| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,491 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,470 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,027 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,571 |
| Random U.S. States on a Map | 0 | - | 4.96 | 621,192 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,131 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,918 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,128 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,661 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,481 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,284 |
| Presidential Actors | 0 | - | 4.36 | 19,058 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,840 |
| US States Quiz | 0 | - | 5.00 | 16,693,146 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,930 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,203 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,493 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,296 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,705 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,786 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,619 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,731 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,771 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,212 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,782 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,823 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,354 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 172,296 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,868 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,042 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,508 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,873 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,162 |
| Vietnam War Countries | 0 | - | 4.83 | 93,582 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,245 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,487 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,368 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,643 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,439 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,700 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,418 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,814 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,508 |
| Europe Map Quiz | 0 | - | 5.00 | 4,729,936 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,065 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,792 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,920 |
| Pixelated United States Map | 0 | - | 4.89 | 93,437 |
| US States with an Empty Map | 0 | - | 5.00 | 618,567 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,682 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,627 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,321 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,368 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,661 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,607 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,865 |
| U.S. States By Population | 0 | - | 4.92 | 152,326 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,356 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,835 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,540 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,877 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,879 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,745 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,855 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,846 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,065 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,457 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,054 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,647 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,308 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,164 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,343 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,427 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,755 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,381 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,276 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,419 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,418 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,030 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,758 |
| Asia Map Quiz | 0 | - | 4.99 | 906,669 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,634 |
| U.S. State Flags | 0 | - | 4.89 | 166,962 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,530 |
| Hawaiian Islands | 0 | - | 4.83 | 42,423 |
| Rivers of the United States | 0 | - | 4.93 | 65,484 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,068 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,344 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,078 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,601 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,837 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,627 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,592 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,013 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,533 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,225,810 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,216 |
| Cities in European History #1 | 0 | - | 4.63 | 133,066 |
| Cities in U.S. History #1 | 0 | - | 4.30 | 42,702 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,933 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,549 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 103,151 |
| US States and State Capitals | 0 | - | 4.99 | 158,378 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,894 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,289 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,844 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,418 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,778 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,469 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 57,607 |
| The Only European Country ... | 0 | - | 4.91 | 213,709 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,038 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,457 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,180 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 124,667 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,661 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,301 |
| Countries of Africa | 0 | - | 5.00 | 2,506,579 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,248 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 83,148 |
| Vatican City Country Quiz | 0 | - | 4.53 | 43,987 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,772 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,598 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,894 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,762 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,420 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,894 |
| Australia Map Quiz | 0 | - | 4.94 | 342,386 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,224 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,977 |
| Flags of North and South America | 0 | - | 4.99 | 366,777 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,711 |
| Counties of England | 0 | - | 4.97 | 788,900 |
| African East Coast | 0 | - | 4.96 | 95,004 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,009 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,517,803 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,097 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,850 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,449 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,435 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,016 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,935 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,153 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,850 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,927 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,793 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,957 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,807 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,969 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,356 |
| Biggest European Cities by Century | 0 | - | 4.98 | 142,441 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,241 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,221 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,567 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,530 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,769 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,166 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,556 |
| Official Cities in the UK | 0 | - | 4.89 | 280,408 |
| U.S Cities by African-American Population | 0 | - | 4.42 | 94,703 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,455 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,315 |
| 1M Cities by Proximity - United States | 0 | - | 4.56 | 149,670 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 73,753 |
| Biggest Cities in a Strip of the United States Map | 0 | - | 4.74 | 40,583 |
| Former Capitals | 0 | - | 4.88 | 71,128 |
| Europe Capital to Country | 0 | - | 4.99 | 247,449 |
| Asia Capital to Country | 0 | - | 4.96 | 125,706 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,398 |
| European Capitals by Map | 0 | - | 4.99 | 136,149 |
| African Capitals by Map | 0 | - | 4.99 | 132,112 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,078 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,755 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,631 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,066 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,376 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,077 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,144 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,139 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,575 |
| European Coastal Capitals | 0 | - | 4.95 | 89,711 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,169 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,635 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,685 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,407 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,680 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,414 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,742 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,468 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,509 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,153 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,229 |
| Biggest British Empire Countries | 0 | - | 4.73 | 87,271 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,860 |
| Countries of the Middle East | 0 | - | 4.96 | 198,836 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,215 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,315 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,308 |
| Slavic Countries | 0 | - | 4.96 | 110,819 |
| African Island Countries | 0 | - | 4.96 | 100,743 |
