| Countries by National Anthem | 0 | - | 4.92 | 71,427 |
| Boundary Waters | 0 | - | 4.92 | 88,817 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,439 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,784 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,940,133 |
| Landlocked Countries | 0 | - | 4.99 | 426,875 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,972 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,100 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,138 |
| World Capitals Quiz | 0 | - | 5.00 | 5,111,231 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,733 |
| Himalayan Countries | 0 | - | 4.93 | 140,651 |
| Andean Countries | 0 | - | 4.94 | 85,722 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,841 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,373 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,396 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,627 |
| Danube Countries | 0 | - | 4.97 | 72,510 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,731 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,930 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,355 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,814 |
| European Landlocked Countries | 0 | - | 4.99 | 147,701 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,469 |
| Countries with the Most Species | 0 | - | 4.99 | 103,625 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,571 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,802 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,933 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,899 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,653 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,098 |
| Countries in the Alps | 0 | - | 4.87 | 118,912 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,887 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,050 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,034 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,131 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,087 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,352 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,525 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,962 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,490 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,279 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,933 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,810 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,635 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,887 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,984 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,065 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,690 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,077 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,783 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,123 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,377 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,585 |
| Largest Countries By Category | 0 | - | 4.97 | 159,015 |
| Countries by Countries | 0 | - | 4.97 | 63,759 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,375 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,437 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,191 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,809,622 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,553 |
| Western Europe Map Quiz | 0 | - | 4.86 | 94,019 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,854 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,647 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,313 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,626 |
| Longest International Borders | 0 | - | 4.99 | 265,930 |
| Countries with Three Borders | 0 | - | 4.96 | 36,812 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,403 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,543 |
| Demonym of Every Country | 0 | - | 4.90 | 61,582 |
| Pacific Ocean General Knowledge | 0 | - | 4.70 | 36,403 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,218 |
| Cities with the Most Opera Performances | 0 | - | 4.64 | 41,842 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,601,340 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,940 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,138 |
| Island Countries | 0 | - | 4.99 | 712,860 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,696 |
| Northernmost Countries | 0 | - | 4.99 | 364,418 |
| Countries of South America | 0 | - | 5.00 | 933,717 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,775 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,891,737 |
| "Land" Countries | 0 | - | 4.98 | 338,809 |
| Top World Languages | 0 | - | 4.92 | 830,792 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,759 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 105,076 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,400 |
| Countries with Megacities | 0 | - | 4.99 | 267,612 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,045 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,274 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,385 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,378 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,447 |
| Cities of Origin - American Popular Music | 0 | - | 4.04 | 9,480 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,489 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,046 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,292 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,360 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,289 |
| Countries by Capital City | 0 | - | 5.00 | 69,548 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,061 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,308 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,908 |
| Moved Capital Cities | 0 | - | 4.96 | 74,701 |
| Countries by Official Language | 0 | - | 4.95 | 196,152 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,836 |
| Countries in their Native Language | 0 | - | 4.99 | 199,887 |
| Independence from Whom | 0 | - | 4.99 | 213,302 |
| Subdivisions by Country | 0 | - | 4.87 | 50,649 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,599 |
| Megadiverse Countries | 0 | - | 4.96 | 147,716 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,073 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,563 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,771 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,244 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,405 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,907 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,226 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,604 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,141 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,280 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,692 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,456 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,483 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,195 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,616 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,940 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,395,940 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,620 |
| World Map Quiz | 0 | - | 4.81 | 65,870 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,701 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,772 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,428 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,186 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,649 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,811 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,516 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,625 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,814 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,742 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,892 |
| Widest Countries East to West | 0 | - | 4.92 | 130,798 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,623 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,346 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,545 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,125 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,067 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,577 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,525 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,916 |
| Countries with Double Letters | 0 | - | 4.96 | 97,469 |
| Countries that End in N | 0 | - | 4.95 | 172,512 |
| Countries with Five Letters | 0 | - | 4.96 | 284,456 |
| Countries with Six Letters | 0 | - | 4.94 | 214,827 |
| Countries with W | 0 | - | 4.96 | 161,210 |
| Countries with Z | 0 | - | 4.98 | 292,847 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,575 |
| Countries That End in U | 0 | - | 4.95 | 121,333 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,325 |
| Countries that End in O | 0 | - | 4.92 | 160,330 |
| Countries that End in R | 0 | - | 4.87 | 119,254 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,025 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,060 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 182,984 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,083 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,533 |
| Countries That End in Y | 0 | - | 4.91 | 186,149 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,061 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,372 |
| Countries that End in I | 0 | - | 4.94 | 135,387 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,107 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,117 |
| Countries That End in NIA | 0 | - | 4.92 | 110,124 |
| Countries That End in BIA | 0 | - | 4.93 | 149,691 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,881 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,854 |
| Countries That End in RIA | 0 | - | 4.93 | 127,116 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,497 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,841 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,322 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,777 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,335 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,881 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,409 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,578 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,006 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,703 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,850 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,547 |
| Countries that End in L | 0 | - | 4.94 | 157,208 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,379 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,368 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,829 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,133 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,520 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,586 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,253 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,493 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,375 |
