| World's Longest Rivers | 0 | - | 4.90 | 137,493 |
| Countries With No Rivers | 0 | - | 4.96 | 77,082 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,929 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,241 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,804 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 82,010 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,147 |
| North Sea Countries | 0 | - | 4.92 | 87,656 |
| Black Sea Countries | 0 | - | 4.87 | 60,714 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,549 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,645 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,351 |
| Seas on the World Map | 0 | - | 4.96 | 135,879 |
| Seas of the World | 0 | - | 5.00 | 158,216 |
| Famous Rivers | 0 | - | 4.75 | 105,208 |
| City to River #1 | 0 | - | 4.59 | 35,895 |
| Most Populous River Basins | 0 | - | 4.55 | 39,803 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,457 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,015 |
| Countries with Fjords | 0 | - | 4.94 | 101,261 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,899 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,956 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,874 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,674 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,130 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,753 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,231 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,200 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,077 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 165,220 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,293 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,882 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,619 |
| Biggest City by River | 0 | - | 4.38 | 52,946 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,966 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,857 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,710 |
| Megadiverse Countries | 0 | - | 4.96 | 135,216 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,384 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,068 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,613 |
| Geologic Time Scale | 0 | - | 4.41 | 10,060 |
| Rivers on Borders | 0 | - | 4.02 | 22,734 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 97,076 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,846 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,303 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,283 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,713 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,033 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,832 |
| Boundary Waters | 0 | - | 4.92 | 88,725 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,377 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,605 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,219 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,874 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,811,212 |
| Landlocked Countries | 0 | - | 4.99 | 424,854 |
| World Capitals Quiz | 0 | - | 5.00 | 5,101,111 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,798,582 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,882 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,322 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,859 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,882 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,727 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,597,632 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,422 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,197 |
| Island Countries | 0 | - | 4.99 | 712,220 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,796 |
| Himalayan Countries | 0 | - | 4.93 | 139,887 |
| Andean Countries | 0 | - | 4.94 | 85,240 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,418 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,746 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,984 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,287 |
| Danube Countries | 0 | - | 4.97 | 72,298 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,453 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,742 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,921 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,421 |
| European Landlocked Countries | 0 | - | 4.99 | 147,496 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,142 |
| Countries with the Most Species | 0 | - | 4.99 | 103,508 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,287 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,724 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,837 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,770 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,507 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,936 |
| Countries in the Alps | 0 | - | 4.87 | 118,647 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,419 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,677 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,902 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,931 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,853 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,168 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,293 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,794 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,360 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,098 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,808 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,678 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,479 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,713 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,806 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,592 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,542 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,633 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,530 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,345 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,922 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,457 |
| Largest Countries By Category | 0 | - | 4.97 | 158,722 |
| Countries by Countries | 0 | - | 4.96 | 63,544 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,150 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,374 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,650 |
| All Countries by Population With a Map | 0 | - | 4.98 | 110,685 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,309 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,014 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,701 |
| Northernmost Countries | 0 | - | 4.99 | 363,592 |
| Countries of South America | 0 | - | 5.00 | 931,412 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,798 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,407 |
| "Land" Countries | 0 | - | 4.98 | 338,174 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,324 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,378 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,956 |
| Top World Languages | 0 | - | 4.92 | 828,670 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,738 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,601 |
| Rivers A-Z | 0 | - | 4.35 | 32,846 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,860 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,504 |
| Longest International Borders | 0 | - | 4.99 | 265,699 |
| Countries with Three Borders | 0 | - | 4.96 | 36,735 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,308 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,454 |
| Demonym of Every Country | 0 | - | 4.90 | 61,359 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,703 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,912 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,913 |
| Countries with Megacities | 0 | - | 4.99 | 266,642 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,625 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,986 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,927 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,089 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,151 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,232 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,892 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,095 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,093 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,004 |
| Countries by Capital City | 0 | - | 5.00 | 69,239 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,768 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,150 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,739 |
| Moved Capital Cities | 0 | - | 4.96 | 74,590 |
| Countries by Official Language | 0 | - | 4.95 | 195,843 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,415 |
| Countries in their Native Language | 0 | - | 4.99 | 199,615 |
| Independence from Whom | 0 | - | 4.99 | 212,868 |
| Subdivisions by Country | 0 | - | 4.87 | 50,578 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,296 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,825 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,496 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,404 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,200 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,491 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,789 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,998 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,523 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,788 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,231 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,324 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,330 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,396 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,115 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,540 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,656 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,593 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,130 |
| World Map Quiz | 0 | - | 4.81 | 65,556 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,811 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,620 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,491 |
| Countries by Founding Story | 0 | - | 4.95 | 77,721 |
| Countries by Road Signs | 0 | - | 4.98 | 54,286 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,072 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,986 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,464 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,341 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,323 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,449 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,652 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,638 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,413 |
| Widest Countries East to West | 0 | - | 4.92 | 130,364 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,576 |
