I have to say that this game is very entertaining and suits me perfectly.
It also has a sequel: TSG: Missions
Both can be played for free without downloading at casualcollective.com
I'm addicted to TSG: Missions at the moment
You have to be fast and strategic-thinking to win the harder levels, but once you get the hang of it, it's really addicting.
It works perfectly with lilmanjs16's drone album "Fading Starlight" (No moderator-worshipping)