| Countries with the Most Skyscrapers | 0 | - | 4.93 | 132,328 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.91 | 89,799 |
| Countries with the Tallest Buildings | 0 | - | 4.95 | 74,594 |
| Tall Building Cities - United States | 0 | - | 4.47 | 66,425 |
| Famous Homes - Who Lived There? | 0 | - | 4.07 | 26,171 |
| Famous Firsts #1 | 0 | - | 4.42 | 65,775 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 66,256 |
| Invasions | 0 | - | 4.71 | 89,445 |
| 19th Century A-Z | 0 | - | 4.82 | 34,330 |
| Cities with the Tallest Buildings | 0 | - | 4.15 | 79,476 |
| "Second Best" History Edition | 0 | - | 4.94 | 46,437 |
| Normandy D-Day Beaches | 0 | - | 4.81 | 36,617 |
| Territory Changes in World War I | 0 | - | 4.87 | 40,283 |
| Famous Empires in History | 0 | - | 4.82 | 103,437 |
| Empires A-Z | 0 | - | 4.48 | 39,783 |
| People Depicted in Paintings | 0 | - | 4.55 | 41,164 |
| History by Letter - A | 0 | - | 4.50 | 138,397 |
| History by Letter - B | 0 | - | 4.48 | 155,930 |
| History by Letter - C | 0 | - | 4.71 | 153,505 |
| History by Letter - E | 0 | - | 4.50 | 127,209 |
| History by Letter - G | 0 | - | 4.48 | 110,526 |
| History by Letter - H | 0 | - | 4.42 | 123,286 |
| History by Letter - J | 0 | - | 4.49 | 139,748 |
| History by Letter - N | 0 | - | 4.44 | 94,133 |
| History by Letter - S | 0 | - | 4.46 | 84,834 |
| History by Letter - W | 0 | - | 4.45 | 98,376 |
| History by Letter - M | 0 | - | 4.55 | 109,066 |
| History by Letter - K | 0 | - | 4.48 | 92,028 |
| History by Letter - L | 0 | - | 4.47 | 102,176 |
| History by Letter - I | 0 | - | 4.48 | 94,894 |
| NATO Military Alphabet | 0 | - | 4.98 | 486,859 |
| Famous Battles Quiz | 0 | - | 4.25 | 46,653 |
| Name the War Quiz | 0 | - | 4.39 | 190,049 |
| Famous U.S. Generals | 0 | - | 4.25 | 36,971 |
| Religions by Country of Origin Quiz | 0 | - | 4.29 | 72,666 |
| Famous Families #1 | 0 | - | 4.25 | 79,380 |
| Names for Warriors | 0 | - | 4.40 | 34,560 |
| Famous Firsts #2 | 0 | - | 4.01 | 78,580 |
| Former Countries by Territory Map | 0 | - | 4.97 | 85,819 |
| Empires by Maps | 0 | - | 4.98 | 94,476 |
| Art Works Picture Quiz #1 | 0 | - | 4.50 | 96,790 |
| Art Works Picture Quiz #2 | 0 | - | 4.46 | 86,314 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 46,433 |
| People in History A-Z #1 | 0 | - | 4.65 | 90,792 |
| People in History A-Z #2 | 0 | - | 4.46 | 50,125 |
| People in History A-Z #3 | 0 | - | 4.47 | 42,287 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.46 | 32,281 |
| Countries by Military Spending | 0 | - | 4.93 | 159,507 |
| Countries with the Most Skyscrapers per Capita | 0 | - | 4.71 | 66,848 |
| 100 Most Common English Words | 0 | - | 4.90 | 1,170,939 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.90 | 97,630 |
| Metals of Antiquity | 0 | - | 4.94 | 85,432 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 39,826 |
| Space Exploration Trivia | 0 | - | 4.36 | 33,490 |
| WWI... or WWII? | 0 | - | 4.84 | 123,411 |
| Oldest Things | 0 | - | 3.96 | 64,611 |
| Famous Firsts #3 - The United States | 0 | - | 4.17 | 13,301 |
| 20th Century A-Z | 0 | - | 4.48 | 38,681 |
| History by Letter - D | 0 | - | 4.34 | 125,670 |
| History by Letter - F | 0 | - | 4.18 | 104,110 |
| History by Letter - O | 0 | - | 4.29 | 90,993 |
| History by Letter - P | 0 | - | 4.37 | 98,361 |
| History by Letter - Q | 0 | - | 4.35 | 73,967 |
| History by Letter - R | 0 | - | 4.22 | 112,471 |
| History by Letter - T | 0 | - | 4.40 | 96,480 |
| History by Letter - U | 0 | - | 4.19 | 92,139 |
| History by Letter - V | 0 | - | 4.27 | 74,525 |
| History by Letter - Y | 0 | - | 4.28 | 80,823 |
| History by Letter - Z | 0 | - | 4.20 | 71,630 |
| The 3rd and 4th Century | 0 | - | 4.53 | 19,901 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 13,490 |
| Years in History #1 - Multiple Choice | 0 | - | 4.83 | 62,937 |
| Most Common English Verbs - Extreme | 0 | - | 4.95 | 136,696 |
| Classic Novels by Plot #2 | 0 | - | 4.81 | 31,130 |
| Top Five Exporting Partners by Country | 0 | - | 4.84 | 61,993 |
| Google What's the Difference? - History | 0 | - | 4.21 | 43,474 |
| Cradles of Civilization | 0 | - | 4.41 | 32,320 |
| Materials From History #1 | 0 | - | 4.54 | 44,932 |
| Mythical Creatures Quiz #1 | 0 | - | 4.91 | 656,056 |
| Art Works Picture Quiz #3 | 0 | - | 4.39 | 41,227 |
| Notable People of WWII | 0 | - | 4.52 | 80,095 |
| WWII Trivia #2 | 0 | - | 4.50 | 86,653 |
| World War I Quiz | 0 | - | 4.78 | 92,754 |
| WWI A-Z | 0 | - | 4.48 | 35,393 |
| Biggest Nations and Empires Ever | 0 | - | 4.55 | 133,741 |
| Famous Explorers | 0 | - | 4.71 | 32,693 |
| Answers by Time Period | 0 | - | 4.49 | 42,651 |
| Territorial Accessions | 0 | - | 4.43 | 32,231 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.53 | 27,369 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.50 | 24,042 |
| 16th Century A-Z | 0 | - | 4.53 | 15,868 |
| 18th Century A-Z | 0 | - | 4.60 | 31,558 |
| Same Start and End Letter - History #1 | 0 | - | 4.12 | 23,387 |
| Same Start and End Letter - History #2 | 0 | - | 4.08 | 23,197 |
| History Ending in Z | 0 | - | 4.35 | 12,486 |
| History Containing the Letter X | 0 | - | 4.28 | 13,796 |
| Most Important People in History | 0 | - | 3.97 | 46,400 |
| Top Arms Exporting Countries | 0 | - | 4.95 | 76,496 |
| Monarchies of the World | 0 | - | 4.93 | 152,942 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 81,658 |
| Countries where the Sea Freezes | 0 | - | 4.91 | 81,367 |
| Largest Countries Without Deserts | 0 | - | 4.86 | 66,262 |
| Disney Animated Characters | 0 | - | 4.89 | 574,986 |
| Numbers Tile Select Quiz | 0 | - | 4.99 | 64,314 |
| Fast Math - Addition | 0 | - | 4.82 | 479,211 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.78 | 702,280 |
| Fast Math - Double That Number! | 0 | - | 4.81 | 548,495 |
| A Quiz About Buddhism | 0 | - | 4.81 | 16,727 |
| Astronomy Quiz | 0 | - | 4.87 | 64,421 |
| Solar System Trivia | 0 | - | 4.95 | 38,514 |
| Google What's the Difference? - Animals | 0 | - | 4.93 | 87,339 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.90 | 57,916 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.86 | 91,353 |
| Countries that Start with a Vowel | 0 | - | 4.98 | 107,400 |
| Geography by Letter - T | 0 | - | 4.81 | 121,919 |
| Countries with the Most JetPunk Users | 0 | - | 4.99 | 128,521 |
| Most Common JetPunk Answers - Countries | 0 | - | 4.89 | 75,386 |
| Countries with the Most Major Earthquakes | 0 | - | 4.94 | 109,406 |
| Country Superlatives - Top 2 | 0 | - | 4.99 | 66,465 |
| Influential Women in History | 0 | - | 4.47 | 30,472 |
| Former Flags | 0 | - | 4.98 | 81,545 |
| Historical Events - AD or BC? | 0 | - | 4.75 | 52,109 |
| Materials From History #2 | 0 | - | 4.58 | 24,885 |
| WWII Trivia #1 | 0 | - | 4.36 | 161,935 |
| WWII A-Z #1 | 0 | - | 4.79 | 93,344 |
| WWII A-Z #2 | 0 | - | 4.48 | 50,001 |
| 20th Century Dates Quiz | 0 | - | 4.53 | 37,921 |
| Events in History #2 | 0 | - | 4.47 | 66,923 |
| Events in History #4 | 0 | - | 4.43 | 41,010 |
| Name a Valid Year in History | 0 | - | 4.92 | 53,160 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.18 | 46,537 |
| Assassinations in History Quiz | 0 | - | 4.17 | 63,122 |
| Famous Seconds Quiz | 0 | - | 4.21 | 44,588 |
| Ages and Eras Quiz | 0 | - | 4.36 | 64,501 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.21 | 38,330 |
| Titled People Quiz #1 | 0 | - | 4.14 | 43,865 |
| Titled People Quiz #3 | 0 | - | 4.33 | 41,330 |
| Job Titles Quiz #1 | 0 | - | 4.23 | 73,547 |
| Historical Blunders | 0 | - | 4.32 | 86,751 |
| People Who Died in Battle | 0 | - | 4.31 | 21,422 |
| This Day in History - April | 0 | - | 4.42 | 43,327 |
| This Day in History - July | 0 | - | 4.48 | 35,079 |
| This Day in History - August | 0 | - | 4.41 | 41,770 |
| This Day in History - September | 0 | - | 4.54 | 54,885 |
| This Day in History - October | 0 | - | 4.49 | 36,301 |
| This Day in History - January | 0 | - | 4.53 | 44,440 |
| This Day in History - February | 0 | - | 4.41 | 38,383 |
| This Day in History - March | 0 | - | 4.44 | 41,933 |
| The 7 Wonders of the Ancient World | 0 | - | 4.79 | 65,638 |
| Ancient Civilizations | 0 | - | 4.55 | 34,636 |
| History Generator Puzzle #3 | 0 | - | 4.09 | 17,861 |
| History Generator Puzzle #5 | 0 | - | 4.15 | 18,003 |
| History Generator Puzzle #8 | 0 | - | 4.08 | 17,309 |
| History Generator Puzzle #7 | 0 | - | 4.09 | 15,439 |
| The Places They Went #1 | 0 | - | 4.77 | 32,388 |
| Famous Inventors | 0 | - | 4.44 | 42,437 |
| People in History A-Z #5 | 0 | - | 4.08 | 29,963 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.34 | 28,019 |
| People in History A-Z #4 | 0 | - | 4.13 | 21,346 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.14 | 942,786 |
| U.S. Army Ranks | 0 | - | 4.45 | 94,694 |
| Top 30 Most Powerful Militaries | 0 | - | 4.58 | 162,509 |
| Countries with Aircraft Carriers | 0 | - | 4.79 | 118,026 |
| Names of Army Units | 0 | - | 4.65 | 33,074 |
| Formula One World Champions | 0 | - | 4.97 | 299,692 |
| Formula One Countries Visited | 0 | - | 4.95 | 116,672 |
| Formula 1: Top 3 in Driver's Championship | 0 | - | 4.94 | 66,257 |
| Coldest Countries | 0 | - | 4.97 | 124,751 |
| Five Coldest Countries by Continent | 0 | - | 4.96 | 58,285 |
| Countries with the Least Precipitation | 0 | - | 4.89 | 68,088 |
| IMDB Top 100 Movies | 0 | - | 4.55 | 168,221 |
| Disney Songs in Movies | 0 | - | 4.41 | 351,803 |
| Authors with Books Turned into Movies | 0 | - | 4.47 | 58,482 |
| Classic Novels by Plot #1 | 0 | - | 4.42 | 67,992 |
| Corporate Partnerships Quiz | 0 | - | 4.56 | 35,337 |
| Prime Numbers 1-100 | 0 | - | 4.55 | 92,255 |
| Perfect Squares | 0 | - | 4.52 | 94,547 |
| Digits of Pi | 0 | - | 4.25 | 1,050,650 |
| Mathematics General Knowledge | 0 | - | 4.46 | 58,565 |
| Major World Religions | 0 | - | 4.76 | 88,722 |
| Religion General Knowledge #1 | 0 | - | 4.41 | 87,081 |
| Religion General Knowledge #2 | 0 | - | 4.48 | 70,009 |
| Religion General Knowledge #3 | 0 | - | 4.50 | 65,852 |
| Religion General Knowledge #5 | 0 | - | 4.51 | 43,147 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.87 | 68,746 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 91,726 |
| Geography by Letter on the World Map - C | 0 | - | 4.84 | 102,597 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 140,036 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 181,530 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 161,923 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 176,461 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 287,013 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 167,553 |
| Countries with the Most Nobel Prizes | 0 | - | 4.86 | 83,673 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.94 | 56,299 |
| Five Least Guessed Countries by Continent | 0 | - | 4.96 | 81,041 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.90 | 79,722 |
| Most Guessed Cities by Country #2 | 0 | - | 4.92 | 55,986 |
| Most Guessed Cities by Country #1 | 0 | - | 4.92 | 84,942 |
| Five Most Guessed Cities by Continent | 0 | - | 4.97 | 104,593 |
