| Countries with the Most Skyscrapers | 0 | - | 4.92 | 143,511 |
| 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 | 67,885 |
| Tall Building Cities - United States | 0 | - | 4.48 | 68,278 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,773 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,609 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,967 |
| Cities with the Tallest Buildings | 0 | - | 4.17 | 84,360 |
| "Second Best" History Edition | 0 | - | 4.93 | 62,009 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,143 |
| Territory Changes in World War I | 0 | - | 4.86 | 46,265 |
| Empires A-Z | 0 | - | 4.51 | 44,860 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,401 |
| History by Letter - A | 0 | - | 4.51 | 152,205 |
| History by Letter - B | 0 | - | 4.45 | 171,366 |
| History by Letter - C | 0 | - | 4.70 | 170,437 |
| History by Letter - E | 0 | - | 4.51 | 139,934 |
| History by Letter - G | 0 | - | 4.45 | 121,527 |
| History by Letter - H | 0 | - | 4.45 | 135,958 |
| History by Letter - J | 0 | - | 4.51 | 153,327 |
| 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 | 108,817 |
| History by Letter - M | 0 | - | 4.54 | 119,162 |
| History by Letter - K | 0 | - | 4.50 | 100,880 |
| History by Letter - L | 0 | - | 4.49 | 111,568 |
| History by Letter - I | 0 | - | 4.46 | 103,747 |
| NATO Military Alphabet | 0 | - | 4.98 | 554,881 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 798,354 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,830 |
| Name the War | 0 | - | 4.37 | 200,865 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,418 |
| Famous Firsts #1 | 0 | - | 4.40 | 68,839 |
| Famous Families #1 | 0 | - | 4.20 | 83,423 |
| Names for Warriors | 0 | - | 4.40 | 36,802 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,738 |
| Empires by Maps | 0 | - | 4.98 | 118,719 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,543 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,760 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,558 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,300 |
| 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 | 54,857 |
| People in History A-Z #3 | 0 | - | 4.44 | 45,984 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,230 |
| 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 | 176,535 |
| Countries with the Most Skyscrapers per Capita | 0 | - | 4.69 | 72,199 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,306,238 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,573 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 119,812 |
| Metals of Antiquity | 0 | - | 4.94 | 92,979 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,237 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,282 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,200 |
| WWI... or WWII? | 0 | - | 4.85 | 140,812 |
| 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 | 136,957 |
| History by Letter - F | 0 | - | 4.18 | 113,750 |
| History by Letter - O | 0 | - | 4.31 | 99,106 |
| History by Letter - P | 0 | - | 4.38 | 107,402 |
| History by Letter - Q | 0 | - | 4.34 | 80,008 |
| History by Letter - R | 0 | - | 4.26 | 121,723 |
| History by Letter - T | 0 | - | 4.39 | 104,923 |
| History by Letter - U | 0 | - | 4.19 | 100,377 |
| History by Letter - V | 0 | - | 4.27 | 80,413 |
| History by Letter - Y | 0 | - | 4.27 | 86,973 |
| History by Letter - Z | 0 | - | 4.18 | 76,772 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,126 |
| 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 | 15,020 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,705 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,941 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 66,882 |
| Influential Women in History | 0 | - | 4.42 | 35,160 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,050 |
| Cradles of Civilization | 0 | - | 4.46 | 39,220 |
| Materials From History #1 | 0 | - | 4.56 | 51,069 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,223 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,713 |
| Notable People of WWII | 0 | - | 4.53 | 85,350 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,474 |
| World War I Quiz | 0 | - | 4.78 | 100,333 |
| WWI A-Z | 0 | - | 4.50 | 38,049 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,314 |
| Famous Explorers | 0 | - | 4.58 | 35,994 |
| Famous Empires by Description | 0 | - | 4.73 | 117,996 |
| Answers by Time Period | 0 | - | 4.63 | 55,312 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,820 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,498 |
| 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 | 23,786 |
| 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 | 25,553 |
| History Ending in Z | 0 | - | 4.35 | 13,463 |
| Most Important People in History | 0 | - | 3.98 | 50,438 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 85,154 |
| Countries with the Least Dense Road Networks | 0 | - | 4.81 | 41,349 |
| Formula One World Champions | 0 | - | 4.96 | 385,797 |
| Monarchies of the World | 0 | - | 4.94 | 166,826 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 111,755 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,047 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 113,556 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 74,710 |
| Disney Animated Characters | 0 | - | 4.88 | 599,495 |
| Numbers Tile Select Quiz | 0 | - | 4.98 | 74,084 |
| People on Money by Country | 0 | - | 4.84 | 60,029 |
| Fast Math - Addition | 0 | - | 4.87 | 520,167 |
| Astronomy Quiz | 0 | - | 4.90 | 81,840 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 135,910 |
| 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 | 101,819 |
| Countries that Start with a Vowel | 0 | - | 4.98 | 128,868 |
| Geography by Letter - T | 0 | - | 4.84 | 152,591 |
| Countries with the Most JetPunk Users | 0 | - | 4.99 | 165,770 |
| Most Common JetPunk Answers - Countries | 0 | - | 4.91 | 86,786 |
| Countries By Wikipedia Word Clouds | 0 | - | 4.84 | 39,141 |
| Countries with the Most Major Earthquakes | 0 | - | 4.94 | 116,842 |
| Country Superlatives - Top 2 | 0 | - | 4.99 | 70,285 |
| Former Flags | 0 | - | 4.97 | 106,833 |
| Years in History by Picture | 0 | - | 4.44 | 35,154 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,231 |
| Materials From History #2 | 0 | - | 4.59 | 31,239 |
| WWII Trivia #1 | 0 | - | 4.36 | 176,730 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,452 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,365 |
| Cold War Decoder | 0 | - | 4.83 | 51,982 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,330 |
| Events in History #2 | 0 | - | 4.49 | 71,461 |
| Events in History #4 | 0 | - | 4.44 | 44,132 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,497 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,843 |
| Assassinations in History | 0 | - | 4.21 | 66,001 |
| Famous Seconds | 0 | - | 4.22 | 46,409 |
| Ages and Eras | 0 | - | 4.38 | 67,500 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,416 |
| 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 | 91,736 |
| 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 | 36,377 |
| This Day in History - August | 0 | - | 4.42 | 43,263 |
| This Day in History - September | 0 | - | 4.55 | 57,284 |
| This Day in History - October | 0 | - | 4.49 | 37,557 |
| This Day in History - January | 0 | - | 4.53 | 46,588 |
| This Day in History - March | 0 | - | 4.45 | 43,551 |
| Ancient Civilizations | 0 | - | 4.63 | 37,784 |
| History Generator Puzzle #1 | 0 | - | 3.99 | 38,898 |
| 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 | 19,484 |
| History Generator Puzzle #8 | 0 | - | 4.14 | 18,447 |
| History Generator Puzzle #7 | 0 | - | 4.16 | 19,812 |
| 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 | 24,526 |
| European History for Dummies | 0 | - | 4.83 | 89,386 |
| 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 | 1,011,279 |
| U.S. Army Ranks | 0 | - | 4.48 | 102,690 |
| Top 30 Most Powerful Militaries | 0 | - | 4.52 | 175,262 |
| Countries with Aircraft Carriers | 0 | - | 4.75 | 123,119 |
| Names of Army Units | 0 | - | 4.63 | 36,644 |
| Formula One Countries Visited | 0 | - | 4.96 | 142,267 |
| Formula 1: Top 3 in Driver's Championship | 0 | - | 4.96 | 99,452 |
| All F1 Grand Prix Winners | 0 | - | 4.88 | 89,195 |
| Coldest Countries | 0 | - | 4.97 | 137,325 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,277 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 82,390 |
| IMDB Top 100 Movies | 0 | - | 4.45 | 203,535 |
| 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 | 126,058 |
| Perfect Squares | 0 | - | 4.53 | 101,842 |
| Digits of Pi | 0 | - | 4.24 | 1,159,056 |
| Mathematics General Knowledge | 0 | - | 4.47 | 66,437 |
| Major World Religions | 0 | - | 4.78 | 92,564 |
| Religion General Knowledge #2 | 0 | - | 4.47 | 73,683 |
| Religion General Knowledge #3 | 0 | - | 4.46 | 69,102 |
| Religion General Knowledge #5 | 0 | - | 4.51 | 45,994 |
| Country Logic Puzzle 4x4 – Sudoku style | 0 | - | 4.99 | 27,831 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 81,365 |
