| World's Longest Rivers | 0 | - | 4.90 | 137,088 |
| Countries With No Rivers | 0 | - | 4.96 | 76,938 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,317 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,985 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,604 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,743 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,086 |
| North Sea Countries | 0 | - | 4.92 | 87,509 |
| Black Sea Countries | 0 | - | 4.87 | 60,663 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,462 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,562 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,288 |
| Seas on the World Map | 0 | - | 4.96 | 135,574 |
| Seas of the World | 0 | - | 5.00 | 157,503 |
| Famous Rivers | 0 | - | 4.75 | 105,089 |
| City to River #1 | 0 | - | 4.59 | 35,868 |
| Most Populous River Basins | 0 | - | 4.55 | 39,753 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,394 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,913 |
| Countries with Fjords | 0 | - | 4.94 | 101,069 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,671 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,826 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,761 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,577 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,038 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,594 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,156 |
| Rivers by City | 0 | - | 4.38 | 31,744 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,128 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,043 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 164,443 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 29,085 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,752 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,507 |
| Biggest City by River | 0 | - | 4.38 | 52,892 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,443 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,785 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,624 |
| Megadiverse Countries | 0 | - | 4.96 | 135,054 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,309 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,031 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,545 |
| Geologic Time Scale | 0 | - | 4.41 | 10,037 |
| Rivers on Borders | 0 | - | 4.02 | 22,712 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,928 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,822 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,259 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,259 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,664 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,026 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,741 |
| Boundary Waters | 0 | - | 4.92 | 88,600 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,270 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,321 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,792 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,657 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,617,432 |
| Landlocked Countries | 0 | - | 4.99 | 422,417 |
| World Capitals Quiz | 0 | - | 5.00 | 5,085,891 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,781,917 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,727 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,064 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,469 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,482 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,919 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,591,624 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,633 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,618 |
| Island Countries | 0 | - | 4.99 | 711,192 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,741 |
| Himalayan Countries | 0 | - | 4.95 | 138,935 |
| Andean Countries | 0 | - | 4.93 | 84,743 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,945 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,012 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,555 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,891 |
| Danube Countries | 0 | - | 4.97 | 72,075 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,094 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,476 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,412 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,892 |
| European Landlocked Countries | 0 | - | 4.99 | 147,202 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,734 |
| Countries with the Most Species | 0 | - | 4.99 | 103,281 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,852 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,622 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,741 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,578 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,275 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,714 |
| Countries in the Alps | 0 | - | 4.87 | 118,281 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,394 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,127 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,698 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,640 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,567 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,987 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,728 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,549 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,204 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,904 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,681 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,555 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,263 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,523 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,576 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,008 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,353 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,304 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,150 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,163 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,257 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,269 |
| Largest Countries By Category | 0 | - | 4.97 | 158,295 |
| Countries by Countries | 0 | - | 4.96 | 63,292 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,750 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,304 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,577 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,736 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,068 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,718 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,405 |
| Northernmost Countries | 0 | - | 4.99 | 362,172 |
| Countries of South America | 0 | - | 5.00 | 927,979 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,721 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,683 |
| "Land" Countries | 0 | - | 4.98 | 337,460 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,006 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,747 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,868 |
| Top World Languages | 0 | - | 4.92 | 824,900 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,543 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,510 |
| Rivers A-Z | 0 | - | 4.35 | 32,805 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,110 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,330 |
| Longest International Borders | 0 | - | 4.99 | 265,268 |
| Countries with Three Borders | 0 | - | 4.96 | 36,628 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,147 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,252 |
| Demonym of Every Country | 0 | - | 4.91 | 60,818 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,550 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,608 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,016 |
| Countries with Megacities | 0 | - | 4.99 | 264,858 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,849 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,533 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,108 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,612 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,632 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,594 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,587 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,722 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,549 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,406 |
| Countries by Capital City | 0 | - | 5.00 | 68,699 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,408 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 114,851 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,446 |
| Moved Capital Cities | 0 | - | 4.96 | 74,379 |
| Countries by Official Language | 0 | - | 4.95 | 195,334 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,498 |
| Countries in their Native Language | 0 | - | 4.99 | 199,128 |
| Independence from Whom | 0 | - | 4.99 | 212,206 |
| Subdivisions by Country | 0 | - | 4.87 | 50,447 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,804 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,179 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,383 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,260 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,122 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,187 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,621 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,531 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,059 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,681 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,160 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,762 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,915 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,229 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,989 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,375 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,514 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,761 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,311 |
| World Map Quiz | 0 | - | 4.81 | 65,152 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,504 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,392 |
| Countries by Founding Story | 0 | - | 4.95 | 77,412 |
| Countries by Road Signs | 0 | - | 4.98 | 54,054 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,174 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,326 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,033 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,326 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,935 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,053 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,331 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,469 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,604 |
| Widest Countries East to West | 0 | - | 4.92 | 129,694 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,467 |
