| World's Longest Rivers | 0 | - | 4.89 | 137,881 |
| Countries With No Rivers | 0 | - | 4.96 | 77,288 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,201 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,518 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 57,039 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 82,295 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,236 |
| North Sea Countries | 0 | - | 4.92 | 87,821 |
| Black Sea Countries | 0 | - | 4.87 | 60,820 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,681 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,776 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,443 |
| Seas on the World Map | 0 | - | 4.96 | 136,178 |
| Seas of the World | 0 | - | 5.00 | 158,985 |
| Famous Rivers | 0 | - | 4.75 | 105,383 |
| City to River #1 | 0 | - | 4.59 | 35,924 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,532 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,276 |
| Countries with Fjords | 0 | - | 4.94 | 101,657 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,150 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,107 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,963 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,778 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,224 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,928 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,338 |
| Rivers by City | 0 | - | 4.38 | 31,791 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,288 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,107 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 166,058 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,503 |
| Biggest Lakes in the World | 0 | - | 4.63 | 90,014 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,721 |
| Biggest City by River | 0 | - | 4.38 | 52,993 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,507 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,946 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,797 |
| Megadiverse Countries | 0 | - | 4.96 | 149,785 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,452 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,091 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,709 |
| Geologic Time Scale | 0 | - | 4.41 | 10,085 |
| Rivers on Borders | 0 | - | 4.02 | 22,759 |
| Seas that Touch the Most Countries | 0 | - | 4.64 | 97,200 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,866 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,329 |
| Indian Ocean General Knowledge | 0 | - | 4.53 | 22,301 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,751 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,042 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,918 |
| Boundary Waters | 0 | - | 4.92 | 88,872 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,493 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,905 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,643 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 61,106 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,008,608 |
| Landlocked Countries | 0 | - | 4.99 | 427,730 |
| World Capitals Quiz | 0 | - | 5.00 | 5,117,211 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,815,766 |
| World Geography on a Map #1 | 0 | - | 4.94 | 74,019 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,567 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,237 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,265 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,063 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,603,527 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,187 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,654 |
| Island Countries | 0 | - | 4.99 | 713,217 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,140 |
| Himalayan Countries | 0 | - | 4.93 | 141,027 |
| Andean Countries | 0 | - | 4.94 | 85,902 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,018 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,638 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,562 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,766 |
| Danube Countries | 0 | - | 4.97 | 72,610 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,878 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,026 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,538 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,019 |
| European Landlocked Countries | 0 | - | 4.99 | 147,824 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,610 |
| Countries with the Most Species | 0 | - | 4.99 | 103,672 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,716 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,835 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,976 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,963 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,709 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,178 |
| Countries in the Alps | 0 | - | 4.87 | 119,053 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,130 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,259 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,092 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,222 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,193 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,428 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,648 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,036 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,540 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,353 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,982 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,852 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,709 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,964 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,066 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,263 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,770 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,791 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,907 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,577 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,637 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,643 |
| Largest Countries By Category | 0 | - | 4.97 | 159,197 |
| Countries by Countries | 0 | - | 4.97 | 63,857 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,524 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,460 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,719 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,633 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,605 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,291 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,750 |
| Northernmost Countries | 0 | - | 4.99 | 364,846 |
| Countries of South America | 0 | - | 5.00 | 934,952 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,321 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,736 |
| "Land" Countries | 0 | - | 4.98 | 339,178 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,648 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,632 |
| Western Europe Map Quiz | 0 | - | 4.86 | 94,035 |
| Top World Languages | 0 | - | 4.92 | 832,198 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,928 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,671 |
| Rivers A-Z | 0 | - | 4.35 | 32,878 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,546 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,697 |
| Longest International Borders | 0 | - | 4.99 | 266,090 |
| Countries with Three Borders | 0 | - | 4.96 | 36,859 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,450 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,595 |
| Demonym of Every Country | 0 | - | 4.90 | 61,697 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,794 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 105,197 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,662 |
| Countries with Megacities | 0 | - | 4.99 | 268,190 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,303 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,413 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,641 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,532 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,589 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,647 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,142 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,413 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,540 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,505 |
| Countries by Capital City | 0 | - | 5.00 | 69,732 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,245 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,414 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 85,019 |
| Moved Capital Cities | 0 | - | 4.96 | 74,764 |
| Countries by Official Language | 0 | - | 4.95 | 196,335 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,090 |
| Countries in their Native Language | 0 | - | 4.99 | 200,045 |
| Independence from Whom | 0 | - | 4.99 | 213,547 |
| Subdivisions by Country | 0 | - | 4.87 | 50,682 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,759 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,221 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,596 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,853 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,273 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,553 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,962 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,380 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,658 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,216 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,299 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,900 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,521 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,532 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,251 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,675 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,015 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,564 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,902 |
| World Map Quiz | 0 | - | 4.81 | 65,984 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,183 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,865 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,793 |
| Countries by Founding Story | 0 | - | 4.95 | 77,952 |
| Countries by Road Signs | 0 | - | 4.98 | 54,499 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,636 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,294 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,765 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,074 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,618 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,739 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,906 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,788 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,018 |
| Widest Countries East to West | 0 | - | 4.92 | 130,908 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,638 |
