It's simple. Click Green egg, to get a Chicken, the Green + to heal them (If they eat a mushroom) and the Red egg, to get many new Chickens. (If two Chickens Touch eachother. 2 sec.) The blue Button spawns more Grass. You need more chickens, every time you buy it
can someone fix that the chickens eat multiple gras units at once? (i`ll give credits if someone helps me with this) fsr sometimes you just can`t buy more chickens... (same thing again as before)