I found these games, each one is great for killing a two of minute throughout the day. You have to try at least one. Links given in order of increasing gore.

Don't shoot the puppy - Just like the name said.

Don't make Mommy cry - Eight levels of play very funny.

Thing Thing 3 - Stick figures with guns, lots of blood, and zombies. Jesus shows up on some levels. I kid you not!

The Last Stand - Great Game! Hints. Look for weapons! When you fill the peg board there is still one weapon left to find. You'll need it for the last levels. You have to survive 20 nights. Play this game on a slow computer. Trust me.

Bloody Yeti Sports - No redeeming value, but it keeps me from beating my students.