| World's Longest Rivers | 0 | - | 4.87 | 120,983 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 161,625 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 80,373 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,727 |
| North Sea Countries | 0 | - | 4.92 | 86,574 |
| Black Sea Countries | 0 | - | 4.87 | 60,311 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 64,987 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,084 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 66,930 |
| Seas on the World Map | 0 | - | 4.96 | 133,729 |
| Seas of the World | 0 | - | 5.00 | 154,112 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,342 |
| Countries with Fjords | 0 | - | 4.93 | 100,164 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,250 |
| Layers of the Earth and Atmosphere | 0 | - | 4.97 | 50,154 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 95,896 |
| Biggest Lakes in the World | 0 | - | 4.62 | 88,962 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,081 |
| Famous Rivers | 0 | - | 4.74 | 104,476 |
| City to River #1 | 0 | - | 4.59 | 35,741 |
| Most Populous River Basins | 0 | - | 4.61 | 39,531 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,093 |
| Countries With No Rivers | 0 | - | 4.96 | 75,994 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,183 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,408 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,145 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,139 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,442 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 86,787 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,558 |
| Megadiverse Countries | 0 | - | 4.97 | 133,841 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,640 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,194 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 29,972 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,905 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,658 |
| City to River #2 - Difficult | 0 | - | 4.63 | 25,749 |
| Largest Rivers by Discharge | 0 | - | 4.53 | 15,916 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,846 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,323 |
| Geologic Time Scale | 0 | - | 4.46 | 9,906 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,727 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,727 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,139 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,043 |
| Rivers by City | 0 | - | 4.38 | 31,624 |
| Biggest City by River | 0 | - | 4.41 | 52,684 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,298 |
| Landforms by Description Quiz | 0 | - | 4.33 | 25,977 |
| Boundary Waters | 0 | - | 4.92 | 88,002 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,790 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,196 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,161 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,779 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,865,801 |
| Landlocked Countries | 0 | - | 4.99 | 413,018 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,117 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 94,920 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,496 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 122,859 |
| World Capitals Quiz | 0 | - | 5.00 | 5,026,813 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,322 |
| Himalayan Countries | 0 | - | 4.95 | 135,120 |
| Andean Countries | 0 | - | 4.94 | 82,697 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,117 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,036 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,796 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,500 |
| Danube Countries | 0 | - | 4.97 | 71,015 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,669 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,472 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,327 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,242 |
| European Landlocked Countries | 0 | - | 4.99 | 145,685 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,080 |
| Countries with the Most Species | 0 | - | 4.99 | 95,204 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,237 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,180 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,339 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,916 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,532 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,889 |
| Countries in the Alps | 0 | - | 4.87 | 116,716 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,497 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,117 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,957 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,344 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,079 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,944 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,494 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,699 |
| Largest Country by Body of Water | 0 | - | 4.95 | 56,588 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,990 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,171 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,006 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,388 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,693 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,691 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,924 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,582 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,210 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,705 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,926 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,422 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,554 |
| Largest Countries By Category | 0 | - | 4.97 | 156,654 |
| Countries by Countries | 0 | - | 4.96 | 62,189 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,259 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,939 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,309 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,028 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,679 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,711,097 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,650 |
| Western Europe Map Quiz | 0 | - | 4.87 | 93,461 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,491 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,218 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,201 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,563 |
| Longest International Borders | 0 | - | 4.99 | 263,404 |
| Countries with Three Borders | 0 | - | 4.96 | 36,141 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,570 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,618 |
| Demonym of Every Country | 0 | - | 4.91 | 58,580 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,211 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,569,485 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,887 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,084 |
| Island Countries | 0 | - | 4.99 | 707,322 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,585 |
| Northernmost Countries | 0 | - | 4.99 | 357,348 |
| Countries of South America | 0 | - | 5.00 | 913,660 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,016 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,804 |
| "Land" Countries | 0 | - | 4.98 | 333,466 |
| Top World Languages | 0 | - | 4.92 | 812,203 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,542 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,237 |
| All Country Flags of the World | 0 | - | 5.00 | 3,595,801 |
| Rivers on Borders | 0 | - | 4.02 | 22,633 |
| Rivers A-Z | 0 | - | 4.35 | 32,671 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,135 |
| Pacific Ocean General Knowledge | 0 | - | 4.69 | 36,201 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,400 |
| The Same Prefixes - Geography | 0 | - | 4.49 | 47,355 |
| "Second Best" Geography Edition #1 | 0 | - | 4.64 | 62,994 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,814 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,284 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,908 |
| Countries with Megacities | 0 | - | 4.99 | 246,302 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,830 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,754 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,287 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,694 |
| Biggest Cities in the World | 0 | - | 4.92 | 789,495 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,620 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,835 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,580 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,534 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,499 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,257 |
| Countries by Capital City | 0 | - | 5.00 | 66,492 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,240 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,823 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,036 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,356 |
| Moved Capital Cities | 0 | - | 4.96 | 73,530 |
| Countries by Official Language | 0 | - | 4.95 | 192,620 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,929 |
| Countries in their Native Language | 0 | - | 4.99 | 196,502 |
| Independence from Whom | 0 | - | 4.99 | 209,525 |
| Subdivisions by Country | 0 | - | 4.86 | 50,038 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,606 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,677 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,883 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,381 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,844 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,566 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,946 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,618 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,076 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,186 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,721 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,429 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,374 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,448 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,462 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,620 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,987 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,389 |
| World Map Quiz | 0 | - | 4.81 | 63,396 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,316 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,239 |
| Countries by Founding Story | 0 | - | 4.95 | 76,463 |
| Countries by Road Signs | 0 | - | 4.98 | 53,014 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,197 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,902 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,869 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,550 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,788 |
