| Countries with the Most Skyscrapers | 0 | - | 4.92 | 143,512 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,345 |
| Countries with the Tallest Buildings | 0 | - | 4.93 | 103,846 |
| Make a Stained Glass Window | 0 | - | 5.00 | 67,888 |
| Tall Building Cities - United States | 0 | - | 4.48 | 68,279 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,773 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,611 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,968 |
| Cities with the Tallest Buildings | 0 | - | 4.17 | 84,360 |
| "Second Best" History Edition | 0 | - | 4.93 | 62,015 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,144 |
| Territory Changes in World War I | 0 | - | 4.86 | 46,270 |
| Empires A-Z | 0 | - | 4.51 | 44,861 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,403 |
| History by Letter - A | 0 | - | 4.51 | 152,209 |
| History by Letter - B | 0 | - | 4.45 | 171,371 |
| History by Letter - C | 0 | - | 4.70 | 170,441 |
| History by Letter - E | 0 | - | 4.51 | 139,937 |
| History by Letter - G | 0 | - | 4.45 | 121,527 |
| History by Letter - H | 0 | - | 4.45 | 135,961 |
| History by Letter - J | 0 | - | 4.51 | 153,328 |
| History by Letter - N | 0 | - | 4.44 | 103,452 |
| History by Letter - S | 0 | - | 4.47 | 93,735 |
| History by Letter - W | 0 | - | 4.45 | 108,818 |
| History by Letter - M | 0 | - | 4.54 | 119,163 |
| History by Letter - K | 0 | - | 4.50 | 100,880 |
| History by Letter - L | 0 | - | 4.49 | 111,569 |
| History by Letter - I | 0 | - | 4.46 | 103,751 |
| NATO Military Alphabet | 0 | - | 4.98 | 554,885 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 798,365 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,831 |
| Name the War | 0 | - | 4.37 | 200,872 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,418 |
| Famous Firsts #1 | 0 | - | 4.40 | 68,840 |
| Famous Families #1 | 0 | - | 4.20 | 83,424 |
| Names for Warriors | 0 | - | 4.40 | 36,803 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,742 |
| Empires by Maps | 0 | - | 4.98 | 118,733 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,546 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,763 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,560 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,305 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,132 |
| People in History A-Z #1 | 0 | - | 4.63 | 98,661 |
| People in History A-Z #2 | 0 | - | 4.47 | 54,859 |
| People in History A-Z #3 | 0 | - | 4.44 | 45,984 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,232 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,355 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,605 |
| Countries by Military Spending | 0 | - | 4.93 | 176,538 |
| Countries with the Most Skyscrapers per Capita | 0 | - | 4.69 | 72,201 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,306,295 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,574 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 119,814 |
| Metals of Antiquity | 0 | - | 4.94 | 92,980 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,237 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,285 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,200 |
| WWI... or WWII? | 0 | - | 4.85 | 140,814 |
| Oldest Things | 0 | - | 3.92 | 65,599 |
| Famous Firsts #2 | 0 | - | 4.00 | 80,858 |
| Famous Firsts #3 - The United States | 0 | - | 4.17 | 14,498 |
| 20th Century A-Z | 0 | - | 4.50 | 53,202 |
| 19th Century A-Z | 0 | - | 4.77 | 46,762 |
| 18th Century A-Z | 0 | - | 4.54 | 42,667 |
| History by Letter - D | 0 | - | 4.39 | 136,959 |
| History by Letter - F | 0 | - | 4.18 | 113,750 |
| History by Letter - O | 0 | - | 4.31 | 99,108 |
| History by Letter - P | 0 | - | 4.38 | 107,403 |
| History by Letter - Q | 0 | - | 4.34 | 80,010 |
| History by Letter - R | 0 | - | 4.26 | 121,724 |
| History by Letter - T | 0 | - | 4.39 | 104,926 |
| History by Letter - U | 0 | - | 4.19 | 100,391 |
| History by Letter - V | 0 | - | 4.27 | 80,414 |
| History by Letter - Y | 0 | - | 4.27 | 86,974 |
| History by Letter - Z | 0 | - | 4.18 | 76,773 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,127 |
| History Containing the Letter X | 0 | - | 4.47 | 26,945 |
| History Containing the Letter Z | 0 | - | 4.53 | 23,356 |
| Famous Generals - Non U.S. | 0 | - | 4.58 | 15,021 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,706 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,947 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 66,882 |
| Influential Women in History | 0 | - | 4.42 | 35,162 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,050 |
| Cradles of Civilization | 0 | - | 4.46 | 39,222 |
| Materials From History #1 | 0 | - | 4.56 | 51,086 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,225 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,731 |
| Notable People of WWII | 0 | - | 4.53 | 85,351 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,475 |
| World War I Quiz | 0 | - | 4.78 | 100,334 |
| WWI A-Z | 0 | - | 4.50 | 38,050 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,314 |
| Famous Explorers | 0 | - | 4.58 | 35,996 |
| Famous Empires by Description | 0 | - | 4.73 | 117,999 |
| Answers by Time Period | 0 | - | 4.63 | 55,314 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,821 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,501 |
| 16th Century A-Z | 0 | - | 4.58 | 24,405 |
| 15th Century A-Z | 0 | - | 4.49 | 23,410 |
| 14th Century A-Z | 0 | - | 4.41 | 23,787 |
| 17th Century A-Z | 0 | - | 4.78 | 34,185 |
| Same Start and End Letter - History #1 | 0 | - | 4.16 | 24,675 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,554 |
| History Ending in Z | 0 | - | 4.35 | 13,463 |
| Most Important People in History | 0 | - | 3.98 | 50,439 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 85,155 |
| Countries with the Least Dense Road Networks | 0 | - | 4.81 | 41,349 |
| Formula One World Champions | 0 | - | 4.96 | 385,810 |
| Monarchies of the World | 0 | - | 4.94 | 166,827 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 111,780 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,052 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 113,558 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 74,711 |
| Disney Animated Characters | 0 | - | 4.88 | 599,502 |
| Numbers Tile Select Quiz | 0 | - | 4.98 | 74,088 |
| People on Money by Country | 0 | - | 4.84 | 60,033 |
| Fast Math - Addition | 0 | - | 4.87 | 520,177 |
| Astronomy Quiz | 0 | - | 4.90 | 81,845 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 135,914 |
| Solar System Trivia | 0 | - | 4.93 | 46,125 |
| Google What's the Difference? - Animals | 0 | - | 4.93 | 92,462 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.89 | 65,225 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,821 |
| Countries that Start with a Vowel | 0 | - | 4.98 | 128,874 |
| Geography by Letter - T | 0 | - | 4.84 | 152,596 |
| Countries with the Most JetPunk Users | 0 | - | 4.99 | 165,775 |
| Most Common JetPunk Answers - Countries | 0 | - | 4.91 | 86,789 |
| Countries By Wikipedia Word Clouds | 0 | - | 4.84 | 39,141 |
| Countries with the Most Major Earthquakes | 0 | - | 4.94 | 116,846 |
| Country Superlatives - Top 2 | 0 | - | 4.99 | 70,285 |
| Former Flags | 0 | - | 4.97 | 106,839 |
| Years in History by Picture | 0 | - | 4.44 | 35,155 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,231 |
| Materials From History #2 | 0 | - | 4.59 | 31,253 |
| WWII Trivia #1 | 0 | - | 4.36 | 176,731 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,452 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,367 |
| Cold War Decoder | 0 | - | 4.83 | 51,983 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,330 |
| Events in History #2 | 0 | - | 4.49 | 71,462 |
| Events in History #4 | 0 | - | 4.44 | 44,133 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,500 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,845 |
| Assassinations in History | 0 | - | 4.21 | 66,001 |
| Famous Seconds | 0 | - | 4.22 | 46,409 |
| Ages and Eras | 0 | - | 4.38 | 67,501 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,417 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,656 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,065 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,847 |
| Female Historical Figures | 0 | - | 4.27 | 33,124 |
| Historical Blunders | 0 | - | 4.33 | 91,737 |
| People Who Died in Battle | 0 | - | 4.35 | 22,273 |
| Territorial Accessions | 0 | - | 4.38 | 34,666 |
| People Known as "The Great" | 0 | - | 4.46 | 24,552 |
| This Day in History - July | 0 | - | 4.49 | 36,378 |
| This Day in History - August | 0 | - | 4.42 | 43,264 |
| This Day in History - September | 0 | - | 4.55 | 57,286 |
| This Day in History - October | 0 | - | 4.49 | 37,558 |
| This Day in History - January | 0 | - | 4.53 | 46,589 |
| This Day in History - March | 0 | - | 4.45 | 43,552 |
| Ancient Civilizations | 0 | - | 4.63 | 37,784 |
| History Generator Puzzle #1 | 0 | - | 3.99 | 38,899 |
| History Generator Puzzle #3 | 0 | - | 4.03 | 19,532 |
| History Generator Puzzle #6 | 0 | - | 4.05 | 17,082 |
| History Generator Puzzle #5 | 0 | - | 4.18 | 19,485 |
| History Generator Puzzle #8 | 0 | - | 4.14 | 18,448 |
| History Generator Puzzle #7 | 0 | - | 4.16 | 19,813 |
| The Places They Went #1 | 0 | - | 4.74 | 33,454 |
| Famous Inventors | 0 | - | 4.43 | 43,467 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,528 |
| European History for Dummies | 0 | - | 4.83 | 89,388 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.40 | 30,664 |
| People in History A-Z #4 | 0 | - | 4.10 | 22,936 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,011,292 |
| U.S. Army Ranks | 0 | - | 4.48 | 102,691 |
| Top 30 Most Powerful Militaries | 0 | - | 4.52 | 175,264 |
| Countries with Aircraft Carriers | 0 | - | 4.75 | 123,122 |
| Names of Army Units | 0 | - | 4.63 | 36,644 |
| Formula One Countries Visited | 0 | - | 4.96 | 142,268 |
| Formula 1: Top 3 in Driver's Championship | 0 | - | 4.96 | 99,453 |
| All F1 Grand Prix Winners | 0 | - | 4.88 | 89,196 |
| Coldest Countries | 0 | - | 4.97 | 137,326 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,280 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 82,392 |
| IMDB Top 100 Movies | 0 | - | 4.45 | 203,539 |
| Authors with Books Turned into Movies | 0 | - | 4.44 | 62,668 |
| Corporate Partnerships | 0 | - | 4.56 | 36,808 |
| Prime Numbers 1-100 | 0 | - | 4.53 | 126,060 |
| Perfect Squares | 0 | - | 4.53 | 101,843 |
| Digits of Pi | 0 | - | 4.24 | 1,159,069 |
| Mathematics General Knowledge | 0 | - | 4.47 | 66,440 |
| Major World Religions | 0 | - | 4.78 | 92,564 |
| Religion General Knowledge #2 | 0 | - | 4.47 | 73,683 |
| Religion General Knowledge #3 | 0 | - | 4.46 | 69,103 |
| Religion General Knowledge #5 | 0 | - | 4.51 | 45,995 |
| Country Logic Puzzle 4x4 – Sudoku style | 0 | - | 4.99 | 27,831 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 81,366 |
