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Meant to add some advice for new players. Don't forget if you play a mission, as soon as the black mission screen has loaded, hit the Pause button. You can then dismiss the mission statement and study the map before the emitters become active.
When you build, be very careful that you don't build more than you have energy for. If you go into deficit and the enerdy bar is red, you will build slower and have difficulty getting good times.
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Cool little game. The maps are much nicer than the maps in the original, yet the game play is still simple, fast and elegant! One of my favorite game authors.