| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,784 |
| North Sea Countries | 0 | - | 4.92 | 86,679 |
| Black Sea Countries | 0 | - | 4.87 | 60,379 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,075 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,160 |
| Seas on the World Map | 0 | - | 4.96 | 134,479 |
| Seas of the World | 0 | - | 5.00 | 154,803 |
| World's Longest Rivers | 0 | - | 4.88 | 121,266 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 162,226 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 80,652 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 66,990 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,430 |
| Countries with Fjords | 0 | - | 4.93 | 100,307 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,347 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,236 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,078 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,157 |
| Famous Rivers | 0 | - | 4.74 | 104,608 |
| City to River #1 | 0 | - | 4.59 | 35,760 |
| Most Populous River Basins | 0 | - | 4.61 | 39,575 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,159 |
| Countries With No Rivers | 0 | - | 4.96 | 76,110 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,355 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,180 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,163 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,487 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 86,996 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,740 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,510 |
| Megadiverse Countries | 0 | - | 4.97 | 134,014 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,866 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,314 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,731 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,008 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,066 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,926 |
| Rivers by City | 0 | - | 4.38 | 31,655 |
| City to River #2 - Difficult | 0 | - | 4.64 | 25,827 |
| Largest Rivers by Discharge | 0 | - | 4.53 | 15,941 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,358 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,816 |
| Geologic Time Scale | 0 | - | 4.46 | 9,939 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,326 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,745 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,533 |
| Biggest City by River | 0 | - | 4.41 | 52,717 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,355 |
| Landforms by Description Quiz | 0 | - | 4.33 | 25,985 |
| Boundary Waters | 0 | - | 4.92 | 88,122 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,885 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,457 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,535 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,970 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,023,754 |
| Landlocked Countries | 0 | - | 4.99 | 414,933 |
| World Capitals Quiz | 0 | - | 5.00 | 5,040,324 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,727,387 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,261 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,155 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,030 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,266 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,474 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,574,001 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,583 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,522 |
| Island Countries | 0 | - | 4.99 | 708,132 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,116 |
| Himalayan Countries | 0 | - | 4.95 | 135,822 |
| Andean Countries | 0 | - | 4.94 | 83,096 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,420 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,526 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,121 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,776 |
| Danube Countries | 0 | - | 4.97 | 71,218 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,945 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,669 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,773 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,688 |
| European Landlocked Countries | 0 | - | 4.99 | 145,917 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,438 |
| Countries with the Most Species | 0 | - | 4.99 | 95,317 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,582 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,249 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,422 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,036 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,686 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,049 |
| Countries in the Alps | 0 | - | 4.86 | 117,045 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,715 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,507 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,133 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,545 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,332 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,111 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,743 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,866 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,652 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,174 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,255 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,116 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,578 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,852 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,862 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,359 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,761 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,332 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,973 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,023 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,077 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,699 |
| Largest Countries By Category | 0 | - | 4.97 | 156,964 |
| Countries by Countries | 0 | - | 4.96 | 62,402 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,593 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,008 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,369 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,245 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,903 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,223 |
| Northernmost Countries | 0 | - | 4.99 | 358,477 |
| Countries of South America | 0 | - | 5.00 | 917,085 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,240 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,852,840 |
| "Land" Countries | 0 | - | 4.98 | 333,997 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,847 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,528 |
| Top World Languages | 0 | - | 4.92 | 814,868 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,673 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,278 |
| Rivers on Borders | 0 | - | 4.02 | 22,647 |
| Rivers A-Z | 0 | - | 4.35 | 32,713 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,767 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,716 |
| Longest International Borders | 0 | - | 4.99 | 264,036 |
| Countries with Three Borders | 0 | - | 4.96 | 36,269 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,681 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,769 |
| Demonym of Every Country | 0 | - | 4.91 | 58,762 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,210 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,664 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,785 |
| Countries with Megacities | 0 | - | 4.99 | 247,940 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,667 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,283 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,049 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,238 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,080 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,280 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,875 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,835 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,994 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,818 |
| Countries by Capital City | 0 | - | 5.00 | 67,057 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,530 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 114,053 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,532 |
| Moved Capital Cities | 0 | - | 4.96 | 73,731 |
| Countries by Official Language | 0 | - | 4.95 | 193,056 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,537 |
| Countries in their Native Language | 0 | - | 4.99 | 196,906 |
| Independence from Whom | 0 | - | 4.99 | 210,038 |
| Subdivisions by Country | 0 | - | 4.86 | 50,121 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,989 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,069 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,986 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,498 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,894 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,826 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,095 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,270 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,345 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,275 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,775 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,825 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,485 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,590 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,570 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,763 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,105 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,869 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,987 |
| World Map Quiz | 0 | - | 4.81 | 63,713 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,416 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,511 |
| Countries by Founding Story | 0 | - | 4.95 | 76,671 |
| Countries by Road Signs | 0 | - | 4.98 | 53,247 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,698 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,453 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,190 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,196 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,067 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,271 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,463 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,042 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,499 |
| Widest Countries East to West | 0 | - | 4.92 | 128,990 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,276 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,421 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,633 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,829 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,773 |
