| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,239 |
| North Sea Countries | 0 | - | 4.92 | 87,830 |
| Black Sea Countries | 0 | - | 4.87 | 60,824 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,688 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,785 |
| Seas on the World Map | 0 | - | 4.96 | 136,192 |
| Seas of the World | 0 | - | 5.00 | 159,011 |
| World's Longest Rivers | 0 | - | 4.89 | 137,902 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 166,101 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 82,300 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,448 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,284 |
| Countries with Fjords | 0 | - | 4.94 | 101,667 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,968 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,782 |
| Biggest Lakes in the World | 0 | - | 4.63 | 90,018 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,727 |
| Famous Rivers | 0 | - | 4.75 | 105,504 |
| City to River #1 | 0 | - | 4.59 | 35,926 |
| Most Populous River Basins | 0 | - | 4.55 | 39,844 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,533 |
| Countries With No Rivers | 0 | - | 4.96 | 77,296 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,219 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,330 |
| Indian Ocean General Knowledge | 0 | - | 4.53 | 22,303 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,753 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,532 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 57,047 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,951 |
| Megadiverse Countries | 0 | - | 4.96 | 149,858 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,163 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,120 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,227 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,939 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,455 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,091 |
| Rivers by City | 0 | - | 4.38 | 31,791 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,292 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,109 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,710 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,345 |
| Geologic Time Scale | 0 | - | 4.41 | 10,088 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,510 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,866 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,544 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,800 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,042 |
| Boundary Waters | 0 | - | 4.92 | 88,877 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,493 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,920 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,656 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 61,117 |
| Biggest City by River | 0 | - | 4.38 | 52,995 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,017,347 |
| Landlocked Countries | 0 | - | 4.99 | 427,844 |
| World Capitals Quiz | 0 | - | 5.00 | 5,118,020 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,816,605 |
| World Geography on a Map #1 | 0 | - | 4.94 | 74,027 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,585 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,250 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,286 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,165 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,603,851 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,218 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,730 |
| Island Countries | 0 | - | 4.99 | 713,283 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,191 |
| Himalayan Countries | 0 | - | 4.93 | 141,073 |
| Andean Countries | 0 | - | 4.94 | 85,930 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,032 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,675 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,582 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,781 |
| Danube Countries | 0 | - | 4.97 | 72,625 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,895 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,034 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,562 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,041 |
| European Landlocked Countries | 0 | - | 4.99 | 147,837 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,630 |
| Countries with the Most Species | 0 | - | 4.99 | 103,682 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,737 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,838 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,982 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,969 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,719 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,188 |
| Countries in the Alps | 0 | - | 4.87 | 119,072 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,158 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,274 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,101 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,232 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,206 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,436 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,653 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,048 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,546 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,360 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,987 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,858 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,720 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,973 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,073 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,298 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,773 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,859 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,930 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,621 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,711 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,650 |
| Largest Countries By Category | 0 | - | 4.97 | 159,213 |
| Countries by Countries | 0 | - | 4.97 | 63,869 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,552 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,465 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,724 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,677 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,614 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,307 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,895 |
| Northernmost Countries | 0 | - | 4.99 | 364,902 |
| Countries of South America | 0 | - | 5.00 | 935,102 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,619 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,895,148 |
| "Land" Countries | 0 | - | 4.98 | 339,211 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,650 |
| Western Europe Map Quiz | 0 | - | 4.86 | 94,036 |
| Top World Languages | 0 | - | 4.92 | 832,324 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,936 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,675 |
| Rivers on Borders | 0 | - | 4.02 | 22,760 |
| Rivers A-Z | 0 | - | 4.35 | 32,878 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,577 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,702 |
| Longest International Borders | 0 | - | 4.99 | 266,105 |
| Countries with Three Borders | 0 | - | 4.96 | 36,866 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,459 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,598 |
| Demonym of Every Country | 0 | - | 4.90 | 61,711 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,798 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 105,210 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,701 |
| Countries with Megacities | 0 | - | 4.99 | 268,256 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,334 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,431 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,681 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,555 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,653 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,684 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,159 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,436 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,586 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,535 |
| Countries by Capital City | 0 | - | 5.00 | 69,767 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,261 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,432 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 85,036 |
| Moved Capital Cities | 0 | - | 4.96 | 74,774 |
| Countries by Official Language | 0 | - | 4.95 | 196,358 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,119 |
| Countries in their Native Language | 0 | - | 4.99 | 200,067 |
| Independence from Whom | 0 | - | 4.99 | 213,581 |
| Subdivisions by Country | 0 | - | 4.87 | 50,686 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,782 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,233 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,598 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,870 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,275 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,571 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,970 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,391 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,665 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,223 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,303 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,930 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,531 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,540 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,255 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,682 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,018 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,892 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,933 |
| World Map Quiz | 0 | - | 4.81 | 65,996 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,242 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,875 |
| Countries by Founding Story | 0 | - | 4.95 | 77,961 |
| Countries by Road Signs | 0 | - | 4.98 | 54,506 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,660 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,307 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,782 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,094 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,630 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,747 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,914 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,793 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,028 |
| Widest Countries East to West | 0 | - | 4.92 | 130,917 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,640 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,486 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,591 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,211 |
