| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,232 |
| North Sea Countries | 0 | - | 4.92 | 87,810 |
| Black Sea Countries | 0 | - | 4.87 | 60,813 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,674 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,770 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,333 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,915 |
| Countries With No Rivers | 0 | - | 4.96 | 77,278 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,436 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,189 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,640 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,135 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,098 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,920 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,273 |
| Countries with Fjords | 0 | - | 4.94 | 101,643 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,496 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,489 |
| Seas on the World Map | 0 | - | 4.96 | 136,169 |
| Seas of the World | 0 | - | 5.00 | 158,957 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,795 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,240 |
| African Great Lakes | 0 | - | 4.82 | 67,165 |
| Seas of Europe | 0 | - | 4.37 | 84,976 |
| Independence from Whom | 0 | - | 4.99 | 213,513 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,742 |
| Megadiverse Countries | 0 | - | 4.96 | 149,692 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,949 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,368 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,679 |
| Countries by Founding Story | 0 | - | 4.95 | 77,939 |
| Rivers and Lakes whose Names are Countries | 0 | - | 4.95 | 45,840 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,086 |
| Nile River Basin Countries on a Map | 0 | - | 4.95 | 51,042 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,249 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,708 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 61,016 |
| 10 Longest Rivers in the United States | 0 | - | 4.86 | 39,472 |
| Biggest City by River | 0 | - | 4.38 | 52,991 |
| Cities by Former Name | 0 | - | 4.83 | 92,218 |
| Recently Independent Countries | 0 | - | 4.98 | 160,569 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,804 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,928 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,846 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,258 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 197,193 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,590 |
| Countries by Former Name | 0 | - | 4.99 | 126,022 |
| Historical City to Country | 0 | - | 4.85 | 79,115 |
| African Physical Geography | 0 | - | 4.51 | 31,847 |
| Asian Physical Geography | 0 | - | 4.61 | 35,647 |
| Rivers of the United States | 0 | - | 4.93 | 66,825 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,215 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,944 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,838 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,886 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 58,012 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,798 |
| Former Flags | 0 | - | 4.97 | 108,872 |
| World's Longest Rivers | 0 | - | 4.89 | 137,853 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,864 |
| Landforms by Country | 0 | - | 4.52 | 52,033 |
| Capitals by River | 0 | - | 4.55 | 48,410 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,640 |
| Battle to Country | 0 | - | 4.91 | 54,151 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,330 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,297 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,778 |
| Geological Extremes | 0 | - | 4.34 | 40,128 |
| European Physical Geography | 0 | - | 4.26 | 33,621 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,503 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 57,032 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,625 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,207 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,074 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,065 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,953 |
| Ancient City to Country | 0 | - | 4.72 | 108,416 |
| City-States | 0 | - | 4.53 | 37,444 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,866 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,363 |
| Countries by Independence Day | 0 | - | 4.62 | 52,887 |
| Former Countries by Capital | 0 | - | 4.45 | 127,913 |
| Former Countries | 0 | - | 4.77 | 134,344 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,217 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,750 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,108 |
| Boundary Waters | 0 | - | 4.92 | 88,870 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,482 |
| WWII Geography | 0 | - | 4.81 | 121,543 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,887 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,627 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 61,096 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 71,117 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,295 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,999,994 |
| Countries in World War I | 0 | - | 4.88 | 229,515 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,831 |
| Countries with the Most Wild Elephants | 0 | - | 4.64 | 55,247 |
| Animal Populations of Countries | 0 | - | 4.52 | 44,131 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,828 |
| Top 15 Countries with the Most Cows | 0 | - | 4.72 | 107,553 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,747 |
| South American Physical Geography | 0 | - | 4.58 | 18,415 |
| Roman Provinces on a Map | 0 | - | 4.53 | 37,423 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,177 |
| City Where It Happened #1 | 0 | - | 4.23 | 106,802 |
| World Capitals Quiz | 0 | - | 5.00 | 5,116,484 |
| Landlocked Countries | 0 | - | 4.99 | 427,622 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,980 |
| Guerrillas by Country | 0 | - | 4.40 | 41,259 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,309 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,974 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,690 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 592,986 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.77 | 45,925 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.78 | 33,783 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,815,066 |
| Countries with More Cows than People | 0 | - | 4.46 | 61,769 |
| Biggest Lakes in the World | 0 | - | 4.63 | 90,011 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,719 |
| Famous Rivers | 0 | - | 4.75 | 105,344 |
| City to River #1 | 0 | - | 4.59 | 35,923 |
| Rivers A-Z | 0 | - | 4.35 | 32,878 |
| Most Populous River Basins | 0 | - | 4.55 | 39,844 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,530 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,517 |
| Sea in the Answers | 0 | - | 4.08 | 49,219 |
| Famous Immigrants and Exiles | 0 | - | 4.46 | 23,794 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,845 |
| People Born on Islands | 0 | - | 4.39 | 53,097 |
| World Geography on a Map #1 | 0 | - | 4.94 | 74,015 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,555 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,227 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,244 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,955 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,603,240 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,143 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,588 |
| Island Countries | 0 | - | 4.99 | 713,156 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,099 |
| Himalayan Countries | 0 | - | 4.93 | 140,981 |
| Andean Countries | 0 | - | 4.94 | 85,884 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,991 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,605 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,536 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,745 |
| Danube Countries | 0 | - | 4.97 | 72,602 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,861 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,008 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,516 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,987 |
| European Landlocked Countries | 0 | - | 4.99 | 147,811 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,593 |
| Countries with the Most Species | 0 | - | 4.99 | 103,667 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,695 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,827 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,968 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,949 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,702 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,166 |
| Countries in the Alps | 0 | - | 4.87 | 119,035 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,102 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,240 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,089 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,212 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,179 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,419 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,633 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,030 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,532 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,346 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,973 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,849 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,700 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,954 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,056 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,231 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,765 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,728 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,884 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,518 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,611 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,636 |
| Largest Countries By Category | 0 | - | 4.97 | 159,156 |
| Countries by Countries | 0 | - | 4.97 | 63,844 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,234 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,510 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,457 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,716 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,601 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,595 |
| Communist Countries in History | 0 | - | 4.63 | 498,895 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,653 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,274 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,630 |
| Northernmost Countries | 0 | - | 4.99 | 364,788 |
| Inventions by Country #1 | 0 | - | 4.47 | 55,212 |
| Countries of South America | 0 | - | 5.00 | 934,800 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,132 |
