| World's Longest Rivers | 0 | - | 4.90 | 137,388 |
| Countries With No Rivers | 0 | - | 4.96 | 77,047 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,689 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,156 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,727 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,921 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,126 |
| North Sea Countries | 0 | - | 4.92 | 87,613 |
| Black Sea Countries | 0 | - | 4.87 | 60,702 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,516 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,621 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,335 |
| Seas on the World Map | 0 | - | 4.96 | 135,788 |
| Seas of the World | 0 | - | 5.00 | 157,909 |
| Famous Rivers | 0 | - | 4.75 | 105,177 |
| City to River #1 | 0 | - | 4.59 | 35,884 |
| Most Populous River Basins | 0 | - | 4.55 | 39,781 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,431 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,984 |
| Countries with Fjords | 0 | - | 4.94 | 101,198 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,822 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,911 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,830 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,635 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,108 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,687 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,204 |
| Rivers by City | 0 | - | 4.38 | 31,761 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,171 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,068 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 164,966 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,238 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,838 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,572 |
| Biggest City by River | 0 | - | 4.38 | 52,927 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,793 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,847 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,675 |
| Megadiverse Countries | 0 | - | 4.96 | 135,162 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,356 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,050 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,590 |
| Geologic Time Scale | 0 | - | 4.41 | 10,057 |
| Rivers on Borders | 0 | - | 4.02 | 22,726 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 97,027 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,841 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,291 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,275 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,698 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,029 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,802 |
| Boundary Waters | 0 | - | 4.92 | 88,685 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,344 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,501 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,080 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,806 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,746,061 |
| Landlocked Countries | 0 | - | 4.99 | 424,006 |
| World Capitals Quiz | 0 | - | 5.00 | 5,095,941 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,793,224 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,827 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,235 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,734 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,755 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,406 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,595,715 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,159 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,656 |
| Island Countries | 0 | - | 4.99 | 711,849 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,424 |
| Himalayan Countries | 0 | - | 4.94 | 139,599 |
| Andean Countries | 0 | - | 4.94 | 85,089 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,284 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,510 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,847 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,143 |
| Danube Countries | 0 | - | 4.97 | 72,227 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,336 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,651 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,747 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,251 |
| European Landlocked Countries | 0 | - | 4.99 | 147,400 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,008 |
| Countries with the Most Species | 0 | - | 4.99 | 103,436 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,131 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,690 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,801 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,711 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,444 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,858 |
| Countries in the Alps | 0 | - | 4.87 | 118,508 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,131 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,488 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,823 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,825 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,758 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,105 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,946 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,688 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,313 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,028 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,770 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,636 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,401 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,643 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,734 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,404 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,483 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,333 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,386 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,990 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,709 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,393 |
| Largest Countries By Category | 0 | - | 4.97 | 158,567 |
| Countries by Countries | 0 | - | 4.96 | 63,455 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,030 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,351 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,628 |
| All Countries by Population With a Map | 0 | - | 4.99 | 110,335 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,218 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,924 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,683 |
| Northernmost Countries | 0 | - | 4.99 | 363,178 |
| Countries of South America | 0 | - | 5.00 | 930,166 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,546 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,901 |
| "Land" Countries | 0 | - | 4.98 | 337,923 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,207 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,281 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,933 |
| Top World Languages | 0 | - | 4.92 | 827,462 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,671 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,578 |
| Rivers A-Z | 0 | - | 4.35 | 32,836 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,613 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,449 |
| Longest International Borders | 0 | - | 4.99 | 265,549 |
| Countries with Three Borders | 0 | - | 4.96 | 36,697 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,263 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,382 |
| Demonym of Every Country | 0 | - | 4.90 | 61,188 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,658 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,806 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,486 |
| Countries with Megacities | 0 | - | 4.99 | 265,947 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,281 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,765 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,535 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,883 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,994 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,910 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,805 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,991 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,927 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,806 |
| Countries by Capital City | 0 | - | 5.00 | 69,086 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,653 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,057 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,633 |
| Moved Capital Cities | 0 | - | 4.96 | 74,524 |
| Countries by Official Language | 0 | - | 4.95 | 195,678 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,167 |
| Countries in their Native Language | 0 | - | 4.99 | 199,450 |
| Independence from Whom | 0 | - | 4.99 | 212,628 |
| Subdivisions by Country | 0 | - | 4.87 | 50,543 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,122 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,468 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,464 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,355 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,167 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,387 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,711 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,798 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,476 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,752 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,210 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,116 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,277 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,341 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,067 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,482 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,611 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,389,214 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,881 |
| World Map Quiz | 0 | - | 4.81 | 65,390 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,371 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,542 |
| Countries by Founding Story | 0 | - | 4.95 | 77,596 |
| Countries by Road Signs | 0 | - | 4.98 | 54,217 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,819 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,726 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,374 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,037 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,222 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,349 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,552 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,594 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,473 |
| Widest Countries East to West | 0 | - | 4.92 | 130,239 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,544 |
