Here’s a silly but fun game you can play for free online.
If you’ve ever played hot and cold, you’ll get the idea. You’ll need to make sure the sound is turned up for this one. You start gameplay by clicking the big START button.
A blank screen will appear. You move the cursor around the screen looking for the cow. A voice will keep shouting “Cow!” and grow louder as you get closer to the cow. When you find the cow, there’s a satisfying “Moo!” and the invisible cow becomes visible.
It’s actually kind of addicting. Check it out at this link: