| World's Longest Rivers | 0 | - | 4.89 | 136,224 |
| Countries With No Rivers | 0 | - | 4.96 | 76,715 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,995 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,648 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,278 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,291 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,986 |
| North Sea Countries | 0 | - | 4.92 | 87,317 |
| Black Sea Countries | 0 | - | 4.87 | 60,579 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,327 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,425 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,195 |
| Seas on the World Map | 0 | - | 4.96 | 135,166 |
| Seas of the World | 0 | - | 5.00 | 156,456 |
| Famous Rivers | 0 | - | 4.75 | 104,899 |
| City to River #1 | 0 | - | 4.59 | 35,833 |
| Most Populous River Basins | 0 | - | 4.55 | 39,684 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,315 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,773 |
| Countries with Fjords | 0 | - | 4.94 | 100,800 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,375 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,632 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,616 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,427 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,913 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,362 |
| Biggest City by River | 0 | - | 4.41 | 52,828 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,045 |
| Rivers by City | 0 | - | 4.38 | 31,702 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,010 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,008 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 163,436 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,756 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,331 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,347 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,460 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,675 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,504 |
| Megadiverse Countries | 0 | - | 4.96 | 134,785 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,206 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,993 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,494 |
| Geologic Time Scale | 0 | - | 4.46 | 10,003 |
| Rivers on Borders | 0 | - | 4.02 | 22,687 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,713 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,791 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,217 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,213 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,597 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,008 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,612 |
| Boundary Waters | 0 | - | 4.92 | 88,389 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,098 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,936 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,219 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,360 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,350,063 |
| Landlocked Countries | 0 | - | 4.99 | 419,183 |
| World Capitals Quiz | 0 | - | 5.00 | 5,065,031 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,758,104 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,513 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,648 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,706 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,948 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,183 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,583,376 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,666 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,217 |
| Island Countries | 0 | - | 4.99 | 709,854 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,089 |
| Himalayan Countries | 0 | - | 4.95 | 137,520 |
| Andean Countries | 0 | - | 4.95 | 83,986 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,257 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,732 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,881 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,379 |
| Danube Countries | 0 | - | 4.97 | 71,690 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,599 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,084 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,692 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,765 |
| European Landlocked Countries | 0 | - | 4.99 | 146,800 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,165 |
| Countries with the Most Species | 0 | - | 4.99 | 102,937 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,305 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,436 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,597 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,320 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,004 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,384 |
| Countries in the Alps | 0 | - | 4.87 | 117,724 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,159 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,410 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,434 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,022 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,130 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,729 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,307 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,210 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,980 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,572 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,498 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,349 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,948 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,206 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,229 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,235 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,080 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,583 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,557 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,479 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,275 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,013 |
| Largest Countries By Category | 0 | - | 4.97 | 157,675 |
| Countries by Countries | 0 | - | 4.96 | 62,857 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,244 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,168 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,478 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,591 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,670 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,341 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,291 |
| Northernmost Countries | 0 | - | 4.99 | 360,574 |
| Countries of South America | 0 | - | 5.00 | 923,187 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,535 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,867,035 |
| "Land" Countries | 0 | - | 4.98 | 335,841 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,539 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,396 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,749 |
| Top World Languages | 0 | - | 4.92 | 820,481 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 82,245 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,396 |
| Rivers A-Z | 0 | - | 4.35 | 32,769 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,134 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,087 |
| Longest International Borders | 0 | - | 4.99 | 264,697 |
| Countries with Three Borders | 0 | - | 4.96 | 36,463 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,926 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,028 |
| Demonym of Every Country | 0 | - | 4.91 | 59,171 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,353 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,186 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,095 |
| Countries with Megacities | 0 | - | 4.99 | 261,038 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,950 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,027 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,229 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,045 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,903 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,998 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,261 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,305 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,008 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,692 |
| Countries by Capital City | 0 | - | 5.00 | 67,977 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,999 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,491 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,002 |
| Moved Capital Cities | 0 | - | 4.96 | 74,078 |
| Countries by Official Language | 0 | - | 4.95 | 194,673 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,590 |
| Countries in their Native Language | 0 | - | 4.99 | 198,221 |
| Independence from Whom | 0 | - | 4.99 | 211,370 |
| Subdivisions by Country | 0 | - | 4.86 | 50,295 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,750 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,575 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,195 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,763 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,024 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,729 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,397 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,009 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,855 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,498 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,998 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,035 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,727 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,006 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,792 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,166 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,334 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,209 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,256 |
| World Map Quiz | 0 | - | 4.81 | 64,606 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,701 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,054 |
| Countries by Founding Story | 0 | - | 4.95 | 77,092 |
| Countries by Road Signs | 0 | - | 4.98 | 53,670 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,551 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,953 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,670 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,389 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,541 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,694 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,848 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,278 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,306 |
| Widest Countries East to West | 0 | - | 4.92 | 129,394 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,387 |
