Next up you have Weights. There are flying chickens with colored t-shirts. You have a canon that shoots colored weights. Launch the colored weights at like-colored chicken to weigh them down. Stick three weights to any particular chicken and the farm reared avian falls from the sky. This is an odd attempt at adding some kind of depth to a shooting gallery game. Unfortunately instead of adding depth it just complicates things.

Gems is the next game on the list and this proves to be a very contrived effort to add some kind of puzzle game flare to Chicken Hunter. The chickens are now carrying colored gems. Shoot a chicken and it drops the gem it is carrying.
At the bottom of the screen there are three metal bins. When a gem falls into one of these bins it is routed to the top screen where it drops into a Connect Four style grid. Players try to line up like colored gems or to match pre-determined patterns in order to make the gems disappear and earn points. All the while there is a pesky snail moving back and forth along the bottom trying to prevent your gems from falling into the appropriate bin.
As far as puzzle games go Gems is over-complicated and lacks any real depth. You get more points when you match the timed patterns that the game feeds you but you always get the same patterns in the same order, so this just becomes an exercise of memorization at best.
I found Spot the Difference to be an interesting diversion if not somewhat out of place. You are basically presented with two similar images and you have to tap on the elements that are different on the bottom screen. If you ever read Highlights as a kid you will be familiar with these types of picture games.