| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,360 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,638 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,769 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,669 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,425 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,319 |
| US States Quiz | 0 | - | 5.00 | 16,829,890 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,351 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,570 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,115 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 93,473 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,524 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,312 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,702 |
| Vietnam War Countries | 0 | - | 4.83 | 94,062 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,178 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,555 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,145 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,335 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,504 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,603 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,780 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,023 |
| Pixelated United States Map | 0 | - | 4.87 | 94,063 |
| US States with an Empty Map | 0 | - | 5.00 | 623,208 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,633 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,154 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,194 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,681 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,954 |
| U.S. States By Population | 0 | - | 4.92 | 152,997 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,178 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,311 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,368 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,100 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,453 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,762 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,500 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,039 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,417 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,107 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,311 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 174,773 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,743 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,658 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,009 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 143,607 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,068 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,166 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,472 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,129 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,155 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,096 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,095 |
| Countries Closest to Maine | 0 | - | 4.85 | 66,968 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,525 |
| Europe Map Quiz | 0 | - | 5.00 | 4,755,195 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,593 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,096 |
| Rivers of the United States | 0 | - | 4.93 | 66,066 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,335 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,406 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,715 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,371 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,409 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,880 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,471 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,387 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,821 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,795 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,833 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,999 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,811 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,535 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,749 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,240 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,973 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,451 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,508 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,529 |
| Asia Map Quiz | 0 | - | 4.99 | 914,368 |
| Random U.S. States on a Map | 0 | - | 4.96 | 624,986 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,004 |
| U.S. State Flags | 0 | - | 4.89 | 169,698 |
| Hawaiian Islands | 0 | - | 4.83 | 42,651 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,474 |
| U.S. States that Border Canada | 0 | - | 4.91 | 184,318 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,267 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,739 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,313 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,825 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,239,824 |
| Flags of Asia Quiz | 0 | - | 4.99 | 611,355 |
| Countries of Europe by Population | 0 | - | 4.98 | 180,099 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,356 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 70,770 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,226 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,086 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,061 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,394 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,151 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,427 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,064 |
| Cities in European History #1 | 0 | - | 4.63 | 133,784 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,557 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 110,390 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 74,805 |
| Cities in U.S. History #1 | 0 | - | 4.31 | 45,384 |
| Africa Capitals Quiz | 0 | - | 4.99 | 735,739 |
| Former Capitals | 0 | - | 4.88 | 71,374 |
| Asia Capitals Quiz | 0 | - | 4.98 | 690,930 |
| Europe Capital to Country | 0 | - | 4.99 | 249,533 |
| Asia Capital to Country | 0 | - | 4.96 | 126,459 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,559 |
| European Capitals by Map | 0 | - | 4.99 | 138,523 |
| African Capitals by Map | 0 | - | 4.99 | 133,338 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,379 |
| Asian Capitals by Map | 0 | - | 4.98 | 62,066 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,865 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,223 |
| European Coastal Capitals | 0 | - | 4.95 | 90,366 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,493 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,113 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 223,527 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,738 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 103,825 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,518 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,165 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,077 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,250 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,591 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,814 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,148 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 57,901 |
| Countries of the Middle East | 0 | - | 4.96 | 200,727 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,994 |
| The Only European Country ... | 0 | - | 4.91 | 215,959 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,719 |
| Slavic Countries | 0 | - | 4.96 | 111,486 |
| African Island Countries | 0 | - | 4.96 | 101,412 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,761 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,021 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,576 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,787 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,555 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,035 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,235 |
| Countries of Africa | 0 | - | 5.00 | 2,529,728 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,445 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,643 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,268 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,148 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,631 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,414 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,516 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,507 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,082 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,960 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,378 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,988 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,964 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,797 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,065 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,100 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,380,768 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,468 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,230 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,271 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,976 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,448 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,715 |
| North America Map Quiz | 0 | - | 4.98 | 247,618 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,620 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,598 |
| Australia Map Quiz | 0 | - | 4.95 | 343,808 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,932 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,864 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,079 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,010 |
| Flags of Africa Quiz | 0 | - | 5.00 | 469,204 |
| Flags of North and South America | 0 | - | 4.99 | 371,837 |
| Australian States and Territories | 0 | - | 4.96 | 141,687 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,286 |
| Territories of the United States | 0 | - | 4.79 | 52,331 |
| Counties of England | 0 | - | 4.97 | 794,734 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,575 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,867 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,228 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,570 |
| African East Coast | 0 | - | 4.96 | 95,812 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,242 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,650 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,957 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,046 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 229,993 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,533,521 |
| Confederate States of the U.S. Civil War | 0 | - | 4.90 | 129,122 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,421 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,214 |
| U.S. Senators by State | 0 | - | 4.45 | 39,905 |
