| World's Longest Rivers | 0 | - | 4.90 | 137,543 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 165,319 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 82,052 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,157 |
| North Sea Countries | 0 | - | 4.92 | 87,674 |
| Black Sea Countries | 0 | - | 4.87 | 60,728 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,567 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,663 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,362 |
| Seas on the World Map | 0 | - | 4.96 | 135,922 |
| Seas of the World | 0 | - | 5.00 | 158,292 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,026 |
| Countries with Fjords | 0 | - | 4.94 | 101,290 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,886 |
| Layers of the Earth and Atmosphere | 0 | - | 4.97 | 50,687 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 97,093 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,906 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,643 |
| Famous Rivers | 0 | - | 4.75 | 105,215 |
| City to River #1 | 0 | - | 4.59 | 35,898 |
| Most Populous River Basins | 0 | - | 4.55 | 39,809 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,469 |
| Countries With No Rivers | 0 | - | 4.96 | 77,103 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,969 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,864 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,305 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,286 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,722 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,288 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,820 |
| Megadiverse Countries | 0 | - | 4.96 | 135,249 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,928 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,979 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,390 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,071 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,145 |
| Rivers by City | 0 | - | 4.38 | 31,771 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,207 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,081 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,776 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,621 |
| Geologic Time Scale | 0 | - | 4.41 | 10,064 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,241 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,847 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,331 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,034 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,714 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,034 |
| Boundary Waters | 0 | - | 4.92 | 88,743 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,397 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,649 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,275 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,924 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,841,497 |
| Biggest City by River | 0 | - | 4.38 | 52,952 |
| Landlocked Countries | 0 | - | 4.99 | 425,166 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,902 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,364 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,911 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,938 |
| World Capitals Quiz | 0 | - | 5.00 | 5,103,218 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,977 |
| Himalayan Countries | 0 | - | 4.93 | 140,012 |
| Andean Countries | 0 | - | 4.94 | 85,312 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,469 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,829 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,038 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,330 |
| Danube Countries | 0 | - | 4.97 | 72,321 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,496 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,768 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,992 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,495 |
| European Landlocked Countries | 0 | - | 4.99 | 147,542 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,204 |
| Countries with the Most Species | 0 | - | 4.99 | 103,523 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,330 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,747 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,854 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,793 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,528 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,963 |
| Countries in the Alps | 0 | - | 4.87 | 118,690 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,492 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,760 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,923 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,971 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,887 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,196 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,332 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,813 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,381 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,128 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,826 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,699 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,506 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,737 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,834 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,704 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,565 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,709 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,601 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,483 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,016 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,477 |
| Largest Countries By Category | 0 | - | 4.97 | 158,781 |
| Countries by Countries | 0 | - | 4.96 | 63,584 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,192 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,381 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,654 |
| All Countries by Population With a Map | 0 | - | 4.98 | 110,825 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,377 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,053 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,801,104 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,420 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,968 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,759 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,607 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,968 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,535 |
| Longest International Borders | 0 | - | 4.99 | 265,761 |
| Countries with Three Borders | 0 | - | 4.96 | 36,748 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,331 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,472 |
| Demonym of Every Country | 0 | - | 4.90 | 61,419 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,016 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,598,462 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,528 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,417 |
| Island Countries | 0 | - | 4.99 | 712,358 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,174 |
| Northernmost Countries | 0 | - | 4.99 | 363,750 |
| Countries of South America | 0 | - | 5.00 | 931,908 |
| Countries of Oceania | 0 | - | 5.00 | 1,062,439 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,887,630 |
| "Land" Countries | 0 | - | 4.98 | 338,282 |
| Top World Languages | 0 | - | 4.92 | 829,155 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,392,486 |
| Europe Map Quiz | 0 | - | 5.00 | 4,785,774 |
| All Country Flags of the World | 0 | - | 5.00 | 3,709,341 |
| Rivers on Borders | 0 | - | 4.02 | 22,735 |
| Rivers A-Z | 0 | - | 4.35 | 32,848 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,717 |
| Pacific Ocean General Knowledge | 0 | - | 4.70 | 36,387 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,948 |
| The Same Prefixes - Geography | 0 | - | 4.48 | 47,995 |
| "Second Best" Geography Edition #1 | 0 | - | 4.56 | 63,652 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,453,387 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,304 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,008 |
| Countries with Megacities | 0 | - | 4.99 | 266,843 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,729 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,036 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,042 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,162 |
| Biggest Cities in the World | 0 | - | 4.91 | 805,055 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,212 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,281 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,939 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,166 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,160 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,064 |
| Countries by Capital City | 0 | - | 5.00 | 69,294 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,811 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,181 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,652 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,765 |
| Moved Capital Cities | 0 | - | 4.96 | 74,614 |
| Countries by Official Language | 0 | - | 4.95 | 195,904 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,503 |
| Countries in their Native Language | 0 | - | 4.99 | 199,657 |
| Independence from Whom | 0 | - | 4.99 | 212,957 |
| Subdivisions by Country | 0 | - | 4.87 | 50,591 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,362 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,869 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,513 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,429 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,212 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,538 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,816 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,047 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,546 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,806 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,243 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,430 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,351 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,415 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,128 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,559 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,671 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,218 |
| World Map Quiz | 0 | - | 4.81 | 65,607 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,003 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,665 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,530 |
| Countries by Founding Story | 0 | - | 4.95 | 77,764 |
| Countries by Road Signs | 0 | - | 4.98 | 54,310 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,151 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,004 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,497 |
