| World's Longest Rivers | 0 | - | 4.90 | 137,460 |
| Countries With No Rivers | 0 | - | 4.96 | 77,071 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,878 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,212 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,782 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,977 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,140 |
| North Sea Countries | 0 | - | 4.92 | 87,640 |
| Black Sea Countries | 0 | - | 4.87 | 60,709 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,538 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,634 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,341 |
| Seas on the World Map | 0 | - | 4.96 | 135,852 |
| Seas of the World | 0 | - | 5.00 | 158,123 |
| Famous Rivers | 0 | - | 4.75 | 105,191 |
| City to River #1 | 0 | - | 4.59 | 35,891 |
| Most Populous River Basins | 0 | - | 4.55 | 39,797 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,444 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,008 |
| Countries with Fjords | 0 | - | 4.94 | 101,241 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,867 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,937 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,856 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,664 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,125 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,728 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,221 |
| Rivers by City | 0 | - | 4.38 | 31,766 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,187 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,075 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 165,119 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,274 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,869 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,608 |
| Biggest City by River | 0 | - | 4.38 | 52,939 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,910 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,854 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,701 |
| Megadiverse Countries | 0 | - | 4.96 | 135,199 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,373 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,066 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,604 |
| Geologic Time Scale | 0 | - | 4.41 | 10,059 |
| Rivers on Borders | 0 | - | 4.02 | 22,730 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 97,059 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,844 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,299 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,282 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,705 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,033 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,825 |
| Boundary Waters | 0 | - | 4.92 | 88,712 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,368 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,571 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,170 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,849 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,784,395 |
| Landlocked Countries | 0 | - | 4.99 | 424,573 |
| World Capitals Quiz | 0 | - | 5.00 | 5,099,321 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,796,521 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,857 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,289 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,812 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,848 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,471 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,596,898 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,321 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,999 |
| Island Countries | 0 | - | 4.99 | 712,098 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,660 |
| Himalayan Countries | 0 | - | 4.94 | 139,789 |
| Andean Countries | 0 | - | 4.94 | 85,192 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,375 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,660 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,939 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,234 |
| Danube Countries | 0 | - | 4.97 | 72,274 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,422 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,711 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,868 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,364 |
| European Landlocked Countries | 0 | - | 4.99 | 147,462 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,096 |
| Countries with the Most Species | 0 | - | 4.99 | 103,489 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,241 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,710 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,823 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,750 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,482 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,908 |
| Countries in the Alps | 0 | - | 4.87 | 118,588 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,329 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,608 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,876 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,896 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,822 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,140 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,252 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,770 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,339 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,070 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,797 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,664 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,454 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,691 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,778 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,533 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,528 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,547 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,498 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,221 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,854 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,431 |
| Largest Countries By Category | 0 | - | 4.97 | 158,667 |
| Countries by Countries | 0 | - | 4.96 | 63,513 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,105 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,362 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,644 |
| All Countries by Population With a Map | 0 | - | 4.98 | 110,580 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,284 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,989 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,333 |
| Northernmost Countries | 0 | - | 4.99 | 363,425 |
| Countries of South America | 0 | - | 5.00 | 930,968 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,355 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,550 |
| "Land" Countries | 0 | - | 4.98 | 338,071 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,274 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,347 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,951 |
| Top World Languages | 0 | - | 4.92 | 828,240 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,718 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,588 |
| Rivers A-Z | 0 | - | 4.35 | 32,843 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,771 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,487 |
| Longest International Borders | 0 | - | 4.99 | 265,635 |
| Countries with Three Borders | 0 | - | 4.96 | 36,725 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,296 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,439 |
| Demonym of Every Country | 0 | - | 4.90 | 61,321 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,687 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,879 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,829 |
| Countries with Megacities | 0 | - | 4.99 | 266,448 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,535 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,926 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,836 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,044 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,093 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,184 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,865 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,059 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,031 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,931 |
| Countries by Capital City | 0 | - | 5.00 | 69,188 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,731 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,102 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,698 |
| Moved Capital Cities | 0 | - | 4.96 | 74,573 |
| Countries by Official Language | 0 | - | 4.95 | 195,781 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,321 |
| Countries in their Native Language | 0 | - | 4.99 | 199,563 |
| Independence from Whom | 0 | - | 4.99 | 212,784 |
| Subdivisions by Country | 0 | - | 4.87 | 50,571 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,241 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,768 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,484 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,386 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,184 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,448 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,768 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,930 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,511 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,782 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,224 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,221 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,315 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,379 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,106 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,517 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,636 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,845 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,048 |
| World Map Quiz | 0 | - | 4.81 | 65,469 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,648 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,591 |
| Countries by Founding Story | 0 | - | 4.95 | 77,685 |
| Countries by Road Signs | 0 | - | 4.98 | 54,261 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,010 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,953 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,439 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,248 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,294 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,417 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,609 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,622 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,183 |
| Widest Countries East to West | 0 | - | 4.92 | 130,331 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,565 |
