| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,343 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,635 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,666 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,438 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,110 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,407 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,314 |
| US States Quiz | 0 | - | 5.00 | 16,827,085 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,345 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,538 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 93,438 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,503 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,293 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,687 |
| Vietnam War Countries | 0 | - | 4.83 | 94,050 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,119 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,549 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,134 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,312 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,488 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,587 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,766 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 330,955 |
| Pixelated United States Map | 0 | - | 4.87 | 94,053 |
| US States with an Empty Map | 0 | - | 5.00 | 623,129 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,621 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,141 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,180 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,672 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,933 |
| U.S. States By Population | 0 | - | 4.92 | 152,983 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,168 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,303 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,366 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,094 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,444 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,750 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,492 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,032 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,414 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,100 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,996 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,299 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 174,732 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,727 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,641 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,003 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 143,579 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,061 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,140 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,459 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,114 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,142 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,084 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,086 |
| Countries Closest to Maine | 0 | - | 4.85 | 66,959 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,504 |
| Europe Map Quiz | 0 | - | 5.00 | 4,754,674 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,120 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,584 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,212 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,092 |
| Rivers of the United States | 0 | - | 4.93 | 66,062 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,334 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,331 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,682 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,351 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,383 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,854 |
| U.S. Senators by State | 0 | - | 4.45 | 39,900 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,457 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,376 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,817 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,782 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,832 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,800 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,521 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,733 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,220 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,962 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,269 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,346 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,357 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,351 |
| Asia Map Quiz | 0 | - | 4.99 | 914,212 |
| Random U.S. States on a Map | 0 | - | 4.96 | 624,927 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,995 |
| U.S. State Flags | 0 | - | 4.89 | 169,658 |
| Hawaiian Islands | 0 | - | 4.83 | 42,643 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,423 |
| U.S. States that Border Canada | 0 | - | 4.91 | 184,286 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,263 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,733 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,279 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,805 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,239,496 |
| Flags of Asia Quiz | 0 | - | 4.99 | 611,221 |
| Countries of Europe by Population | 0 | - | 4.98 | 180,038 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,335 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 70,753 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,200 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,068 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,047 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,339 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,144 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,421 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,050 |
| Cities in European History #1 | 0 | - | 4.63 | 133,771 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,556 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 110,370 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 74,776 |
| Cities in U.S. History #1 | 0 | - | 4.31 | 45,382 |
| Africa Capitals Quiz | 0 | - | 4.99 | 735,567 |
| Former Capitals | 0 | - | 4.88 | 71,361 |
| Asia Capitals Quiz | 0 | - | 4.98 | 690,806 |
| Europe Capital to Country | 0 | - | 4.99 | 249,490 |
| Asia Capital to Country | 0 | - | 4.96 | 126,428 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,531 |
| European Capitals by Map | 0 | - | 4.99 | 138,469 |
| African Capitals by Map | 0 | - | 4.99 | 133,268 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,297 |
| Asian Capitals by Map | 0 | - | 4.98 | 62,035 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,851 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,206 |
| European Coastal Capitals | 0 | - | 4.95 | 90,349 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,485 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,046 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 223,489 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,721 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 103,816 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,476 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,150 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,883 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,239 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,573 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,785 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,104 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 57,892 |
| Countries of the Middle East | 0 | - | 4.96 | 200,692 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,972 |
| The Only European Country ... | 0 | - | 4.91 | 215,920 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,677 |
| Slavic Countries | 0 | - | 4.96 | 111,467 |
| African Island Countries | 0 | - | 4.96 | 101,396 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,723 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,012 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,567 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,780 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,532 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,004 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,219 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,328 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 118,816 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,902 |
| Countries of Africa | 0 | - | 5.00 | 2,529,186 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,213 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,622 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,242 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,122 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,611 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,397 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,497 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,504 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,067 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,945 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,365 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,971 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,949 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,784 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,047 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,041 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,380,670 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,425 |
| South America Map Quiz | 0 | - | 5.00 | 1,547,070 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,253 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,958 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,435 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,698 |
| North America Map Quiz | 0 | - | 4.98 | 247,562 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,594 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,593 |
| Australia Map Quiz | 0 | - | 4.95 | 343,778 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,888 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,859 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,064 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,962 |
| Flags of Africa Quiz | 0 | - | 5.00 | 469,020 |
| Flags of North and South America | 0 | - | 4.99 | 371,755 |
| Australian States and Territories | 0 | - | 4.96 | 141,665 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,130 |
| Territories of the United States | 0 | - | 4.79 | 52,321 |
| Counties of England | 0 | - | 4.97 | 794,559 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,483 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,865 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,228 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,568 |
| African East Coast | 0 | - | 4.96 | 95,784 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,230 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,606 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,928 |
