| People Depicted in Paintings | 0 | - | 4.54 | 44,588 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,975 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,180 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,704 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,365 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 74,001 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,329 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,800 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,373 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,668 |
| Empires A-Z | 0 | - | 4.52 | 45,106 |
| History by Letter - A | 0 | - | 4.51 | 152,860 |
| History by Letter - B | 0 | - | 4.45 | 172,103 |
| History by Letter - C | 0 | - | 4.70 | 171,383 |
| History by Letter - E | 0 | - | 4.51 | 140,528 |
| History by Letter - G | 0 | - | 4.46 | 122,046 |
| History by Letter - H | 0 | - | 4.45 | 136,504 |
| History by Letter - J | 0 | - | 4.51 | 153,951 |
| History by Letter - N | 0 | - | 4.45 | 104,033 |
| History by Letter - S | 0 | - | 4.47 | 94,325 |
| History by Letter - W | 0 | - | 4.45 | 109,397 |
| History by Letter - M | 0 | - | 4.54 | 119,795 |
| History by Letter - K | 0 | - | 4.50 | 101,315 |
| History by Letter - L | 0 | - | 4.50 | 112,035 |
| History by Letter - I | 0 | - | 4.46 | 104,173 |
| NATO Military Alphabet | 0 | - | 4.98 | 558,614 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 801,420 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,960 |
| Name the War | 0 | - | 4.37 | 201,474 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,521 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,019 |
| Famous Families #1 | 0 | - | 4.20 | 83,571 |
| Names for Warriors | 0 | - | 4.40 | 36,904 |
| Famous Firsts #2 | 0 | - | 4.01 | 81,003 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,576 |
| Empires by Maps | 0 | - | 4.98 | 120,016 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,618 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,332 |
| People in History A-Z #1 | 0 | - | 4.63 | 98,953 |
| People in History A-Z #2 | 0 | - | 4.47 | 55,066 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,154 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,336 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,449 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,669 |
| Countries by Military Spending | 0 | - | 4.93 | 177,397 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,314,098 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,921 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 120,433 |
| Metals of Antiquity | 0 | - | 4.95 | 93,329 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,598 |
| History: What Came First? #1 | 0 | - | 4.87 | 105,094 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,330 |
| WWI... or WWII? | 0 | - | 4.85 | 141,926 |
| Oldest Things | 0 | - | 3.92 | 65,646 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,811 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,632 |
| 20th Century A-Z | 0 | - | 4.50 | 53,666 |
| 19th Century A-Z | 0 | - | 4.77 | 47,240 |
| 18th Century A-Z | 0 | - | 4.54 | 43,127 |
| History by Letter - D | 0 | - | 4.39 | 137,595 |
| History by Letter - F | 0 | - | 4.18 | 114,196 |
| History by Letter - O | 0 | - | 4.32 | 99,473 |
| History by Letter - P | 0 | - | 4.39 | 107,815 |
| History by Letter - Q | 0 | - | 4.34 | 80,311 |
| History by Letter - R | 0 | - | 4.26 | 122,150 |
| History by Letter - T | 0 | - | 4.39 | 105,241 |
| History by Letter - U | 0 | - | 4.19 | 100,761 |
| History by Letter - V | 0 | - | 4.27 | 80,737 |
| History by Letter - Y | 0 | - | 4.27 | 87,254 |
| History by Letter - Z | 0 | - | 4.20 | 77,027 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,223 |
| History Containing the Letter X | 0 | - | 4.47 | 27,027 |
| History Containing the Letter Z | 0 | - | 4.53 | 23,425 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,124 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,201 |
| People Portrayed by Andy Warhol | 0 | - | 4.35 | 37,905 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,884 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,079 |
| Influential Women in History | 0 | - | 4.42 | 35,513 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,197 |
| Cradles of Civilization | 0 | - | 4.46 | 39,567 |
| Materials From History #1 | 0 | - | 4.56 | 51,487 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,545 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,727 |
| Notable People of WWII | 0 | - | 4.53 | 85,850 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,873 |
| World War I Quiz | 0 | - | 4.78 | 101,151 |
| WWI A-Z | 0 | - | 4.50 | 38,278 |
| Biggest Nations and Empires Ever | 0 | - | 4.52 | 145,754 |
| Famous Explorers | 0 | - | 4.58 | 36,125 |
| Famous Empires by Description | 0 | - | 4.73 | 118,338 |
| Answers by Time Period | 0 | - | 4.64 | 55,522 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,928 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,891 |
| 16th Century A-Z | 0 | - | 4.58 | 24,864 |
| 15th Century A-Z | 0 | - | 4.49 | 23,898 |
| 14th Century A-Z | 0 | - | 4.41 | 24,337 |
| 17th Century A-Z | 0 | - | 4.78 | 34,602 |
| Same Start and End Letter - History #1 | 0 | - | 4.18 | 24,731 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,649 |
| History Ending in Z | 0 | - | 4.35 | 13,518 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,953 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,247 |
| Most Important People in History | 0 | - | 3.97 | 50,649 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 90,873 |
| Countries with the Least Dense Road Networks | 0 | - | 4.81 | 41,510 |
| Formula One World Champions | 0 | - | 4.96 | 389,265 |
| Monarchies of the World | 0 | - | 4.94 | 168,286 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,370 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,610 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 114,121 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 75,010 |
| Disney Animated Characters | 0 | - | 4.88 | 601,006 |
| Numbers Tile Select Quiz | 0 | - | 4.98 | 74,553 |
| People on Money by Country | 0 | - | 4.83 | 60,296 |
| Fast Math - Addition | 0 | - | 4.87 | 522,230 |
| Astronomy Quiz | 0 | - | 4.90 | 82,414 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,944 |
| Solar System Trivia | 0 | - | 4.93 | 46,514 |
| Google What's the Difference? - Animals | 0 | - | 4.93 | 92,732 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.91 | 65,571 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,258 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 130,044 |
| Geography by Letter - T | 0 | - | 4.84 | 153,762 |
| Countries with the Most JetPunk Users | 0 | - | 4.99 | 167,564 |
| Most Common JetPunk Answers - Countries | 0 | - | 4.91 | 87,403 |
| Countries By Wikipedia Word Clouds | 0 | - | 4.83 | 39,596 |
| Countries with the Most Major Earthquakes | 0 | - | 4.94 | 117,174 |
| Country Superlatives - Top 2 | 0 | - | 4.99 | 70,402 |
| Former Flags | 0 | - | 4.97 | 107,500 |
| Years in History by Picture | 0 | - | 4.44 | 35,445 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,530 |
| Materials From History #2 | 0 | - | 4.59 | 31,456 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,888 |
| WWII Trivia #1 | 0 | - | 4.36 | 177,469 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,864 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,602 |
| Cold War Decoder | 0 | - | 4.83 | 52,262 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,386 |
| Events in History #2 | 0 | - | 4.49 | 71,650 |
| Events in History #4 | 0 | - | 4.44 | 44,265 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,053 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,965 |
| Assassinations in History | 0 | - | 4.21 | 66,158 |
| Famous Seconds | 0 | - | 4.22 | 46,550 |
| Ages and Eras | 0 | - | 4.39 | 67,653 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,473 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,765 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,145 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,959 |
| Female Historical Figures | 0 | - | 4.28 | 33,224 |
| Historical Blunders | 0 | - | 4.34 | 91,901 |
| People Who Died in Battle | 0 | - | 4.35 | 22,309 |
| Territorial Accessions | 0 | - | 4.36 | 34,762 |
| People Known as "The Great" | 0 | - | 4.46 | 24,643 |
| This Day in History - July | 0 | - | 4.49 | 36,435 |
| This Day in History - August | 0 | - | 4.42 | 43,340 |
| This Day in History - September | 0 | - | 4.55 | 57,406 |
| This Day in History - October | 0 | - | 4.49 | 37,607 |
| This Day in History - January | 0 | - | 4.50 | 46,684 |
| This Day in History - March | 0 | - | 4.45 | 43,641 |
| Ancient Civilizations | 0 | - | 4.64 | 37,921 |
| History Generator Puzzle #1 | 0 | - | 4.00 | 39,705 |
| History Generator Puzzle #3 | 0 | - | 4.03 | 20,360 |
| History Generator Puzzle #6 | 0 | - | 4.05 | 17,502 |
| History Generator Puzzle #5 | 0 | - | 4.18 | 20,009 |
| History Generator Puzzle #8 | 0 | - | 4.14 | 18,809 |
| History Generator Puzzle #7 | 0 | - | 4.16 | 20,383 |
| The Places They Went #1 | 0 | - | 4.74 | 33,517 |
| Famous Inventors | 0 | - | 4.44 | 43,525 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,823 |
| European History for Dummies | 0 | - | 4.83 | 89,769 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.40 | 30,718 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,015 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,013,238 |
| U.S. Army Ranks | 0 | - | 4.48 | 103,436 |
| Top 30 Most Powerful Militaries | 0 | - | 4.52 | 175,808 |
| Countries with Aircraft Carriers | 0 | - | 4.75 | 123,325 |
| Names of Army Units | 0 | - | 4.63 | 36,850 |
| Countries with the Most Skyscrapers | 0 | - | 4.92 | 143,954 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,514 |
| Countries with the Tallest Buildings | 0 | - | 4.93 | 104,246 |
| Formula One Countries Visited | 0 | - | 4.96 | 143,312 |
| Formula 1: Top 3 in Driver's Championship | 0 | - | 4.96 | 100,649 |
| All F1 Grand Prix Winners | 0 | - | 4.85 | 89,947 |
| Coldest Countries | 0 | - | 4.97 | 138,310 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,503 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 82,616 |
| IMDB Top 100 Movies | 0 | - | 4.45 | 204,701 |
| Authors with Books Turned into Movies | 0 | - | 4.45 | 62,865 |
| Corporate Partnerships | 0 | - | 4.56 | 36,883 |
| Prime Numbers 1-100 | 0 | - | 4.53 | 126,706 |
| Perfect Squares | 0 | - | 4.53 | 102,276 |
| Digits of Pi | 0 | - | 4.24 | 1,161,761 |
| Mathematics General Knowledge | 0 | - | 4.47 | 66,844 |
| Major World Religions | 0 | - | 4.78 | 93,379 |
| Religion General Knowledge #1 | 0 | - | 4.41 | 92,259 |
| Religion General Knowledge #2 | 0 | - | 4.47 | 73,902 |
| Religion General Knowledge #3 | 0 | - | 4.46 | 69,323 |
| Religion General Knowledge #5 | 0 | - | 4.51 | 46,183 |
