| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,012 |
| North Sea Countries | 0 | - | 4.92 | 87,383 |
| Black Sea Countries | 0 | - | 4.87 | 60,598 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,374 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,473 |
| Seas on the World Map | 0 | - | 4.96 | 135,335 |
| Seas of the World | 0 | - | 5.00 | 156,863 |
| World's Longest Rivers | 0 | - | 4.90 | 136,685 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 163,805 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,457 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,225 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,822 |
| Countries with Fjords | 0 | - | 4.94 | 100,889 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,677 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,490 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,408 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,398 |
| Famous Rivers | 0 | - | 4.75 | 104,960 |
| City to River #1 | 0 | - | 4.59 | 35,848 |
| Most Populous River Basins | 0 | - | 4.55 | 39,713 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,349 |
| Countries With No Rivers | 0 | - | 4.96 | 76,805 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,106 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,238 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,235 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,625 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,779 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,431 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,724 |
| Megadiverse Countries | 0 | - | 4.96 | 134,871 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,502 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,699 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,959 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,456 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,252 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,003 |
| Rivers by City | 0 | - | 4.38 | 31,715 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,043 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,020 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,513 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,078 |
| Geologic Time Scale | 0 | - | 4.41 | 10,011 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,868 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,799 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 413,051 |
| Biggest City by River | 0 | - | 4.38 | 52,857 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,547 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,018 |
| Boundary Waters | 0 | - | 4.92 | 88,460 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,160 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,076 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,432 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,458 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,449,343 |
| Landlocked Countries | 0 | - | 4.99 | 420,380 |
| World Capitals Quiz | 0 | - | 5.00 | 5,072,954 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,766,761 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,595 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,821 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,940 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,168 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,187 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,137 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,009 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,162 |
| Island Countries | 0 | - | 4.99 | 710,333 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,647 |
| Himalayan Countries | 0 | - | 4.95 | 138,044 |
| Andean Countries | 0 | - | 4.95 | 84,238 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,462 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,289 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,100 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,544 |
| Danube Countries | 0 | - | 4.97 | 71,813 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,767 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,212 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,942 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,389 |
| European Landlocked Countries | 0 | - | 4.99 | 146,950 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,356 |
| Countries with the Most Species | 0 | - | 4.99 | 103,075 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,517 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,494 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,653 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,432 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,112 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,498 |
| Countries in the Alps | 0 | - | 4.87 | 117,946 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,140 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,673 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,540 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,437 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,287 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,826 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,456 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,327 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,068 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,696 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,560 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,417 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,059 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,339 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,353 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,494 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,168 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,682 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,798 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,104 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,631 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,099 |
| Largest Countries By Category | 0 | - | 4.97 | 157,906 |
| Countries by Countries | 0 | - | 4.97 | 63,002 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,442 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,213 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,505 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,038 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,792 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,493 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,719 |
| Northernmost Countries | 0 | - | 4.99 | 361,176 |
| Countries of South America | 0 | - | 5.00 | 924,923 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,832 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,510 |
| "Land" Countries | 0 | - | 4.98 | 336,183 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,553 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,791 |
| Top World Languages | 0 | - | 4.92 | 822,079 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,347 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,439 |
| Rivers on Borders | 0 | - | 4.02 | 22,692 |
| Rivers A-Z | 0 | - | 4.35 | 32,779 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,554 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,173 |
| Longest International Borders | 0 | - | 4.99 | 264,921 |
| Countries with Three Borders | 0 | - | 4.96 | 36,523 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,009 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,122 |
| Demonym of Every Country | 0 | - | 4.91 | 60,005 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,392 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,344 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,436 |
| Countries with Megacities | 0 | - | 4.99 | 263,284 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,274 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,229 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,570 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,268 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,108 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,232 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,392 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,476 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,206 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,966 |
| Countries by Capital City | 0 | - | 5.00 | 68,245 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,153 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,638 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,184 |
| Moved Capital Cities | 0 | - | 4.96 | 74,201 |
| Countries by Official Language | 0 | - | 4.95 | 194,916 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,925 |
| Countries in their Native Language | 0 | - | 4.99 | 198,439 |
| Independence from Whom | 0 | - | 4.99 | 211,685 |
| Subdivisions by Country | 0 | - | 4.86 | 50,355 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,960 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,773 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,252 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,841 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,058 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,898 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,471 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,199 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,930 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,557 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,035 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,323 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,787 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,089 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,862 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,251 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,410 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,350 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,627 |
| World Map Quiz | 0 | - | 4.81 | 64,846 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,356 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,181 |
| Countries by Founding Story | 0 | - | 4.95 | 77,208 |
| Countries by Road Signs | 0 | - | 4.98 | 53,817 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,766 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,080 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,821 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,749 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,701 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,836 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,983 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,347 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,423 |
| Widest Countries East to West | 0 | - | 4.92 | 129,492 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,415 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,154 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,057 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,633 |
