| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,518 |
| Vietnam War Countries | 0 | - | 4.82 | 94,488 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 162,039 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,063 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,156 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,770 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,466 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,195 |
| Random U.S. States on a Map | 0 | - | 4.96 | 629,002 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 148,145 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,024 |
| The American Revolution | 0 | - | 4.52 | 54,318 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 62,953 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 119,795 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,755 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,784 |
| US States Quiz | 0 | - | 5.00 | 16,956,905 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,747 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,474 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,964 |
| Category Elimination - U.S. States #2 | 0 | - | 4.83 | 135,218 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,182 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,571 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,297 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,346 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,120 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,542 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 97,728 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,925 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,676 |
| Arms Exports - United States | 0 | - | 4.77 | 62,628 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,313 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,331 |
| Biggest Axis-Controlled Cities | 0 | - | 4.44 | 48,985 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,089 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,936 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,556 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 194,173 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,234 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,217 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,015 |
| Europe Map Quiz | 0 | - | 5.00 | 4,779,397 |
| Pixelated United States Map | 0 | - | 4.88 | 94,634 |
| US States with an Empty Map | 0 | - | 5.00 | 627,298 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,750 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,963 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,975 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,622 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,981 |
| U.S. States By Population | 0 | - | 4.92 | 153,934 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,961 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,739 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,927 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,433 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,941 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,489 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,062 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,553 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,745 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,547 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,367 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 177,280 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,713 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,175 |
| Random Cities Near Chicago on a Map | 0 | - | 4.52 | 34,537 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 124,441 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,473 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,248 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,986 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,396 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,212 |
| Countries of the German Empire | 0 | - | 4.51 | 38,102 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,943 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,204 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,720 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,874 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,446 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,733 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,385 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,828 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,904 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,845 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,285 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,945 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,612 |
| Africa Map Quiz | 0 | - | 5.00 | 2,125,495 |
| Asia Map Quiz | 0 | - | 4.99 | 922,664 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,254 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,917 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,319 |
| Rivers of the United States | 0 | - | 4.93 | 66,516 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,057 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,894 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,955 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,731 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,076 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,946 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,858 |
| U.S. Senators by State | 0 | - | 4.44 | 40,056 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,661 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,280 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 94,077 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,615 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,125 |
| Cities in U.S. History #1 | 0 | - | 4.31 | 45,496 |
| Africa Capitals Quiz | 0 | - | 4.99 | 741,902 |
| Asia Capitals Quiz | 0 | - | 4.98 | 696,833 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 89,562 |
| US States and State Capitals | 0 | - | 4.99 | 164,511 |
| New York City A-Z | 0 | - | 4.18 | 32,356 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,196 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,575 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,645 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,170 |
| The Only European Country ... | 0 | - | 4.91 | 218,231 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,348 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,092 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,818 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,986 |
| Countries of Africa | 0 | - | 5.00 | 2,551,875 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,527 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,066 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,195 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,658 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,391 |
| Australia Map Quiz | 0 | - | 4.95 | 345,698 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,650 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,339 |
| U.S. State Flags | 0 | - | 4.89 | 172,079 |
| Hawaiian Islands | 0 | - | 4.83 | 42,844 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,134 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,455 |
| African East Coast | 0 | - | 4.96 | 96,517 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,396 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,877 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,099 |
| Flags of Asia Quiz | 0 | - | 4.99 | 617,910 |
| Countries of Europe by Population | 0 | - | 4.98 | 182,273 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,124 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,311 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,971 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,705 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,397 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,070 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,419 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,733 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,587 |
| U.S. Cities A-Z by Clue #1 | 0 | - | 4.36 | 39,894 |
| Cities in European History #1 | 0 | - | 4.63 | 134,423 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,659 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,228 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 75,763 |
| Former Capitals | 0 | - | 4.88 | 71,597 |
| Europe Capital to Country | 0 | - | 4.99 | 251,516 |
| Asia Capital to Country | 0 | - | 4.96 | 127,155 |
| EU Capitals with No Hints | 0 | - | 4.96 | 146,626 |
| European Capitals by Map | 0 | - | 4.99 | 141,324 |
| African Capitals by Map | 0 | - | 4.99 | 141,283 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,798 |
| Asian Capitals by Map | 0 | - | 4.98 | 63,549 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,612 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,966 |
| European Coastal Capitals | 0 | - | 4.95 | 91,069 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,065 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,694 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 225,219 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,047 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 104,427 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,257 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,928 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,136 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 58,179 |
| Countries of the Middle East | 0 | - | 4.96 | 202,198 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,899 |
| Slavic Countries | 0 | - | 4.96 | 112,148 |
| African Island Countries | 0 | - | 4.96 | 102,204 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,062 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,485 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,498 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,531 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,067 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,266 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,011 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,246 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,317 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,850 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,611 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,804 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 117,275 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,041 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,681 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,954 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,938 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,965 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,109 |
| South America Map Quiz | 0 | - | 5.00 | 1,553,831 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,366 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,573 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,607 |
| North America Map Quiz | 0 | - | 4.98 | 250,519 |
