| World's Longest Rivers | 0 | - | 4.89 | 137,909 |
| Countries With No Rivers | 0 | - | 4.96 | 77,301 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,227 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,540 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 57,052 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 82,307 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,241 |
| North Sea Countries | 0 | - | 4.92 | 87,839 |
| Black Sea Countries | 0 | - | 4.87 | 60,825 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,691 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,790 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,449 |
| Seas on the World Map | 0 | - | 4.96 | 136,205 |
| Seas of the World | 0 | - | 5.00 | 159,031 |
| Famous Rivers | 0 | - | 4.75 | 105,570 |
| City to River #1 | 0 | - | 4.59 | 35,928 |
| Most Populous River Basins | 0 | - | 4.55 | 39,845 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,289 |
| Countries with Fjords | 0 | - | 4.94 | 101,671 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,170 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,124 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,971 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,782 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,237 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,947 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,347 |
| Rivers by City | 0 | - | 4.38 | 31,792 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,294 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,109 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 166,118 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,513 |
| Biggest Lakes in the World | 0 | - | 4.63 | 90,020 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,732 |
| Biggest City by River | 0 | - | 4.38 | 52,996 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,557 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,952 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,802 |
| Megadiverse Countries | 0 | - | 4.96 | 149,906 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,459 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,091 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,712 |
| Geologic Time Scale | 0 | - | 4.41 | 10,088 |
| Rivers on Borders | 0 | - | 4.02 | 22,760 |
| Seas that Touch the Most Countries | 0 | - | 4.64 | 97,206 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,866 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,331 |
| Indian Ocean General Knowledge | 0 | - | 4.53 | 22,303 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,754 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,043 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,923 |
| Boundary Waters | 0 | - | 4.92 | 88,878 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,494 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,924 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,661 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 61,122 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,022,437 |
| Landlocked Countries | 0 | - | 4.99 | 427,905 |
| World Capitals Quiz | 0 | - | 5.00 | 5,118,416 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,817,042 |
| World Geography on a Map #1 | 0 | - | 4.94 | 74,030 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,595 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,260 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,291 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,210 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,603,996 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,236 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,761 |
| Island Countries | 0 | - | 4.99 | 713,313 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,208 |
| Himalayan Countries | 0 | - | 4.93 | 141,091 |
| Andean Countries | 0 | - | 4.94 | 85,943 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,044 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,690 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,590 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,786 |
| Danube Countries | 0 | - | 4.97 | 72,629 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,900 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,038 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,585 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,060 |
| European Landlocked Countries | 0 | - | 4.99 | 147,843 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,639 |
| Countries with the Most Species | 0 | - | 4.99 | 103,685 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,746 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,840 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,985 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,972 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,722 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,205 |
| Countries in the Alps | 0 | - | 4.87 | 119,077 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,175 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,287 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,105 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,236 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,214 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,437 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,662 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,051 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,551 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,366 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,988 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,860 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,723 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,981 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,082 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,311 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,775 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,897 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,938 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,659 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,748 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,656 |
| Largest Countries By Category | 0 | - | 4.97 | 159,217 |
| Countries by Countries | 0 | - | 4.97 | 63,873 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,555 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,465 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,727 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,695 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,619 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,313 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,965 |
| Northernmost Countries | 0 | - | 4.99 | 364,932 |
| Countries of South America | 0 | - | 5.00 | 935,196 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,764 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,895,327 |
| "Land" Countries | 0 | - | 4.98 | 339,222 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,671 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,656 |
| Western Europe Map Quiz | 0 | - | 4.86 | 94,038 |
| Top World Languages | 0 | - | 4.92 | 832,415 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,941 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,677 |
| Rivers A-Z | 0 | - | 4.35 | 32,878 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,592 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,707 |
| Longest International Borders | 0 | - | 4.99 | 266,117 |
| Countries with Three Borders | 0 | - | 4.96 | 36,867 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,466 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,599 |
| Demonym of Every Country | 0 | - | 4.90 | 61,721 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,799 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 105,219 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,720 |
| Countries with Megacities | 0 | - | 4.99 | 268,296 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,348 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,446 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,698 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,558 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,656 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,692 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,172 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,452 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,613 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,557 |
| Countries by Capital City | 0 | - | 5.00 | 69,787 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,269 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,443 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 85,053 |
| Moved Capital Cities | 0 | - | 4.96 | 74,779 |
| Countries by Official Language | 0 | - | 4.95 | 196,364 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,136 |
| Countries in their Native Language | 0 | - | 4.99 | 200,077 |
| Independence from Whom | 0 | - | 4.99 | 213,595 |
| Subdivisions by Country | 0 | - | 4.87 | 50,689 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,790 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,242 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,608 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,874 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,277 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,581 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,970 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,398 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,665 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,226 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,304 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,938 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,534 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,543 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,259 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,686 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,023 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,399,064 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,943 |
| World Map Quiz | 0 | - | 4.81 | 66,008 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,284 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,882 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,823 |
| Countries by Founding Story | 0 | - | 4.95 | 77,962 |
| Countries by Road Signs | 0 | - | 4.98 | 54,509 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,675 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,315 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,793 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,116 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,637 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,757 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,917 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,794 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,036 |
| Widest Countries East to West | 0 | - | 4.92 | 130,923 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,641 |
