This one felt easy to pick up, even with not knowing much on what those different shapes do, it seems that I can still try to keep the gauge between not overfilled nor empty.
Destroy a color being, spawn more colored beings and use the colors to build towers.
Feels easy to understand on the surface, but the amount of instructions make it seem harder to grasp compared to playing the game itself.
I was involved as a programmer for NecroHarvest