| World's Longest Rivers | 0 | - | 4.89 | 135,799 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 163,277 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,226 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,971 |
| North Sea Countries | 0 | - | 4.92 | 87,292 |
| Black Sea Countries | 0 | - | 4.87 | 60,568 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,299 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,400 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,171 |
| Seas on the World Map | 0 | - | 4.96 | 135,098 |
| Seas of the World | 0 | - | 5.00 | 156,281 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,744 |
| Countries with Fjords | 0 | - | 4.94 | 100,752 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,591 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,397 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,673 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,309 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,327 |
| Famous Rivers | 0 | - | 4.75 | 104,862 |
| City to River #1 | 0 | - | 4.59 | 35,825 |
| Most Populous River Basins | 0 | - | 4.55 | 39,674 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,302 |
| Countries With No Rivers | 0 | - | 4.96 | 76,684 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,937 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,651 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,209 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,202 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,579 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,603 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,228 |
| Megadiverse Countries | 0 | - | 4.96 | 134,741 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,329 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,613 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,188 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,987 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,886 |
| Rivers by City | 0 | - | 4.38 | 31,698 |
| City to River #2 - Difficult | 0 | - | 4.64 | 25,979 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,004 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,314 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,476 |
| Geologic Time Scale | 0 | - | 4.46 | 9,999 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,027 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,785 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,706 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,338 |
| Biggest City by River | 0 | - | 4.41 | 52,817 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,486 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,006 |
| Boundary Waters | 0 | - | 4.92 | 88,360 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,061 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,878 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 62,116 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,303 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,305,347 |
| Landlocked Countries | 0 | - | 4.99 | 418,422 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,481 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,586 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,607 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,832 |
| World Capitals Quiz | 0 | - | 5.00 | 5,061,353 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,721 |
| Himalayan Countries | 0 | - | 4.94 | 137,196 |
| Andean Countries | 0 | - | 4.95 | 83,805 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,050 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,456 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,741 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,274 |
| Danube Countries | 0 | - | 4.97 | 71,603 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,470 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,001 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,553 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,620 |
| European Landlocked Countries | 0 | - | 4.99 | 146,713 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,051 |
| Countries with the Most Species | 0 | - | 4.99 | 102,856 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,188 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,410 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,569 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,270 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,942 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,322 |
| Countries in the Alps | 0 | - | 4.87 | 117,612 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,085 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,275 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,377 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,930 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,037 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,410 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,218 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,141 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,936 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,511 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,449 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,310 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,885 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,159 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,175 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,088 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,028 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,543 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,462 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,137 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,114 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,960 |
| Largest Countries By Category | 0 | - | 4.97 | 157,559 |
| Countries by Countries | 0 | - | 4.96 | 62,793 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,140 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,147 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,463 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,379 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,611 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,281 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,754,285 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,330 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,716 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 82,192 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,380 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,977 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,046 |
| Longest International Borders | 0 | - | 4.99 | 264,588 |
| Countries with Three Borders | 0 | - | 4.96 | 36,433 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,892 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,984 |
| Demonym of Every Country | 0 | - | 4.91 | 59,115 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,610 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,582,098 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,483 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,878 |
| Island Countries | 0 | - | 4.99 | 709,568 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,606 |
| Northernmost Countries | 0 | - | 4.99 | 360,274 |
| Countries of South America | 0 | - | 5.00 | 922,377 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,295 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,148 |
| "Land" Countries | 0 | - | 4.98 | 335,696 |
| Top World Languages | 0 | - | 4.92 | 819,756 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,781 |
| Europe Map Quiz | 0 | - | 5.00 | 4,754,539 |
| All Country Flags of the World | 0 | - | 5.00 | 3,646,391 |
| Rivers on Borders | 0 | - | 4.02 | 22,684 |
| Rivers A-Z | 0 | - | 4.35 | 32,762 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,328 |
| Pacific Ocean General Knowledge | 0 | - | 4.69 | 36,277 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,116 |
| The Same Prefixes - Geography | 0 | - | 4.48 | 47,649 |
| "Second Best" Geography Edition #1 | 0 | - | 4.61 | 63,329 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,698 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,578 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,878 |
| Countries with Megacities | 0 | - | 4.99 | 256,303 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,743 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,909 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,043 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,909 |
| Biggest Cities in the World | 0 | - | 4.91 | 796,283 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,805 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,899 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,212 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,239 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,900 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,539 |
| Countries by Capital City | 0 | - | 5.00 | 67,863 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,935 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,430 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,529 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,924 |
| Moved Capital Cities | 0 | - | 4.96 | 74,018 |
| Countries by Official Language | 0 | - | 4.95 | 194,566 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,435 |
| Countries in their Native Language | 0 | - | 4.99 | 198,115 |
| Independence from Whom | 0 | - | 4.99 | 211,220 |
| Subdivisions by Country | 0 | - | 4.86 | 50,271 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,629 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,467 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,161 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,726 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,005 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,666 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,349 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,906 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,816 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,467 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,969 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,866 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,690 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,960 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,754 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,115 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,305 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,072 |
| World Map Quiz | 0 | - | 4.81 | 64,440 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,401 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,990 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,719 |
| Countries by Founding Story | 0 | - | 4.95 | 77,029 |
| Countries by Road Signs | 0 | - | 4.98 | 53,616 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,419 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,886 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,594 |
