| World's Longest Rivers | 0 | - | 4.88 | 121,743 |
| Countries With No Rivers | 0 | - | 4.96 | 76,172 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,449 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,110 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,820 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 80,796 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,806 |
| North Sea Countries | 0 | - | 4.92 | 86,736 |
| Black Sea Countries | 0 | - | 4.87 | 60,399 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,116 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,203 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,013 |
| Seas on the World Map | 0 | - | 4.96 | 134,645 |
| Seas of the World | 0 | - | 5.00 | 155,244 |
| Famous Rivers | 0 | - | 4.74 | 104,665 |
| City to River #1 | 0 | - | 4.59 | 35,775 |
| Most Populous River Basins | 0 | - | 4.55 | 39,592 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,189 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,471 |
| Countries with Fjords | 0 | - | 4.93 | 100,408 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,969 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,387 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,418 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,288 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,756 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,092 |
| Biggest City by River | 0 | - | 4.41 | 52,740 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,859 |
| Rivers by City | 0 | - | 4.38 | 31,666 |
| City to River #2 - Difficult | 0 | - | 4.64 | 25,874 |
| Largest Rivers by Discharge | 0 | - | 4.53 | 15,956 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 162,589 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,437 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,138 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,208 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,779 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,559 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,393 |
| Megadiverse Countries | 0 | - | 4.96 | 134,497 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,100 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,946 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,375 |
| Geologic Time Scale | 0 | - | 4.46 | 9,961 |
| Rivers on Borders | 0 | - | 4.02 | 22,657 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,061 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,755 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,193 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,172 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,512 |
| Landforms by Description Quiz | 0 | - | 4.33 | 25,992 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,397 |
| Boundary Waters | 0 | - | 4.92 | 88,183 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,931 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,578 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,714 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 60,057 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,114,544 |
| Landlocked Countries | 0 | - | 4.99 | 416,017 |
| World Capitals Quiz | 0 | - | 5.00 | 5,046,735 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,736,221 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,321 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,265 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,200 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,455 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,384 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,576,399 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,529 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,241 |
| Island Countries | 0 | - | 4.99 | 708,595 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,610 |
| Himalayan Countries | 0 | - | 4.95 | 136,231 |
| Andean Countries | 0 | - | 4.95 | 83,315 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,599 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,815 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,304 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,923 |
| Danube Countries | 0 | - | 4.97 | 71,332 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,112 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,788 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,018 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,971 |
| European Landlocked Countries | 0 | - | 4.99 | 146,048 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,658 |
| Countries with the Most Species | 0 | - | 4.99 | 97,231 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,797 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,296 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,472 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,113 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,760 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,129 |
| Countries in the Alps | 0 | - | 4.86 | 117,248 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,836 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,748 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,210 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,662 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,548 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,204 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,906 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,949 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,750 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,283 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,323 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,181 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,673 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,936 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,942 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,606 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,850 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,384 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,128 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,666 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,412 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,780 |
| Largest Countries By Category | 0 | - | 4.97 | 157,173 |
| Countries by Countries | 0 | - | 4.96 | 62,527 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,785 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,059 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,398 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,353 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,031 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,628 |
| Northernmost Countries | 0 | - | 4.99 | 359,063 |
| Countries of South America | 0 | - | 5.00 | 918,801 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,614 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,856,563 |
| "Land" Countries | 0 | - | 4.98 | 334,275 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,066 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,971 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,605 |
| Top World Languages | 0 | - | 4.92 | 816,417 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,809 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,309 |
| Rivers A-Z | 0 | - | 4.35 | 32,732 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,076 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,813 |
| Longest International Borders | 0 | - | 4.99 | 264,226 |
| Countries with Three Borders | 0 | - | 4.96 | 36,317 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,749 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,833 |
| Demonym of Every Country | 0 | - | 4.91 | 58,858 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,251 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,795 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,117 |
| Countries with Megacities | 0 | - | 4.99 | 248,622 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,986 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,459 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,366 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,414 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,355 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,468 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,983 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,962 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,179 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,038 |
| Countries by Capital City | 0 | - | 5.00 | 67,317 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,648 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,184 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,626 |
| Moved Capital Cities | 0 | - | 4.96 | 73,826 |
| Countries by Official Language | 0 | - | 4.95 | 193,785 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,274 |
| Countries in their Native Language | 0 | - | 4.99 | 197,435 |
| Independence from Whom | 0 | - | 4.99 | 210,397 |
| Subdivisions by Country | 0 | - | 4.86 | 50,169 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,217 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,640 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,056 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,594 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,934 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,073 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,176 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,472 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,503 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,333 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,795 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,068 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,555 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,650 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,622 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,826 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,162 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,368,889 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,349 |
| World Map Quiz | 0 | - | 4.81 | 63,938 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,036 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,648 |
| Countries by Founding Story | 0 | - | 4.95 | 76,815 |
| Countries by Road Signs | 0 | - | 4.98 | 53,345 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,947 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,605 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,324 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,536 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,192 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,391 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,572 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,112 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,597 |
| Widest Countries East to West | 0 | - | 4.92 | 129,093 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,307 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,575 |
