| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,230 |
| North Sea Countries | 0 | - | 4.92 | 87,800 |
| Black Sea Countries | 0 | - | 4.87 | 60,812 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,671 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,761 |
| Seas on the World Map | 0 | - | 4.96 | 136,152 |
| Seas of the World | 0 | - | 5.00 | 158,920 |
| World's Longest Rivers | 0 | - | 4.89 | 137,834 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 165,971 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,433 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 82,278 |
| Seas that Touch the Most Countries | 0 | - | 4.64 | 97,188 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,270 |
| Countries with Fjords | 0 | - | 4.94 | 101,633 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,958 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,771 |
| Countries With No Rivers | 0 | - | 4.96 | 77,276 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,176 |
| Biggest Lakes in the World | 0 | - | 4.63 | 90,003 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,713 |
| Famous Rivers | 0 | - | 4.75 | 105,336 |
| City to River #1 | 0 | - | 4.59 | 35,922 |
| Most Populous River Basins | 0 | - | 4.55 | 39,843 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,489 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,527 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 57,021 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,326 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,298 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,748 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,126 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,091 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,936 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,207 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,916 |
| Megadiverse Countries | 0 | - | 4.96 | 149,573 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,445 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,089 |
| Rivers by City | 0 | - | 4.38 | 31,787 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,281 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,104 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,706 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,327 |
| Geologic Time Scale | 0 | - | 4.41 | 10,085 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,488 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,863 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,776 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,468 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,041 |
| Biggest City by River | 0 | - | 4.38 | 52,989 |
| Boundary Waters | 0 | - | 4.92 | 88,865 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,477 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,873 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,607 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 61,087 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,991,259 |
| Landlocked Countries | 0 | - | 4.99 | 427,523 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 592,692 |
| World Geography on a Map #1 | 0 | - | 4.94 | 74,005 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,538 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,206 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,224 |
| World Capitals Quiz | 0 | - | 5.00 | 5,115,730 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,041 |
| Himalayan Countries | 0 | - | 4.93 | 140,944 |
| Andean Countries | 0 | - | 4.94 | 85,861 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,967 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,573 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,514 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,731 |
| Danube Countries | 0 | - | 4.97 | 72,585 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,846 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,999 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,493 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,968 |
| European Landlocked Countries | 0 | - | 4.99 | 147,803 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,576 |
| Countries with the Most Species | 0 | - | 4.99 | 103,660 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,682 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,824 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,963 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,945 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,697 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,156 |
| Countries in the Alps | 0 | - | 4.87 | 119,017 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,070 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,210 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,080 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,204 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,172 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,411 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,627 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,020 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,526 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,336 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,968 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,846 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,692 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,943 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,046 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,201 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,759 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,657 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,873 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,462 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,579 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,632 |
| Largest Countries By Category | 0 | - | 4.97 | 159,138 |
| Countries by Countries | 0 | - | 4.97 | 63,831 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,491 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,453 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,716 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,553 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,586 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,267 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,814,386 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,608 |
| Western Europe Map Quiz | 0 | - | 4.86 | 94,032 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,910 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,662 |
| Rivers on Borders | 0 | - | 4.02 | 22,757 |
| Rivers A-Z | 0 | - | 4.35 | 32,876 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,488 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,685 |
| Longest International Borders | 0 | - | 4.99 | 266,047 |
| Countries with Three Borders | 0 | - | 4.96 | 36,846 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,440 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,588 |
| Countries with the Lowest Maximum Elevation | 0 | - | 4.86 | 37,217 |
| Demonym of Every Country | 0 | - | 4.90 | 61,669 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,868 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,602,940 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,127 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,531 |
| Island Countries | 0 | - | 4.99 | 713,102 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,920 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,492 |
| Northernmost Countries | 0 | - | 4.99 | 364,738 |
| Countries of South America | 0 | - | 5.00 | 934,696 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,966 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,010 |
| "Land" Countries | 0 | - | 4.98 | 339,111 |
| Europe Map Quiz | 0 | - | 5.00 | 4,794,280 |
| All Country Flags of the World | 0 | - | 5.00 | 3,727,176 |
| Top World Languages | 0 | - | 4.92 | 831,696 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,787 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 105,168 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,510 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,095 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,589 |
| Countries with Megacities | 0 | - | 4.99 | 268,041 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,231 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,379 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,558 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,482 |
| Biggest Cities in the World | 0 | - | 4.91 | 807,296 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,549 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,610 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,114 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,377 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,493 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,447 |
| Countries by Capital City | 0 | - | 5.00 | 69,692 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,205 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,382 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,557 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,994 |
| Moved Capital Cities | 0 | - | 4.96 | 74,749 |
| World Capitals with a Unique First Letter | 0 | - | 4.83 | 75,873 |
| Countries by Official Language | 0 | - | 4.95 | 196,286 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,023 |
| Countries in their Native Language | 0 | - | 4.99 | 200,009 |
| Independence from Whom | 0 | - | 4.99 | 213,475 |
| Subdivisions by Country | 0 | - | 4.87 | 50,676 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,727 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,184 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,591 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,832 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,266 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,518 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,941 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,343 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,643 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,193 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,292 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,844 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,510 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,524 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,236 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,657 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,991 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,825 |
| World Map Quiz | 0 | - | 4.81 | 65,962 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,062 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,847 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,776 |
| Countries by Founding Story | 0 | - | 4.95 | 77,930 |
| Countries by Road Signs | 0 | - | 4.98 | 54,476 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,582 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,269 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,741 |
