The idea is simple, you have a gun and there are cute little prarie dogs running all over the place. Points are awarded for the distance to your target and accuracy. The little critters will scurry back and forth, squeaking to themselves and others all the while and occasionally divining into their burrows with only their heads protruding.
Graphics are high-res and quite smooth.
Even on my low-end Pentium laptop the framerate was very good. You have the ability to scroll your view in 360 degrees to follow the rodents about and the .22 rifle even has a zoomable scope. All I can think is, if this is a simulation, then somewhere out there there are people actually doing this. The shareware version comes equipped only with the .22 caliber rifle. If you're looking for some quick and pointless fun then give this a shot.