Coins can be collected in the same fashion, and after each level, the coins are automatically spent to upgrade the point value of some of the rockets, making future launches of these rockets more valuable. 5 coins upgrade one rocket, to a maximum of 1000 points, and for every upgrade the rockets take on new appearances, ultimately ending up as "Dragon Rockets". After all rockets have been fully upgraded (to level 10), every additional coin which is collected is converted into points.