| People in History A-Z #1 | 0 | - | 4.61 | 98,911 |
| People in History A-Z #2 | 0 | - | 4.47 | 55,037 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,126 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,327 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,444 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,663 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.93 | 59,893 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,950 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,287 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,909 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,709 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,351 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,625 |
| Empires A-Z | 0 | - | 4.51 | 45,080 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,570 |
| History by Letter - A | 0 | - | 4.51 | 152,773 |
| History by Letter - B | 0 | - | 4.45 | 172,002 |
| History by Letter - C | 0 | - | 4.70 | 171,281 |
| History by Letter - E | 0 | - | 4.51 | 140,460 |
| History by Letter - G | 0 | - | 4.46 | 121,968 |
| History by Letter - H | 0 | - | 4.45 | 136,426 |
| History by Letter - J | 0 | - | 4.51 | 153,876 |
| History by Letter - N | 0 | - | 4.45 | 103,986 |
| History by Letter - S | 0 | - | 4.47 | 94,282 |
| History by Letter - W | 0 | - | 4.45 | 109,220 |
| History by Letter - M | 0 | - | 4.54 | 119,740 |
| History by Letter - K | 0 | - | 4.50 | 101,265 |
| History by Letter - L | 0 | - | 4.50 | 111,991 |
| History by Letter - I | 0 | - | 4.46 | 104,114 |
| NATO Military Alphabet | 0 | - | 4.98 | 558,065 |
| Multiple Choice Numbers #1 | 0 | - | 4.49 | 47,091 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 801,047 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,948 |
| Name the War | 0 | - | 4.37 | 201,404 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,506 |
| Famous Firsts #1 | 0 | - | 4.40 | 68,994 |
| Famous Families #1 | 0 | - | 4.20 | 83,550 |
| Names for Warriors | 0 | - | 4.40 | 36,895 |
| Famous Firsts #2 | 0 | - | 4.01 | 80,984 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.40 | 30,711 |
| People in History A-Z #4 | 0 | - | 4.10 | 23,000 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,466 |
| Empires by Maps | 0 | - | 4.98 | 119,855 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,902 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,120 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,676 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,569 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,311 |
| Countries by Military Spending | 0 | - | 4.93 | 177,284 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,313,101 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,851 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 120,348 |
| Metals of Antiquity | 0 | - | 4.94 | 93,268 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,551 |
| History: What Came First? #1 | 0 | - | 4.87 | 105,018 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,318 |
| WWI... or WWII? | 0 | - | 4.85 | 141,797 |
| Oldest Things | 0 | - | 3.92 | 65,638 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,808 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,622 |
| 20th Century A-Z | 0 | - | 4.50 | 53,606 |
| 19th Century A-Z | 0 | - | 4.77 | 47,186 |
| 18th Century A-Z | 0 | - | 4.54 | 43,076 |
| History by Letter - D | 0 | - | 4.39 | 137,435 |
| History by Letter - F | 0 | - | 4.18 | 114,136 |
| History by Letter - O | 0 | - | 4.32 | 99,431 |
| History by Letter - P | 0 | - | 4.39 | 107,767 |
| History by Letter - Q | 0 | - | 4.34 | 80,271 |
| History by Letter - R | 0 | - | 4.26 | 122,098 |
| History by Letter - T | 0 | - | 4.39 | 105,201 |
| History by Letter - U | 0 | - | 4.19 | 100,718 |
| History by Letter - V | 0 | - | 4.27 | 80,701 |
| History by Letter - Y | 0 | - | 4.27 | 87,212 |
| History by Letter - Z | 0 | - | 4.20 | 76,986 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,211 |
| History Containing the Letter X | 0 | - | 4.47 | 27,013 |
| History Containing the Letter Z | 0 | - | 4.53 | 23,418 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,114 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,160 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,734 |
| 1, 2, 3, or 4? | 0 | - | 4.28 | 69,964 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,054 |
| Influential Women in History | 0 | - | 4.42 | 35,472 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,181 |
| Cradles of Civilization | 0 | - | 4.46 | 39,530 |
| Materials From History #1 | 0 | - | 4.56 | 51,451 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,507 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,463 |
| Notable People of WWII | 0 | - | 4.53 | 85,572 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,840 |
| World War I Quiz | 0 | - | 4.78 | 101,110 |
| WWI A-Z | 0 | - | 4.50 | 38,243 |
| Biggest Nations and Empires Ever | 0 | - | 4.52 | 145,695 |
| Famous Explorers | 0 | - | 4.58 | 36,111 |
| Famous Empires by Description | 0 | - | 4.73 | 118,300 |
| Answers by Time Period | 0 | - | 4.64 | 55,498 |
| Has Anyone Ever Done It - U.S. Sports | 0 | - | 4.43 | 16,342 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,851 |
| 16th Century A-Z | 0 | - | 4.58 | 24,825 |
| 15th Century A-Z | 0 | - | 4.49 | 23,864 |
| 14th Century A-Z | 0 | - | 4.41 | 24,288 |
| 17th Century A-Z | 0 | - | 4.78 | 34,565 |
| Same Start and End Letter - History #1 | 0 | - | 4.17 | 24,722 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,636 |
| History Ending in Z | 0 | - | 4.35 | 13,511 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,930 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,200 |
| Most Important People in History | 0 | - | 3.98 | 50,620 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 90,532 |
| Make a Stained Glass Window | 0 | - | 5.00 | 68,315 |
| Countries with the Least Dense Road Networks | 0 | - | 4.81 | 41,490 |
| Formula One World Champions | 0 | - | 4.96 | 388,853 |
| Monarchies of the World | 0 | - | 4.94 | 167,838 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,295 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,522 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 114,034 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 74,966 |
| Disney Animated Characters | 0 | - | 4.88 | 600,855 |
| Numbers Tile Select Quiz | 0 | - | 4.98 | 74,492 |
| Multiple Choice Numbers #2 - U.S. Edition | 0 | - | 4.14 | 16,794 |
| People on Money by Country | 0 | - | 4.83 | 60,245 |
| Fast Math - Addition | 0 | - | 4.87 | 521,980 |
| Astronomy Quiz | 0 | - | 4.90 | 82,330 |
| Astronomy True or False | 0 | - | 4.39 | 36,398 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,799 |
| Solar System Trivia | 0 | - | 4.93 | 46,448 |
| Google What's the Difference? - Animals | 0 | - | 4.93 | 92,704 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.91 | 65,520 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,197 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 129,885 |
| Geography by Letter - T | 0 | - | 4.84 | 153,574 |
| Countries with the Most JetPunk Users | 0 | - | 4.99 | 167,303 |
| Most Common JetPunk Answers - Countries | 0 | - | 4.91 | 87,321 |
| Countries By Wikipedia Word Clouds | 0 | - | 4.83 | 39,541 |
| Countries with the Most Major Earthquakes | 0 | - | 4.94 | 117,132 |
| Country Superlatives - Top 2 | 0 | - | 4.99 | 70,386 |
| Former Flags | 0 | - | 4.97 | 107,412 |
| Years in History by Picture | 0 | - | 4.44 | 35,412 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,491 |
| Materials From History #2 | 0 | - | 4.59 | 31,445 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,858 |
| WWII Trivia #1 | 0 | - | 4.36 | 177,402 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,817 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,571 |
| Cold War Decoder | 0 | - | 4.83 | 52,233 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,381 |
| Events in History #2 | 0 | - | 4.49 | 71,627 |
| Events in History #4 | 0 | - | 4.44 | 44,247 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,972 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,945 |
| Assassinations in History | 0 | - | 4.21 | 66,145 |
| Famous Seconds | 0 | - | 4.22 | 46,538 |
| Ages and Eras | 0 | - | 4.39 | 67,638 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,464 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,755 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,138 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,947 |
| Female Historical Figures | 0 | - | 4.28 | 33,214 |
| Historical Blunders | 0 | - | 4.34 | 91,878 |
| People Who Died in Battle | 0 | - | 4.35 | 22,300 |
| Territorial Accessions | 0 | - | 4.36 | 34,752 |
| People Known as "The Great" | 0 | - | 4.46 | 24,626 |
| This Day in History - July | 0 | - | 4.49 | 36,433 |
| This Day in History - August | 0 | - | 4.42 | 43,331 |
| This Day in History - September | 0 | - | 4.55 | 57,392 |
| This Day in History - October | 0 | - | 4.49 | 37,602 |
| This Day in History - January | 0 | - | 4.50 | 46,668 |
| This Day in History - March | 0 | - | 4.45 | 43,628 |
| Ancient Civilizations | 0 | - | 4.64 | 37,897 |
| History Generator Puzzle #1 | 0 | - | 4.00 | 39,696 |
| History Generator Puzzle #3 | 0 | - | 4.03 | 20,355 |
| History Generator Puzzle #6 | 0 | - | 4.05 | 17,498 |
| History Generator Puzzle #5 | 0 | - | 4.18 | 20,003 |
| History Generator Puzzle #8 | 0 | - | 4.14 | 18,805 |
| History Generator Puzzle #7 | 0 | - | 4.16 | 20,354 |
| The Places They Went #1 | 0 | - | 4.74 | 33,501 |
| Famous Inventors | 0 | - | 4.43 | 43,518 |
| French History Multiple Choice | 0 | - | 4.55 | 32,991 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,785 |
| European History for Dummies | 0 | - | 4.83 | 89,717 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,012,954 |
| U.S. Army Ranks | 0 | - | 4.48 | 103,340 |
| Top 30 Most Powerful Militaries | 0 | - | 4.52 | 175,739 |
| Countries with Aircraft Carriers | 0 | - | 4.75 | 123,290 |
| Names of Army Units | 0 | - | 4.63 | 36,808 |
| Countries with the Most Skyscrapers | 0 | - | 4.92 | 143,893 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,485 |
| Countries with the Tallest Buildings | 0 | - | 4.93 | 104,184 |
| Formula One Countries Visited | 0 | - | 4.96 | 143,182 |
| Formula 1: Top 3 in Driver's Championship | 0 | - | 4.96 | 100,468 |
| All F1 Grand Prix Winners | 0 | - | 4.85 | 89,840 |
| Coldest Countries | 0 | - | 4.97 | 138,238 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,475 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 82,590 |
| IMDB Top 100 Movies | 0 | - | 4.45 | 204,536 |
| Authors with Books Turned into Movies | 0 | - | 4.45 | 62,823 |
| Corporate Partnerships | 0 | - | 4.56 | 36,870 |
| Prime Numbers 1-100 | 0 | - | 4.53 | 126,610 |
| Perfect Squares | 0 | - | 4.53 | 102,240 |
| Digits of Pi | 0 | - | 4.24 | 1,161,479 |
