Further in game you can maintain a population without spawning more people. To do this take the max # people and divide that by the # spawning per day to get the number of days for a life cycle. Then multiply by 180 to get the number of seconds the person needs to live. Divide by 1.5 to find out what their life needs to be at to maintain a population. Once you max out the population it should remain forever.
I saw this comment before, but it wasn't answered. How exactly are you supposed to obtain all units+ accessories? I've finished all the levels/trials/challenges and I'm still missing 7 units and 8 accessories.
Later on in the game, once you have completed a few trials, the accessories give the hero more ability to attack. I can only make this statement based off the last undead hero, because I know he has self-heal.
One question....I was exiting expert mode on zombie defense very often the second I would fail. After a little while every place I went other than the main screen would exit out after a few seconds, preventing me from saving. I don't know if this bug is possible to fix, but I lost a lot of progress due to this. Thanks for the awesome game though!
For the sea level, use your battleship things to take out their anti air. Also keep them surrounded so they don't die. Battleship+boat attack should kill the missle ships. Try to keep to the right side to bottle-neck the missle ships in that narrow jetty. With some strategy and cornering it is an easy win. Now to figure out level 10 hard.....
When I was playing this I was thinking it was a bit too close to the actual Metroid game...especially the design of the map. Other than that, I like the whole snail story you implemented! =)
This game is pretty awesome as it is. However, it was slightly bothersome having that status bars at the bottom blocking the view of my ship when down there.
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