How-To Geek has discovered three of the world’s most popular web browsers contain Easter Eggs: It seems like every browser has a hidden game these days. Chrome has a dinosaur game, Edge has surfing, and Firefox has . . . unicorn pong? Yep, you read that right — here’s how to play it. First, open Firefox. Click the hamburger menu (the three horizontal lines) at the upper right, and then click “Customize.” On the “Customize Firefox” tab, you’ll see a list of interface elements to configure the toolbar. Click and drag all the toolbar items except “Flexible Space” into the “Overflow Menu” on the right. Click the Unicorn button that appears at the bottom of the window…. There’s screenshots in the article illustrating all of the steps — and the result. Read more of this story at Slashdot.