| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,125 |
| North Sea Countries | 0 | - | 4.92 | 87,611 |
| Black Sea Countries | 0 | - | 4.87 | 60,701 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,511 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,618 |
| Seas on the World Map | 0 | - | 4.96 | 135,768 |
| Seas of the World | 0 | - | 5.00 | 157,881 |
| World's Longest Rivers | 0 | - | 4.90 | 137,354 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 164,921 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,334 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,915 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 97,021 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,981 |
| Countries with Fjords | 0 | - | 4.94 | 101,194 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,827 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,633 |
| Countries With No Rivers | 0 | - | 4.96 | 77,037 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,550 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,831 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,571 |
| Famous Rivers | 0 | - | 4.75 | 105,167 |
| City to River #1 | 0 | - | 4.59 | 35,884 |
| Most Populous River Basins | 0 | - | 4.55 | 39,780 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,142 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,426 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,718 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,287 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,275 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,694 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,810 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,905 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,845 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,093 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,679 |
| Megadiverse Countries | 0 | - | 4.96 | 135,159 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,355 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,048 |
| Rivers by City | 0 | - | 4.38 | 31,760 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,169 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,067 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,588 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,202 |
| Geologic Time Scale | 0 | - | 4.41 | 10,055 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,226 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,840 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,673 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,775 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,029 |
| Biggest City by River | 0 | - | 4.38 | 52,926 |
| Boundary Waters | 0 | - | 4.92 | 88,675 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,337 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,491 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,065 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,794 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,738,117 |
| Landlocked Countries | 0 | - | 4.99 | 423,890 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 583,626 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,822 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,225 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,722 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,737 |
| World Capitals Quiz | 0 | - | 5.00 | 5,095,268 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,379 |
| Himalayan Countries | 0 | - | 4.94 | 139,551 |
| Andean Countries | 0 | - | 4.94 | 85,076 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,256 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,479 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,820 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,130 |
| Danube Countries | 0 | - | 4.97 | 72,215 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,314 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,632 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,718 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,228 |
| European Landlocked Countries | 0 | - | 4.99 | 147,388 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,992 |
| Countries with the Most Species | 0 | - | 4.99 | 103,426 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,118 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,683 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,796 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,705 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,442 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,855 |
| Countries in the Alps | 0 | - | 4.87 | 118,501 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,099 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,467 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,814 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,817 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,752 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,098 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,927 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,676 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,305 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,023 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,765 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,633 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,393 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,640 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,729 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,389 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,476 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,275 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,370 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,947 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,678 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,386 |
| Largest Countries By Category | 0 | - | 4.97 | 158,555 |
| Countries by Countries | 0 | - | 4.96 | 63,446 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,020 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,350 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,624 |
| All Countries by Population With a Map | 0 | - | 4.99 | 110,305 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,213 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,913 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,792,592 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,269 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,930 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,664 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,574 |
| Rivers on Borders | 0 | - | 4.02 | 22,726 |
| Rivers A-Z | 0 | - | 4.35 | 32,835 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,576 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,446 |
| Longest International Borders | 0 | - | 4.99 | 265,533 |
| Countries with Three Borders | 0 | - | 4.96 | 36,693 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,255 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,376 |
| Countries with the Lowest Maximum Elevation | 0 | - | 4.85 | 37,123 |
| Demonym of Every Country | 0 | - | 4.90 | 61,169 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,304 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,595,451 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,128 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,610 |
| Island Countries | 0 | - | 4.99 | 711,802 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,689 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,528 |
| Northernmost Countries | 0 | - | 4.99 | 363,114 |
| Countries of South America | 0 | - | 5.00 | 930,038 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,373 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,606 |
| "Land" Countries | 0 | - | 4.98 | 337,900 |
| Europe Map Quiz | 0 | - | 5.00 | 4,779,801 |
| All Country Flags of the World | 0 | - | 5.00 | 3,697,829 |
| Top World Languages | 0 | - | 4.92 | 827,312 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,647 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,785 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,349 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,750 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,457 |
| Countries with Megacities | 0 | - | 4.99 | 265,904 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,252 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,757 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,509 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,858 |
| Biggest Cities in the World | 0 | - | 4.92 | 803,496 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,969 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,894 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,793 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,978 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,911 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,782 |
| Countries by Capital City | 0 | - | 5.00 | 69,067 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,637 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,047 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,059 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,625 |
| Moved Capital Cities | 0 | - | 4.96 | 74,518 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,739 |
| Countries by Official Language | 0 | - | 4.95 | 195,656 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,136 |
| Countries in their Native Language | 0 | - | 4.99 | 199,428 |
| Independence from Whom | 0 | - | 4.99 | 212,581 |
| Subdivisions by Country | 0 | - | 4.87 | 50,538 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,092 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,451 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,464 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,349 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,166 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,379 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,704 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,759 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,471 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,749 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,208 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,103 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,274 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,333 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,063 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,479 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,603 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,863 |
| World Map Quiz | 0 | - | 4.81 | 65,388 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,309 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,533 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,389 |
| Countries by Founding Story | 0 | - | 4.95 | 77,553 |
| Countries by Road Signs | 0 | - | 4.98 | 54,213 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,712 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,696 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,346 |
