i think there should be some kind of system like:Save 1 supply point for every 10k resources you call in but only work on 10k of one kind of resource. that way you can get your supply to go further in the later stages when it is narly useless unless you have ALOT of extrea points
DO NOT USE REPULSORS ON LEVEL 5. if you do then it will force the creeper to come out of the lines (at least if you use the freindly creeper) i would suggest seeting the repulsor to medium at the begining so you have room to attack the creeper
 "Atomic Strike")
 "Ultimate Santa Battle"){kind=logo}
 "Platform Racing 2")
 "Canoniac Launcher Xmas")
 "Time World")
 "Creeper World 2: Academy")
 "Rocket Santa")
 "Naviage")
 "Age Of Wind 2")
 "SandTest")
 "Pixel 2")
Hey IAN, marines will be present in a next release.