MultiHのコメント

I have only played the 1st few levels, but why is Tokyo in Korea and Paris is in Spain?

Is there a purpose to death magic? Does killing invaders reduce the enemy damage?

Bug: if you unlock towers then press Menu and retry, you get all your research points back but also the tower you've unlocked. So you can have all towers unlocked once you have 500 research points.

Level 3-6 is the easiest level by far! For those stuck on the 3 series, just build loads of lasers. The hardest is 3-3, you need to build all your lasers on one side so your alien can attack to the sides