| World's Longest Rivers | 0 | - | 4.89 | 136,105 |
| Countries With No Rivers | 0 | - | 4.96 | 76,703 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,984 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,633 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,258 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,275 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,983 |
| North Sea Countries | 0 | - | 4.92 | 87,308 |
| Black Sea Countries | 0 | - | 4.87 | 60,576 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,320 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,416 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,187 |
| Seas on the World Map | 0 | - | 4.96 | 135,142 |
| Seas of the World | 0 | - | 5.00 | 156,390 |
| Famous Rivers | 0 | - | 4.75 | 104,885 |
| City to River #1 | 0 | - | 4.59 | 35,831 |
| Most Populous River Basins | 0 | - | 4.55 | 39,678 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,313 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,759 |
| Countries with Fjords | 0 | - | 4.94 | 100,780 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,359 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,625 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,608 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,420 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,902 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,349 |
| Biggest City by River | 0 | - | 4.41 | 52,825 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,037 |
| Rivers by City | 0 | - | 4.38 | 31,701 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,000 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,007 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 163,388 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,743 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,324 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,339 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,423 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,668 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,494 |
| Megadiverse Countries | 0 | - | 4.96 | 134,768 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,202 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,991 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,488 |
| Geologic Time Scale | 0 | - | 4.46 | 10,002 |
| Rivers on Borders | 0 | - | 4.02 | 22,686 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,700 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,790 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,210 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,209 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,587 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,006 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,606 |
| Boundary Waters | 0 | - | 4.92 | 88,379 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,084 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,914 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 62,178 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,340 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,334,918 |
| Landlocked Countries | 0 | - | 4.99 | 418,949 |
| World Capitals Quiz | 0 | - | 5.00 | 5,063,786 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,756,952 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,500 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,625 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,678 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,905 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,007 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,582,946 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,610 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,110 |
| Island Countries | 0 | - | 4.99 | 709,763 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,001 |
| Himalayan Countries | 0 | - | 4.94 | 137,428 |
| Andean Countries | 0 | - | 4.95 | 83,942 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,231 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,662 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,832 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,353 |
| Danube Countries | 0 | - | 4.97 | 71,666 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,555 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,058 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,657 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,735 |
| European Landlocked Countries | 0 | - | 4.99 | 146,778 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,141 |
| Countries with the Most Species | 0 | - | 4.99 | 102,908 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,271 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,432 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,589 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,303 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,994 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,365 |
| Countries in the Alps | 0 | - | 4.87 | 117,688 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,135 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,368 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,424 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,986 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,096 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,582 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,286 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,189 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,970 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,553 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,479 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,338 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,926 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,189 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,207 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,189 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,063 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,572 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,532 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,381 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,231 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,000 |
| Largest Countries By Category | 0 | - | 4.97 | 157,639 |
| Countries by Countries | 0 | - | 4.96 | 62,838 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,214 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,161 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,469 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,526 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,654 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,324 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,056 |
| Northernmost Countries | 0 | - | 4.99 | 360,473 |
| Countries of South America | 0 | - | 5.00 | 922,913 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,041 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,379 |
| "Land" Countries | 0 | - | 4.98 | 335,797 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,516 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,379 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,736 |
| Top World Languages | 0 | - | 4.92 | 820,246 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 82,222 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,390 |
| Rivers A-Z | 0 | - | 4.35 | 32,767 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,073 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,073 |
| Longest International Borders | 0 | - | 4.99 | 264,665 |
| Countries with Three Borders | 0 | - | 4.96 | 36,452 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,914 |
| Largest Cities for each Latitude Degree | 0 | - | 5.00 | 48,008 |
| Demonym of Every Country | 0 | - | 4.91 | 59,151 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,346 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,167 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,020 |
| Countries with Megacities | 0 | - | 4.99 | 260,008 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,895 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,993 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,172 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,003 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,866 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,973 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,248 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,282 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,977 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,647 |
| Countries by Capital City | 0 | - | 5.00 | 67,936 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,976 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,471 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,980 |
| Moved Capital Cities | 0 | - | 4.96 | 74,067 |
| Countries by Official Language | 0 | - | 4.95 | 194,643 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,539 |
| Countries in their Native Language | 0 | - | 4.99 | 198,189 |
| Independence from Whom | 0 | - | 4.99 | 211,318 |
| Subdivisions by Country | 0 | - | 4.86 | 50,287 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,709 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,544 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,185 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,756 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,018 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,714 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,381 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,980 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,844 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,487 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,988 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,975 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,717 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,995 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,774 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,153 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,326 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,738 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,196 |
| World Map Quiz | 0 | - | 4.81 | 64,520 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,610 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,034 |
| Countries by Founding Story | 0 | - | 4.95 | 77,069 |
| Countries by Road Signs | 0 | - | 4.98 | 53,654 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,506 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,928 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,639 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,326 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,519 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,672 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,827 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,260 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,285 |
| Widest Countries East to West | 0 | - | 4.92 | 129,378 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,382 |
