| Capitals A-Z #1 | 0 | - | 4.86 | 51,422 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 236,241 |
| Richest Countries A-Z | 0 | - | 4.91 | 102,679 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,135 |
| Name a Country A-Z | 0 | - | 5.00 | 242,493 |
| Name a Minecraft Mob A-Z | 0 | - | 4.87 | 42,451 |
| Name a Valid Country A-Z | 0 | - | 4.98 | 121,216 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 129,916 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,822 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,572 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,111 |
| Countries that Start with A | 0 | - | 4.98 | 2,157,896 |
| Countries that Start with B | 0 | - | 4.95 | 2,289,916 |
| Countries that Start with C | 0 | - | 4.96 | 1,818,414 |
| Countries that Start with D | 0 | - | 4.96 | 707,068 |
| Countries that Start with E | 0 | - | 4.95 | 1,374,199 |
| Countries that Start with G | 0 | - | 4.97 | 1,499,837 |
| Countries that Start with H | 0 | - | 4.96 | 602,626 |
| Countries that Start with I | 0 | - | 4.92 | 1,285,632 |
| Countries that Start with J | 0 | - | 4.98 | 600,495 |
| Countries that Start with K | 0 | - | 4.97 | 813,607 |
| Countries that Start with L | 0 | - | 4.98 | 1,088,401 |
| Countries that Start with N | 0 | - | 4.93 | 1,115,335 |
| Countries that Start with P | 0 | - | 4.94 | 1,213,836 |
| Countries that Start with S | 0 | - | 4.98 | 1,751,691 |
| Countries that Start with T | 0 | - | 4.90 | 1,008,117 |
| Countries that Start with U | 0 | - | 4.97 | 903,053 |
| Countries that Start with V | 0 | - | 4.98 | 608,132 |
| Countries that Start with F | 0 | - | 4.83 | 615,955 |
| Countries that Start with M | 0 | - | 4.97 | 1,379,043 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,180 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,077 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,854 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,707 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,182 |
| Middle East A-Z | 0 | - | 4.47 | 45,965 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 72,586 |
| 1950s Decade Quiz | 0 | - | 4.41 | 49,164 |
| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,864 |
| Military History Vocabulary | 0 | - | 4.91 | 66,998 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,374 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,818 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,544 |
| A-Z Cities by Pictures | 0 | - | 4.56 | 43,761 |
| Four Letter Geography A-Z #1 | 0 | - | 4.60 | 32,467 |
| Four Letter Geography A-Z #2 | 0 | - | 4.56 | 34,916 |
| WWII Geography | 0 | - | 4.81 | 120,079 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,355 |
| WWII Figures by Picture | 0 | - | 4.89 | 65,036 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,628 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,954 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,295 |
| The Bible A-Z | 0 | - | 4.29 | 59,681 |
| One Country By Letter By Continent | 0 | - | 5.00 | 123,252 |
| Capitals A-Z #2 | 0 | - | 4.45 | 26,758 |
| European Geography A-Z | 0 | - | 4.29 | 49,180 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,396 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,344 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 49,997 |
| One Country By Letter By Continent on the Map | 0 | - | 4.99 | 46,717 |
| One Capital by Letter by Continent | 0 | - | 4.98 | 17,207 |
| France A-Z | 0 | - | 4.16 | 38,162 |
| Switzerland A-Z | 0 | - | 4.45 | 25,613 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,407 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,716 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,409 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,914 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,130 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,683 |
| WWI... or WWII? | 0 | - | 4.85 | 141,812 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,951 |
| Name the War | 0 | - | 4.37 | 201,418 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,510 |
| Names for Warriors | 0 | - | 4.40 | 36,897 |
| The 17th Century | 0 | - | 4.54 | 53,799 |
| 1940s Decade Quiz | 0 | - | 4.51 | 51,920 |
| 2010s Decade Quiz | 0 | - | 4.53 | 102,165 |
| Military History A-Z | 0 | - | 4.20 | 21,128 |
| Countries that Start with R | 0 | - | 4.43 | 446,389 |
| Countries Bordering "U" Countries | 0 | - | 4.82 | 24,372 |
| World Cities A-Z by Clue #1 | 0 | - | 4.50 | 67,865 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 35,373 |
| Africa A-Z | 0 | - | 4.57 | 46,560 |
| African Geography A-Z | 0 | - | 4.33 | 21,460 |
| London A-Z | 0 | - | 4.10 | 40,741 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,342 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,163 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,369 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,749 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,482 |
| Empires by Maps | 0 | - | 4.98 | 119,870 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,901 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,575 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,316 |
| Quiz on the Year 2001 | 0 | - | 4.48 | 24,290 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,114 |
| People Portrayed by Andy Warhol | 0 | - | 4.35 | 37,887 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,313,269 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,050 |
| European Geography By Letter - A | 0 | - | 4.51 | 144,445 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,492 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,239 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,993 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,071 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,042 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,171 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,505 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,194 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,758 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,602 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,341 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,806 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,278 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,073 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,310 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,926 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,725 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,300 |
| Turkey A-Z | 0 | - | 4.04 | 11,820 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,182 |
| Metals of Antiquity | 0 | - | 4.94 | 93,269 |
| Popular Royal Names | 0 | - | 4.27 | 124,820 |
| Russian History A-Z | 0 | - | 4.38 | 31,565 |
| History of The Netherlands | 0 | - | 4.46 | 17,403 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,559 |
| History: What Came First? #1 | 0 | - | 4.87 | 105,030 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,356 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,493 |
| First Names of Painters | 0 | - | 4.43 | 59,792 |
| Notable People of WWII | 0 | - | 4.53 | 85,576 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,845 |
| World War I Quiz | 0 | - | 4.78 | 101,113 |
| WWI A-Z | 0 | - | 4.50 | 38,248 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 29,930 |
| NBA Basketball by Year, 1970–1999 | 0 | - | 4.28 | 44,908 |
| NBA Basketball by Year, 2000–Present | 0 | - | 4.34 | 60,701 |
| 1970s Decade Quiz | 0 | - | 4.20 | 52,830 |
| 2000s Decade Quiz | 0 | - | 4.23 | 121,318 |
| 1980s Decade Quiz | 0 | - | 4.38 | 77,061 |
| 1910s Decade Quiz | 0 | - | 4.20 | 52,543 |
| 1930s Decade Quiz | 0 | - | 4.28 | 48,954 |
| 1920s Decade Quiz | 0 | - | 4.33 | 49,616 |
| 1850s Decade Quiz | 0 | - | 4.42 | 35,141 |
| 1790s Decade Quiz | 0 | - | 4.55 | 33,590 |
| 1800s Decade Quiz | 0 | - | 4.47 | 31,884 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,162 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,765 |
| Best Selling Artists by Letter Quiz | 0 | - | 4.04 | 43,327 |
| Colors by Letter | 0 | - | 4.25 | 162,403 |
| Asian Geography By Letter - S | 0 | - | 4.17 | 56,040 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,172 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,513 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,691 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,338 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,188 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,854 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,456 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,712 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 51,862 |
| Asian Geography by Letter - G | 0 | - | 4.35 | 51,148 |
| Asian Geography by Letter - I | 0 | - | 4.36 | 67,704 |
| Asian Geography by Letter - C | 0 | - | 4.32 | 64,661 |
| Asian Geography by Letter - N | 0 | - | 4.33 | 50,166 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,975 |
| Asian Geography By Letter - J | 0 | - | 4.25 | 34,647 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,209 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,694 |
| World Cities A-Z by Clue #2 | 0 | - | 4.40 | 58,837 |
| California Cities A-Z | 0 | - | 4.06 | 17,174 |
| Birds A-Z | 0 | - | 4.24 | 36,491 |
| Canada A-Z | 0 | - | 4.73 | 32,765 |
| Texas A-Z | 0 | - | 4.18 | 16,354 |
| Pennsylvania A-Z | 0 | - | 4.11 | 7,537 |
| Hawaii A-Z | 0 | - | 4.28 | 13,445 |
| Ohio A-Z | 0 | - | 4.21 | 6,376 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,856 |
| Influential Women in History | 0 | - | 4.42 | 35,478 |
| Cradles of Civilization | 0 | - | 4.46 | 39,533 |
| Former Flags | 0 | - | 4.97 | 107,423 |
| Materials From History #1 | 0 | - | 4.56 | 51,460 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,861 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,797 |
| UN Secretaries-General | 0 | - | 4.40 | 7,782 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,591 |
| WWII Trivia #1 | 0 | - | 4.36 | 177,409 |
| WWII Decoder | 0 | - | 4.41 | 53,465 |
| World War II Multiple Choice | 0 | - | 4.38 | 103,628 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 55,261 |
| WWII for Dummies | 0 | - | 4.79 | 104,672 |
| Cold War Decoder | 0 | - | 4.83 | 52,235 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,985 |
| Biggest Nations and Empires Ever | 0 | - | 4.52 | 145,706 |
| Famous Explorers | 0 | - | 4.58 | 36,113 |
| Famous Empires by Description | 0 | - | 4.73 | 118,305 |
| Answers by Time Period | 0 | - | 4.64 | 55,500 |
| People Who Died in Battle | 0 | - | 4.35 | 22,303 |
| Quiz on the Year 1997 | 0 | - | 4.40 | 21,025 |
| Quiz on the Year 1998 | 0 | - | 4.33 | 17,289 |
| Quiz on the Year 2000 | 0 | - | 4.08 | 21,197 |
| 1900s Decade Quiz | 0 | - | 4.18 | 44,158 |
