Atomicrops is a farming game and a bullet-hell shooter and a Roguelike. There's a lot going on, it is intense, and while it might look silly and cartoony this is a tough nut to crack.
It works like this. You are the farmer of a small plot of land where you need to grow crops to earn money and feed a town. During the day, you plant seeds, fertilise and water them, and at night you defend them, moving and shooting like a twin-stick shooter. If you make it through to morning, a helicopter picks you up to fly you back to town.
Every third day there's a boss fight, after which you meet the mayor of the town and receive prizes depending on how many crops you grew and therefore people you fed. These prizes make you incrementally more powerful. Then it's back to your farm for a new season to see if you can do it all over again.