If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Mice Vs Hammers
This is a real fun game, hit the mice as many times as you can, if you miss though and points are deducted, do well to open up new rooms around the house. Be careful not to hit any objects which are mistaken for mice as these deduct points. One last tip - the mice with helmets on can be hit several times for lots of points. Have fun!