| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 194,281 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,811 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,206 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,712 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,082 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,897 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,160 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 235,097 |
| US States Quiz | 0 | - | 5.00 | 16,970,847 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,431 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,848 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,802 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,384 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,725 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,383 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,225 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,670 |
| Vietnam War Countries | 0 | - | 4.82 | 94,529 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,976 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,981 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,618 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,361 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,312 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 84,089 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,065 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,387 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,815 |
| Pixelated United States Map | 0 | - | 4.88 | 94,706 |
| US States with an Empty Map | 0 | - | 5.00 | 627,789 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,898 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 112,125 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,126 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,156 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,151 |
| U.S. States By Population | 0 | - | 4.92 | 154,031 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,076 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,802 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,977 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,482 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,001 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,552 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,117 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,595 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,779 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,593 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,470 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 177,614 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,835 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,300 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,531 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 150,474 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,268 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,107 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,508 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,278 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,046 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,318 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,768 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,976 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,500 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,428 |
| Europe Map Quiz | 0 | - | 5.00 | 4,782,411 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,338 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,998 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,353 |
| Rivers of the United States | 0 | - | 4.93 | 66,579 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,956 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,384 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,863 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,160 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,288 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,983 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,741 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,355 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 94,110 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,699 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,164 |
| Africa Capitals Quiz | 0 | - | 4.99 | 742,649 |
| Asia Capitals Quiz | 0 | - | 4.98 | 697,726 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 89,682 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,801 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,223 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 162,151 |
| Countries of Africa | 0 | - | 5.00 | 2,554,714 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,590 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,536 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,404 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,350 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,685 |
| Asia Map Quiz | 0 | - | 4.99 | 923,672 |
| Australia Map Quiz | 0 | - | 4.95 | 345,883 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,883 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,379 |
| U.S. State Flags | 0 | - | 4.89 | 172,349 |
| Hawaiian Islands | 0 | - | 4.83 | 42,892 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,401 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,341 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,475 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,582 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,155 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,366 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,286 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,802 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,718 |
| Countries of Europe by Population | 0 | - | 4.98 | 182,542 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,253 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,356 |
| Biggest European Cities by Century | 0 | - | 4.99 | 146,044 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,783 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,447 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,117 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,460 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,794 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,655 |
| Cities in European History #1 | 0 | - | 4.63 | 134,502 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,671 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,315 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 75,883 |
| Cities in U.S. History #1 | 0 | - | 4.31 | 45,503 |
| Former Capitals | 0 | - | 4.88 | 71,632 |
| Europe Capital to Country | 0 | - | 4.99 | 251,764 |
| Asia Capital to Country | 0 | - | 4.96 | 127,271 |
| EU Capitals with No Hints | 0 | - | 4.96 | 146,756 |
| European Capitals by Map | 0 | - | 4.99 | 141,697 |
| African Capitals by Map | 0 | - | 4.99 | 141,768 |
| Asian Capitals by Map | 0 | - | 4.98 | 63,758 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,715 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 85,044 |
| European Coastal Capitals | 0 | - | 4.95 | 91,169 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,107 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 272,073 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 225,473 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,092 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 104,562 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,431 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,506 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,191 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,987 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,684 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,833 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,374 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 58,214 |
| Countries of the Middle East | 0 | - | 4.96 | 202,371 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,001 |
| The Only European Country ... | 0 | - | 4.91 | 218,539 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,581 |
| Slavic Countries | 0 | - | 4.96 | 112,232 |
| African Island Countries | 0 | - | 4.96 | 102,307 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,251 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,864 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,115 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,584 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,176 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,248 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,029,607 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,644 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,177 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,410 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,154 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,348 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,410 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,889 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,674 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,892 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 117,346 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,135 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,777 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 109,038 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 34,004 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,483 |
| South America Map Quiz | 0 | - | 5.00 | 1,554,800 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,486 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,653 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,328 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,674 |
| North America Map Quiz | 0 | - | 4.98 | 251,065 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,766 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,459 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,422 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,665 |
| Random U.S. States on a Map | 0 | - | 4.96 | 629,502 |
| Flags of Africa Quiz | 0 | - | 5.00 | 476,196 |
| Flags of North and South America | 0 | - | 4.99 | 376,154 |
| Australian States and Territories | 0 | - | 4.96 | 142,687 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,463 |
| Territories of the United States | 0 | - | 4.80 | 52,578 |
| Counties of England | 0 | - | 4.97 | 801,715 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,199 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.91 | 50,463 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,232 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,454 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,841 |
| African East Coast | 0 | - | 4.96 | 96,616 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,945 |
| Top African Languages on a Map | 0 | - | 4.94 | 75,023 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,330 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,378 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,343 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,553,086 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,560 |
