1.If you google "Sonic The Hedgehog," you'll see Sonic standing to the side. If you click on him, he jumps — and if you click on him 25 times, he turns into Super Sonic.
2.If you search the phrase "Google in 1998," the results will appear in Google's 1998 layout.
3.If you search "spinner," Google will give you an interactive fidget spinner to play with.
4.If you search "do a barrel roll," Google will do a Star Fox 64 style barrel roll. This also happens if you search the phrase, "Z or R twice."
5.If you google "wubba lubba dub dub," a catchphrase used by Rick on Rick and Morty, Google will ask if you meant "I am in great pain, please help me." This is a reference to an episode during which Bird Person says what the phrase means in his native language.
6.If you google "festivus," the festivus pole from Seinfeld appears alongside the search results.
7.If you search "the answer to life, the universe, and everything," Google's calculator will tell you it's "42." This is a reference to The Hitchhiker's Guide to the Galaxy, in which a supercomputer calculates that the answer to the ultimate question of life, the universe, and everything is 42.
8.Search the word "anagram," and Google jokingly asks if you meant "nag a ram."
9."Zerg rush" is a term that describes an overwhelming attack in a video game. If you google "zerg rush," a horde of Google Os will attack. You can click on the Os to defeat them, or they'll annihilate the search results.
10.Search the word "askew," and Google appears tilted.
11.If you google the word "recursion," you'll be asked if you meant "recursion,"— a play on the word's definition.
12.If you do a Google Image search for "atari breakout," the photo results turn into a game of Breakout. If you break all of the bricks, a random phrase will be searched and a new game will begin.
13.If you search the words "Is Google down," you'll be given a response of "No."
14.If you search "What's the loneliest number" Google will say "1," a reference to the song “One” written by Harry Nilsson and made famous by Three Dog Night.
15.Search "tic tac toe" and Google will present you with a game in which you can be "X" or "O," and adjust the difficulty between easy, medium, and impossible.
16.If you search "fun facts" or "I'm feeling curious," Google will provide you with a fun fact. You can then click "Ask another question" for more random facts.
17.If you google "Super Mario Bros." you'll see a flashing question mark box. If you click on it, a coin will pop out — after 100 coins, you'll hear the "1UP" sound.