Key hacks - press key 1 to get 20 upgrade points (gain lots of experience) and f6 to open the upgrades menu (press them a few times) + 15000 limit instead of 50.
TagsDefence
newgrounds - You're under attack! how long can you survive ..
kongregate - Human colonies are under attack! defend your ..
armorgames - Human colonies are under attack! defend your ..
y8 - Human colonies are under attack! defend your ..
coolbuddy - Defend your species against the aliens in this ..
arcadeprehacks - Human colonies are under attack! defend your ..
gamesbutler - Fast paced strategy game. try to defeat the ..
funny-games - Your mission in this fast-paced strategy game ..
keygames - In outerspatial you have to defend yourself, ..
kanogames - Defend mankind in this adrenaline-fueled strategy game! ..
qgames - Human colonies are under attack! defend your species ..
freewebarcade -
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