| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,559 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,485 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,035 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,977 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,924 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,482 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,454 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,203 |
| US States Quiz | 0 | - | 5.00 | 16,701,845 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,845 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,876 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,962 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,280 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,394 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,764 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,664 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,888 |
| Vietnam War Countries | 0 | - | 4.83 | 93,616 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,941 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,282 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,684 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,477 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,859 |
| Most-Visited Countries by Popes | 0 | - | 4.55 | 83,183 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,241 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,999 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,039 |
| Pixelated United States Map | 0 | - | 4.89 | 93,488 |
| US States with an Empty Map | 0 | - | 5.00 | 618,868 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,741 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,369 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,425 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,679 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,919 |
| U.S. States By Population | 0 | - | 4.92 | 152,379 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,410 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,869 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,907 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,767 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,889 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,886 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,085 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,495 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,072 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,662 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,408 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 172,458 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,965 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,093 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,544 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,365 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,891 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,316 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,637 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,424 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,496 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,733 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,319 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,448 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,585 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,529 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,105 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,583 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,809 |
| Rivers of the United States | 0 | - | 4.93 | 65,523 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,939 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,905 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,721 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,594 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,727 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,957 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,875 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,663 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,602 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,072 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,554 |
| Africa Capitals Quiz | 0 | - | 4.99 | 730,309 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,934 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,196 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,309 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,383 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,473 |
| Countries of Africa | 0 | - | 5.00 | 2,508,038 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,419 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,949 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,529 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,353 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,419 |
| Asia Map Quiz | 0 | - | 4.99 | 907,071 |
| Australia Map Quiz | 0 | - | 4.94 | 342,500 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,312 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,661 |
| U.S. State Flags | 0 | - | 4.89 | 167,118 |
| Hawaiian Islands | 0 | - | 4.83 | 42,428 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,210 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,471 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,090 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,047 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,562 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,516 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,589 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,226,788 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,620 |
| Countries of Europe by Population | 0 | - | 4.98 | 178,090 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,234 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,395 |
| Biggest European Cities by Century | 0 | - | 4.98 | 143,587 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,296 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,278 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,614 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,572 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,815 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,221 |
| Cities in European History #1 | 0 | - | 4.63 | 133,130 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,461 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,364 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 73,822 |
| Cities in U.S. History #1 | 0 | - | 4.31 | 44,287 |
| Former Capitals | 0 | - | 4.88 | 71,146 |
| Europe Capital to Country | 0 | - | 4.99 | 247,911 |
| Asia Capital to Country | 0 | - | 4.96 | 125,763 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,463 |
| European Capitals by Map | 0 | - | 4.99 | 136,291 |
| African Capitals by Map | 0 | - | 4.99 | 132,188 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,139 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,194 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,619 |
| European Coastal Capitals | 0 | - | 4.95 | 89,762 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,190 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,818 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,813 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,424 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 103,191 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,005 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,862 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,833 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,554 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,821 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,571 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,346 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 57,624 |
| Countries of the Middle East | 0 | - | 4.96 | 198,937 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,271 |
| The Only European Country ... | 0 | - | 4.91 | 213,846 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,157 |
| Slavic Countries | 0 | - | 4.96 | 110,863 |
| African Island Countries | 0 | - | 4.96 | 100,794 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,545 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,211 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,499 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 124,737 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,748 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,358 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,717 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,712 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,497 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,116 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,632 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,718 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,770 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,158 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,167 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,294 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,582 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,282 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,425 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,257 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,509 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,982 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,274 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,240 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,476 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,805 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,207 |
| North America Map Quiz | 0 | - | 4.98 | 244,485 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,476 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,929 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,436 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,346 |
| Random U.S. States on a Map | 0 | - | 4.96 | 621,564 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,431 |
| Flags of North and South America | 0 | - | 4.99 | 367,279 |
| Australian States and Territories | 0 | - | 4.96 | 140,912 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,946 |
| Territories of the United States | 0 | - | 4.79 | 52,145 |
| Counties of England | 0 | - | 4.97 | 789,222 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,907 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,608 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,021 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,382 |
| African East Coast | 0 | - | 4.96 | 95,057 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,690 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,468 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,840 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,667 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,777 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,518,754 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,691 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,115 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 80,873 |
