Way too simple, make some upgrades, to increase the health of your people, and upgrade your gun more. Like have for the later levels, have a big explosion gun, that when it hits a bird it explodes and kills nearby birds, way too hard. Not good graphics, 2D shooter, not worth most peoples time. Looks like this game didn't really have much effort. Style not too good. Sound, kinda. Violence yes, killing birds lol. Interactivity, not so good, you shoot the bird he falls, the next bird comes you shoot him, he falls repeat. Humor, the reason it's a 3 is because the birds and the blood. Overall 2. Needs to improve. Just for a note, people better be a little more cautious about what kind of chickens they eat because some may posess some essence of bird flu. Just to warn you.