the base game cards as well as two smaller decks all of which replace the cards for the base game. I cannot emphasize enough the fact that this is that rare animal of expansions, i.e., an essential one. I got rid of the expansion box, the base game cards, and the original game board and packed everything into the base game box. If you like the base game or have been on the fence about it, I highly advise you to jump on this right away.