| World's Longest Rivers | 0 | - | 4.90 | 137,058 |
| Countries With No Rivers | 0 | - | 4.96 | 76,922 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,293 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,961 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,584 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,721 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,076 |
| North Sea Countries | 0 | - | 4.92 | 87,499 |
| Black Sea Countries | 0 | - | 4.87 | 60,652 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,454 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,550 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,281 |
| Seas on the World Map | 0 | - | 4.96 | 135,552 |
| Seas of the World | 0 | - | 5.00 | 157,442 |
| Famous Rivers | 0 | - | 4.75 | 105,068 |
| City to River #1 | 0 | - | 4.59 | 35,864 |
| Most Populous River Basins | 0 | - | 4.55 | 39,748 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,390 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,905 |
| Countries with Fjords | 0 | - | 4.94 | 101,053 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,661 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,811 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,750 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,572 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,022 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,580 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,146 |
| Rivers by City | 0 | - | 4.38 | 31,741 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,115 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,040 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 164,372 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 29,060 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,744 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,494 |
| Biggest City by River | 0 | - | 4.38 | 52,885 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,405 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,775 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,609 |
| Megadiverse Countries | 0 | - | 4.96 | 135,033 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,303 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,030 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,543 |
| Geologic Time Scale | 0 | - | 4.41 | 10,036 |
| Rivers on Borders | 0 | - | 4.02 | 22,711 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,918 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,819 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,258 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,257 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,656 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,025 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,734 |
| Boundary Waters | 0 | - | 4.92 | 88,585 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,266 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,290 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,763 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,630 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,600,844 |
| Landlocked Countries | 0 | - | 4.99 | 422,186 |
| World Capitals Quiz | 0 | - | 5.00 | 5,084,508 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,780,301 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,719 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,040 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,441 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,450 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,753 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,591,034 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,574 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,474 |
| Island Countries | 0 | - | 4.99 | 711,129 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,595 |
| Himalayan Countries | 0 | - | 4.95 | 138,844 |
| Andean Countries | 0 | - | 4.93 | 84,674 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,873 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,916 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,506 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,848 |
| Danube Countries | 0 | - | 4.97 | 72,042 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,055 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,451 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,358 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,845 |
| European Landlocked Countries | 0 | - | 4.99 | 147,170 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,684 |
| Countries with the Most Species | 0 | - | 4.99 | 103,266 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,810 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,606 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,730 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,562 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,249 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,688 |
| Countries in the Alps | 0 | - | 4.87 | 118,239 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,256 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,072 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,676 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,621 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,545 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,965 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,699 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,516 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,195 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,874 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,668 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,541 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,243 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,497 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,548 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,964 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,332 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,069 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,124 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,054 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,188 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,253 |
| Largest Countries By Category | 0 | - | 4.97 | 158,253 |
| Countries by Countries | 0 | - | 4.96 | 63,260 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,714 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,297 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,571 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,679 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,049 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,693 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,156 |
| Northernmost Countries | 0 | - | 4.99 | 362,061 |
| Countries of South America | 0 | - | 5.00 | 927,664 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,384 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,022 |
| "Land" Countries | 0 | - | 4.98 | 337,406 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 115,981 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,732 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,864 |
| Top World Languages | 0 | - | 4.92 | 824,594 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,527 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,504 |
| Rivers A-Z | 0 | - | 4.35 | 32,802 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,049 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,304 |
| Longest International Borders | 0 | - | 4.99 | 265,229 |
| Countries with Three Borders | 0 | - | 4.96 | 36,625 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,138 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,239 |
| Demonym of Every Country | 0 | - | 4.91 | 60,757 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,469 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,575 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,958 |
| Countries with Megacities | 0 | - | 4.99 | 264,685 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,791 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,500 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,055 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,576 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,585 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,557 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,561 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,701 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,515 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,348 |
| Countries by Capital City | 0 | - | 5.00 | 68,663 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,390 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,828 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,424 |
| Moved Capital Cities | 0 | - | 4.96 | 74,359 |
| Countries by Official Language | 0 | - | 4.95 | 195,296 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,437 |
| Countries in their Native Language | 0 | - | 4.99 | 199,085 |
| Independence from Whom | 0 | - | 4.99 | 212,153 |
| Subdivisions by Country | 0 | - | 4.86 | 50,438 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,768 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,132 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,373 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,247 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,116 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,164 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,608 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,504 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,048 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,671 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,154 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,709 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,899 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,219 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,981 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,364 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,507 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,264 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,249 |
| World Map Quiz | 0 | - | 4.81 | 65,127 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,404 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,371 |
| Countries by Founding Story | 0 | - | 4.95 | 77,392 |
| Countries by Road Signs | 0 | - | 4.98 | 54,028 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,131 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,307 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,018 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,269 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,918 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,029 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,321 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,456 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,587 |
| Widest Countries East to West | 0 | - | 4.92 | 129,668 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,462 |
