| Capital Cities by Body of Water | 0 | - | 4.85 | 57,804 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,126 |
| North Sea Countries | 0 | - | 4.92 | 87,616 |
| Black Sea Countries | 0 | - | 4.87 | 60,703 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,517 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,622 |
| Countries With No Rivers | 0 | - | 4.96 | 77,051 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,336 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,724 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,985 |
| Countries with Fjords | 0 | - | 4.94 | 101,201 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,827 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,916 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,689 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,204 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,212 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,242 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,802 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,676 |
| Independence from Whom | 0 | - | 4.99 | 212,641 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,136 |
| Megadiverse Countries | 0 | - | 4.96 | 135,164 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,714 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,812 |
| Countries by Founding Story | 0 | - | 4.95 | 77,608 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,165 |
| African Great Lakes | 0 | - | 4.82 | 66,786 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,019 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,592 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,544 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,776 |
| Nile River Basin Countries on a Map | 0 | - | 4.95 | 50,857 |
| Biggest City by River | 0 | - | 4.38 | 52,927 |
| Cities by Former Name | 0 | - | 4.83 | 91,909 |
| Recently Independent Countries | 0 | - | 4.98 | 159,742 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,132 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,428 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.88 | 87,440 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,644 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,312 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,785 |
| Countries by Former Name | 0 | - | 4.99 | 125,605 |
| Historical City to Country | 0 | - | 4.85 | 78,778 |
| African Physical Geography | 0 | - | 4.51 | 31,783 |
| Asian Physical Geography | 0 | - | 4.61 | 35,595 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,896 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,330 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,841 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,924 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,624 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,345 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,612 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,756 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,516 |
| Former Flags | 0 | - | 4.97 | 108,301 |
| World's Longest Rivers | 0 | - | 4.90 | 137,391 |
| Rivers of the United States | 0 | - | 4.93 | 66,537 |
| Seas of Europe | 0 | - | 4.37 | 84,833 |
| Landforms by Country | 0 | - | 4.52 | 52,006 |
| Ancient City to Country | 0 | - | 4.70 | 108,252 |
| City-States | 0 | - | 4.53 | 37,365 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,771 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,189 |
| Capitals by River | 0 | - | 4.55 | 48,367 |
| Countries by Independence Day | 0 | - | 4.62 | 52,834 |
| Former Countries by Capital | 0 | - | 4.45 | 127,727 |
| Former Countries | 0 | - | 4.77 | 134,081 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,327 |
| Battle to Country | 0 | - | 4.91 | 53,756 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,079 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,991 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,441 |
| Geological Extremes | 0 | - | 4.34 | 40,091 |
| European Physical Geography | 0 | - | 4.26 | 33,572 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,159 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,731 |
| Seas on the World Map | 0 | - | 4.96 | 135,794 |
| Seas of the World | 0 | - | 5.00 | 157,918 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,076 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,615 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,835 |
| Boundary Waters | 0 | - | 4.92 | 88,685 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,345 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,504 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,090 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,809 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,810 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,330 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,460 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,233 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,748,618 |
| Landlocked Countries | 0 | - | 4.99 | 424,054 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 55,103 |
| Animal Populations of Countries | 0 | - | 4.52 | 44,002 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 584,037 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,513 |
| Top 15 Countries with the Most Cows | 0 | - | 4.74 | 107,425 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,108 |
| Roman Provinces on a Map | 0 | - | 4.53 | 37,234 |
| WWII Geography | 0 | - | 4.81 | 120,791 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,145 |
| City Where It Happened #1 | 0 | - | 4.23 | 106,446 |
| World Capitals Quiz | 0 | - | 5.00 | 5,096,210 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,923 |
| Guerrillas by Country | 0 | - | 4.40 | 41,200 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,259 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,837 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,793,439 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,714 |
| South American Physical Geography | 0 | - | 4.58 | 18,386 |
| Famous Immigrants and Exiles | 0 | - | 4.46 | 23,654 |
| People Born on Islands | 0 | - | 4.39 | 53,018 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,827 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,238 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,741 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,759 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,429 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,595,785 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,171 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,674 |
| Island Countries | 0 | - | 4.99 | 711,866 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,436 |
| Himalayan Countries | 0 | - | 4.94 | 139,608 |
| Andean Countries | 0 | - | 4.94 | 85,097 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,289 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,519 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,854 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,150 |
| Countries in World War I | 0 | - | 4.88 | 228,816 |
| Danube Countries | 0 | - | 4.97 | 72,231 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,345 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,654 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,756 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,254 |
| European Landlocked Countries | 0 | - | 4.99 | 147,405 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,012 |
| Countries with the Most Species | 0 | - | 4.99 | 103,438 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,788 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,134 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,691 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,802 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,714 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,445 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,862 |
| Countries in the Alps | 0 | - | 4.87 | 118,511 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,147 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,493 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,825 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,830 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,760 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,106 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,948 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,693 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,315 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,029 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,770 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,638 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,403 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,646 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,739 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,411 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,485 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,347 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,418 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,003 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,718 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,395 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,644 |
| Largest Countries By Category | 0 | - | 4.97 | 158,575 |
| Countries by Countries | 0 | - | 4.96 | 63,457 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,033 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,355 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,629 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.77 | 45,743 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.78 | 33,593 |
| All Countries by Population With a Map | 0 | - | 4.99 | 110,346 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,221 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,927 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,723 |
| Northernmost Countries | 0 | - | 4.99 | 363,199 |
| Countries of South America | 0 | - | 5.00 | 930,227 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,589 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,034 |
| "Land" Countries | 0 | - | 4.98 | 337,938 |
| Countries with More Cows than People | 0 | - | 4.46 | 61,572 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,289 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,936 |
| Top World Languages | 0 | - | 4.92 | 827,508 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,677 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,579 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,838 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,572 |
| Famous Rivers | 0 | - | 4.75 | 105,178 |
| City to River #1 | 0 | - | 4.59 | 35,884 |
| Rivers A-Z | 0 | - | 4.35 | 32,836 |
| Most Populous River Basins | 0 | - | 4.55 | 39,781 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,431 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,403 |
| Sea in the Answers | 0 | - | 4.08 | 49,105 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,623 |
