| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,811 |
| North Sea Countries | 0 | - | 4.92 | 86,745 |
| Black Sea Countries | 0 | - | 4.87 | 60,404 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,123 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,215 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,862 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,403 |
| Countries With No Rivers | 0 | - | 4.96 | 76,182 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,014 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,462 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,094 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,985 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,395 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,105 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,478 |
| Countries with Fjords | 0 | - | 4.93 | 100,420 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,455 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,812 |
| Seas on the World Map | 0 | - | 4.96 | 134,664 |
| Seas of the World | 0 | - | 5.00 | 155,296 |
| Biggest City by River | 0 | - | 4.41 | 52,743 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,398 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 35,972 |
| African Great Lakes | 0 | - | 4.82 | 65,646 |
| Seas of Europe | 0 | - | 4.37 | 84,462 |
| Independence from Whom | 0 | - | 4.99 | 210,443 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,253 |
| Megadiverse Countries | 0 | - | 4.96 | 134,512 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,187 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,506 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,181 |
| Countries by Founding Story | 0 | - | 4.95 | 76,830 |
| Rivers and Lakes whose Names are Countries | 0 | - | 4.95 | 45,267 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,088 |
| Nile River Basin Countries on a Map | 0 | - | 4.95 | 50,400 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,398 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,378 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,569 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,925 |
| Cities by Former Name | 0 | - | 4.84 | 91,222 |
| Recently Independent Countries | 0 | - | 4.98 | 158,324 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,989 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,608 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,672 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,076 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,014 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,713 |
| Countries by Former Name | 0 | - | 4.99 | 124,634 |
| Historical City to Country | 0 | - | 4.84 | 78,300 |
| Asian Physical Geography | 0 | - | 4.61 | 35,426 |
| Rivers of the United States | 0 | - | 4.93 | 65,775 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,063 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,353 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,141 |
| Countries of the World in 1444 | 0 | - | 4.98 | 59,852 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,099 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,712 |
| Former Flags | 0 | - | 4.97 | 107,112 |
| World's Longest Rivers | 0 | - | 4.88 | 121,761 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,756 |
| Landforms by Country | 0 | - | 4.52 | 51,936 |
| Capitals by River | 0 | - | 4.55 | 48,262 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,385 |
| Battle to Country | 0 | - | 4.91 | 52,868 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,430 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,825 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,416 |
| Geological Extremes | 0 | - | 4.34 | 39,973 |
| African Physical Geography | 0 | - | 4.51 | 31,607 |
| European Physical Geography | 0 | - | 4.26 | 33,415 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,129 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,837 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,477 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,805 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,447 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,583 |
| Ancient City to Country | 0 | - | 4.70 | 107,773 |
| City-States | 0 | - | 4.53 | 37,168 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,572 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,025 |
| Countries by Independence Day | 0 | - | 4.61 | 52,667 |
| Former Countries by Capital | 0 | - | 4.45 | 127,226 |
| Former Countries | 0 | - | 4.75 | 132,937 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,764 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,266 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,776 |
| Boundary Waters | 0 | - | 4.92 | 88,203 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,943 |
| WWII Geography | 0 | - | 4.81 | 119,814 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,611 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,754 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 60,086 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 69,995 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,071 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,131,775 |
| Countries in World War I | 0 | - | 4.88 | 227,347 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,166 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,757 |
| Animal Populations of Countries | 0 | - | 4.51 | 43,716 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 42,904 |
| Top 15 Countries with the Most Cows | 0 | - | 4.64 | 92,846 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,649 |
| South American Physical Geography | 0 | - | 4.58 | 18,301 |
| Roman Provinces on a Map | 0 | - | 4.54 | 36,725 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,058 |
| City Where It Happened #1 | 0 | - | 4.24 | 106,211 |
| World Capitals Quiz | 0 | - | 5.00 | 5,047,865 |
| Landlocked Countries | 0 | - | 4.99 | 416,247 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,716 |
| Guerrillas by Country | 0 | - | 4.40 | 41,024 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,136 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,513 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,531 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 560,761 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.74 | 45,294 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.77 | 33,155 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,737,749 |
| Countries with More Cows than People | 0 | - | 4.45 | 60,900 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,144 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,223 |
| Famous Rivers | 0 | - | 4.74 | 104,669 |
| City to River #1 | 0 | - | 4.59 | 35,777 |
| Rivers A-Z | 0 | - | 4.35 | 32,734 |
| Most Populous River Basins | 0 | - | 4.55 | 39,593 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,198 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,095 |
| Sea in the Answers | 0 | - | 4.10 | 48,677 |
| Famous Immigrants and Exiles | 0 | - | 4.45 | 23,076 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,167 |
| People Born on Islands | 0 | - | 4.39 | 52,816 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,341 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,295 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,231 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,488 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,520 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,576,897 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,652 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,479 |
| Island Countries | 0 | - | 4.99 | 708,680 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,741 |
| Himalayan Countries | 0 | - | 4.95 | 136,338 |
| Andean Countries | 0 | - | 4.95 | 83,393 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,656 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,886 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,351 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,958 |
| Danube Countries | 0 | - | 4.97 | 71,355 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,150 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,814 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,074 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,021 |
| European Landlocked Countries | 0 | - | 4.99 | 146,080 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,697 |
| Countries with the Most Species | 0 | - | 4.99 | 99,961 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,841 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,312 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,486 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,130 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,782 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,155 |
| Countries in the Alps | 0 | - | 4.86 | 117,282 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,866 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,804 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,226 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,697 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,759 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,218 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,943 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,967 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,767 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,299 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,337 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,188 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,690 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,959 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,971 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,634 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,867 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,401 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,155 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,770 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,468 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,790 |
| Largest Countries By Category | 0 | - | 4.97 | 157,204 |
| Countries by Countries | 0 | - | 4.96 | 62,558 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,475 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,818 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,068 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,403 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,588 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,363 |
| Communist Countries in History | 0 | - | 4.63 | 493,729 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,118 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,047 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,870 |
| Northernmost Countries | 0 | - | 4.99 | 359,166 |
| Inventions by Country #1 | 0 | - | 4.46 | 54,932 |
| Countries of South America | 0 | - | 5.00 | 919,137 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,967 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,360 |
