| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,498 |
| 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 | 423,576 |
| Random U.S. States on a Map | 0 | - | 4.96 | 621,213 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,136 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,918 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,191 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,666 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,482 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,293 |
| Presidential Actors | 0 | - | 4.36 | 19,059 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,842 |
| US States Quiz | 0 | - | 5.00 | 16,693,748 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,932 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,209 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,496 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,299 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,712 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,792 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,621 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,737 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,792 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,215 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,800 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,837 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,361 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 172,302 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,874 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,048 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,511 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,874 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,176 |
| Vietnam War Countries | 0 | - | 4.83 | 93,582 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,247 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,494 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,373 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,645 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,443 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,702 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,422 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,817 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,514 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,057 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,069 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,792 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,921 |
| Pixelated United States Map | 0 | - | 4.89 | 93,440 |
| US States with an Empty Map | 0 | - | 5.00 | 618,591 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,684 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,643 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,322 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,372 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,662 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,614 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,868 |
| U.S. States By Population | 0 | - | 4.92 | 152,328 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,361 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,837 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,541 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,879 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,883 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,747 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,858 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,848 |
| 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 | 69,056 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,647 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,311 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,168 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,346 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,428 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,757 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,386 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,283 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,421 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,440 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,066 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,821 |
| Asia Map Quiz | 0 | - | 4.99 | 906,715 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,635 |
| U.S. State Flags | 0 | - | 4.89 | 166,969 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,537 |
| Hawaiian Islands | 0 | - | 4.83 | 42,423 |
| Rivers of the United States | 0 | - | 4.93 | 65,487 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,072 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,346 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,080 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,610 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,838 |
| 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 | 91,018 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,533 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,225,863 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,235 |
| Cities in European History #1 | 0 | - | 4.63 | 133,069 |
| Cities in U.S. History #1 | 0 | - | 4.30 | 42,860 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,958 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,586 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 103,151 |
| US States and State Capitals | 0 | - | 4.99 | 158,391 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,901 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,291 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,845 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,430 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,779 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,476 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 57,609 |
| The Only European Country ... | 0 | - | 4.91 | 213,724 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,045 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,460 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,182 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 124,675 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,671 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,305 |
| Countries of Africa | 0 | - | 5.00 | 2,506,660 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,281 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 83,149 |
| Vatican City Country Quiz | 0 | - | 4.53 | 43,989 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,783 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,617 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,915 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,766 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,423 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,896 |
| Australia Map Quiz | 0 | - | 4.94 | 342,399 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,231 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,004 |
| Flags of North and South America | 0 | - | 4.99 | 366,807 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,735 |
| Counties of England | 0 | - | 4.97 | 788,920 |
| African East Coast | 0 | - | 4.96 | 95,008 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,011 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,517,840 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,100 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,852 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,465 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,443 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,016 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,944 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,162 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,853 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,929 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,799 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,958 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,810 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,970 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,358 |
| Biggest European Cities by Century | 0 | - | 4.98 | 142,521 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,247 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,227 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,571 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,535 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,771 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,168 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,559 |
| Official Cities in the UK | 0 | - | 4.89 | 280,419 |
| U.S Cities by African-American Population | 0 | - | 4.42 | 94,706 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,455 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,317 |
| 1M Cities by Proximity - United States | 0 | - | 4.56 | 149,674 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 73,754 |
| Biggest Cities in a Strip of the United States Map | 0 | - | 4.74 | 40,584 |
| Former Capitals | 0 | - | 4.88 | 71,129 |
| Europe Capital to Country | 0 | - | 4.99 | 247,473 |
| Asia Capital to Country | 0 | - | 4.96 | 125,711 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,400 |
| European Capitals by Map | 0 | - | 4.99 | 136,157 |
| African Capitals by Map | 0 | - | 4.99 | 132,113 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,089 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,765 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,631 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,080 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,381 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,081 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,147 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,140 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,578 |
| European Coastal Capitals | 0 | - | 4.95 | 89,714 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,171 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,654 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,688 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,407 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,682 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,414 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,744 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,468 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,512 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,158 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,234 |
| Biggest British Empire Countries | 0 | - | 4.73 | 87,928 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,864 |
| Countries of the Middle East | 0 | - | 4.96 | 198,841 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,218 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,318 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,313 |
| Slavic Countries | 0 | - | 4.96 | 110,821 |
| African Island Countries | 0 | - | 4.96 | 100,749 |
