The game is massively expensive! At level 4 you spend 15 energy per mission, or a total of 6-7 missions with a full energy pool. Refilling the energy pool costs 10 war bonds, 60 war bonds for 100 kreds means 1.7 kreds per war bond, which is 17 kreds per energy refill, which is $1.70 cash. You can complete 7 missions in like less than 10 minutes, which amounts to almost $2 per 10 minutes of gameplay. For comparison, a triple-A game that costs $60 and has 10 hours of gameplay (not counting replay value) costs $1 per 10 minutes.
needs a lot of luck. got a purple power + yellow power 3 seconds in the game and basically went with a 50x combo multiplier from the start. 6800000 points at 60% shapes
 "Linx")
 "Tyrant")
 "Music Catch 2")
 "Take Something Literally")