| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,735 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,803 |
| Top 10 European Countries with the Highest Elevation | 0 | - | 4.83 | 91,427 |
| Top Rice-Producing Countries | 0 | - | 4.95 | 99,314 |
| Top Chocolate Growing Countries | 0 | - | 4.93 | 62,000 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,737,295 |
| Landlocked Countries | 0 | - | 4.99 | 423,876 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,792,504 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,374 |
| Himalayan Countries | 0 | - | 4.94 | 139,548 |
| Andean Countries | 0 | - | 4.94 | 85,071 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,254 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,472 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,815 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,127 |
| Danube Countries | 0 | - | 4.97 | 72,215 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,313 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,630 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,718 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,226 |
| European Landlocked Countries | 0 | - | 4.99 | 147,388 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,989 |
| Countries with the Most Species | 0 | - | 4.99 | 103,426 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,117 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,683 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,795 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,704 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,442 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,854 |
| Countries in the Alps | 0 | - | 4.87 | 118,500 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,095 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,464 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,814 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,816 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,751 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,098 |
| Countries with Glaciers | 0 | - | 4.97 | 105,682 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,926 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,675 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,303 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,021 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,765 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,633 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,393 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,640 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,727 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,387 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,476 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,269 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,367 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,941 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,674 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,384 |
| Largest Countries By Category | 0 | - | 4.97 | 158,553 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,829 |
| Countries by Countries | 0 | - | 4.96 | 63,445 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,018 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,350 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,624 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,909 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,855 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,025 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,255 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,322 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,854 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,622 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,808 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 117,282 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,050 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,689 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,967 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,946 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.95 | 124,834 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,512 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,300 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,125 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,601 |
| Island Countries | 0 | - | 4.99 | 711,795 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,518 |
| Northernmost Countries | 0 | - | 4.99 | 363,105 |
| Countries of South America | 0 | - | 5.00 | 930,021 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,357 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,574 |
| "Land" Countries | 0 | - | 4.98 | 337,896 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,660 |
| 10 Easternmost Countries in Africa | 0 | - | 4.97 | 24,530 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,431 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,457 |
| Countries with Megacities | 0 | - | 4.99 | 265,900 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,249 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,757 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,507 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,855 |
| Countries by Official Language | 0 | - | 4.95 | 195,655 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,131 |
| Countries in their Native Language | 0 | - | 4.99 | 199,428 |
| Independence from Whom | 0 | - | 4.99 | 212,579 |
| Subdivisions by Country | 0 | - | 4.87 | 50,538 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,082 |
| Megadiverse Countries | 0 | - | 4.96 | 135,158 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,451 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,464 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,347 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,165 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,379 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,702 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,755 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,471 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,749 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,208 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,101 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,273 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,332 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,062 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,479 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,603 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,862 |
| World Map Quiz | 0 | - | 4.81 | 65,387 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,303 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,533 |
| Countries by Founding Story | 0 | - | 4.95 | 77,549 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,698 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,694 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,345 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,981 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,207 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,327 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,539 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,590 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,202 |
| Widest Countries East to West | 0 | - | 4.92 | 130,209 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,532 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,034 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,441 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,934 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,813 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,117 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,448 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,854 |
| Countries with Double Letters | 0 | - | 4.96 | 96,695 |
| Countries that End in N | 0 | - | 4.95 | 171,575 |
| Countries with Five Letters | 0 | - | 4.96 | 283,230 |
| Countries with Six Letters | 0 | - | 4.94 | 214,037 |
| Countries with W | 0 | - | 4.96 | 160,649 |
| Countries with Z | 0 | - | 4.98 | 291,983 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,017 |
| Countries That End in U | 0 | - | 4.95 | 121,031 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,804 |
| Countries that End in O | 0 | - | 4.92 | 159,677 |
| Countries that End in R | 0 | - | 4.87 | 119,080 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,835 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,477 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,941 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,655 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,584 |
| Countries That End in Y | 0 | - | 4.91 | 186,001 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,198 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,083 |
| Countries that End in I | 0 | - | 4.94 | 135,221 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,386 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,940 |
| Countries That End in NIA | 0 | - | 4.92 | 109,928 |
| Countries That End in BIA | 0 | - | 4.93 | 149,408 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,341 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,634 |
| Countries That End in RIA | 0 | - | 4.93 | 126,947 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,223 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,124 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,963 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,404 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,943 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,695 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,196 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,495 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,729 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,550 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,525 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,213 |
| Countries that End in L | 0 | - | 4.94 | 157,000 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,756 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,308 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,158 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,089 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,133 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,129 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,926 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,301 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,063 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,739 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,061 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,175 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,761 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,124 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,337 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,746 |
| One Border Countries | 0 | - | 4.98 | 470,991 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,842,236 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,643,373 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,509 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,476 |
