| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,776 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,635,506 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,555 |
| Countries with Glaciers | 0 | - | 4.96 | 105,598 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,723 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,780 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 191,954 |
| Landlocked Countries | 0 | - | 4.99 | 422,648 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,783,419 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,631 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,209 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,704 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,739 |
| Island Countries | 0 | - | 4.99 | 711,275 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,852 |
| Himalayan Countries | 0 | - | 4.95 | 139,033 |
| Andean Countries | 0 | - | 4.93 | 84,802 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,027 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,105 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,615 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,928 |
| Danube Countries | 0 | - | 4.97 | 72,099 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,130 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,499 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,454 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,945 |
| European Landlocked Countries | 0 | - | 4.99 | 147,234 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,770 |
| Countries with the Most Species | 0 | - | 4.99 | 103,310 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,891 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,632 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,750 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,599 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,320 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,744 |
| Countries in the Alps | 0 | - | 4.87 | 118,315 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,543 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,197 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,721 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,674 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,586 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,001 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,758 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,570 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,227 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,925 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,691 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,574 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,299 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,542 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,608 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,062 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,373 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,502 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,205 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,301 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,329 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,286 |
| Largest Countries By Category | 0 | - | 4.97 | 158,348 |
| Countries by Countries | 0 | - | 4.96 | 63,321 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,336 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,778 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,311 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,584 |
| All Countries by Population With a Map | 0 | - | 4.99 | 109,822 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,092 |
| 20 Random Country Flags | 0 | - | 4.99 | 615,219 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,750 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,711 |
| Northernmost Countries | 0 | - | 4.99 | 362,284 |
| Countries of South America | 0 | - | 5.00 | 928,297 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,125 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,879,349 |
| "Land" Countries | 0 | - | 4.98 | 337,537 |
| Countries that Produce the Most Beer | 0 | - | 4.85 | 131,261 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,658 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,323 |
| Name a Valid African Country | 0 | - | 4.98 | 154,473 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,205 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,258 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,236 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,098 |
| Countries with Megacities | 0 | - | 4.99 | 265,025 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,911 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,585 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,174 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,660 |
| Countries by Official Language | 0 | - | 4.95 | 195,382 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,553 |
| Countries in their Native Language | 0 | - | 4.99 | 199,169 |
| Independence from Whom | 0 | - | 4.99 | 212,257 |
| Subdivisions by Country | 0 | - | 4.87 | 50,464 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,848 |
| Megadiverse Countries | 0 | - | 4.96 | 135,067 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,207 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,390 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,272 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,131 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,216 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,637 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,564 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,202 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,694 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,169 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,826 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,930 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,245 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,002 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,396 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,526 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,398 |
| World Map Quiz | 0 | - | 4.81 | 65,184 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,631 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,485 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,412 |
| Countries by Founding Story | 0 | - | 4.95 | 77,429 |
| Countries by Road Signs | 0 | - | 4.98 | 54,077 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,224 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,355 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,063 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,421 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,966 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,073 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,353 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,481 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,618 |
| Widest Countries East to West | 0 | - | 4.92 | 129,716 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,472 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,457 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,145 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,814 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,646 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,935 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,398 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,813 |
| Countries with Double Letters | 0 | - | 4.96 | 96,384 |
| Countries that End in N | 0 | - | 4.95 | 171,271 |
| Countries with Five Letters | 0 | - | 4.96 | 282,759 |
| Countries with Six Letters | 0 | - | 4.94 | 213,710 |
| Countries with W | 0 | - | 4.97 | 160,442 |
| Countries with Z | 0 | - | 4.98 | 291,618 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,803 |
| Countries That End in U | 0 | - | 4.95 | 120,900 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,562 |
| Countries that End in O | 0 | - | 4.92 | 159,555 |
| Countries that End in R | 0 | - | 4.87 | 119,003 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,765 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,233 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,763 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,532 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,454 |
| Countries That End in Y | 0 | - | 4.91 | 185,916 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,009 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,931 |
| Countries that End in I | 0 | - | 4.94 | 135,135 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,190 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,857 |
| Countries That End in NIA | 0 | - | 4.92 | 109,834 |
| Countries That End in BIA | 0 | - | 4.93 | 149,271 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,172 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,480 |
| Countries That End in RIA | 0 | - | 4.93 | 126,855 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,073 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,790 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,789 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,220 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,768 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,613 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,078 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,461 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,588 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,459 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,358 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,053 |
| Countries that End in L | 0 | - | 4.94 | 156,888 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,081 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,285 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,068 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,994 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,041 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,876 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,750 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,195 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,906 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,552 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,921 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,127 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,723 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,905 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,837,312 |
| One Border Countries | 0 | - | 4.98 | 470,234 |
| Countries that Beat Australia | 0 | - | 4.92 | 93,077 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,636,348 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,491 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,406 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,771 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 142,969 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,211 |
| Countries that Beat China | 0 | - | 4.85 | 116,203 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,134 |
