| Countries With One Word And Two O's | 0 | - | 4.92 | 56,157 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,623,054 |
| Landlocked Countries | 0 | - | 4.99 | 422,492 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,297 |
| Countries by Emojis | 0 | - | 4.99 | 240,570 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,782,479 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,777 |
| Himalayan Countries | 0 | - | 4.95 | 138,965 |
| Andean Countries | 0 | - | 4.93 | 84,756 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,979 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,040 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,581 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,906 |
| Danube Countries | 0 | - | 4.97 | 72,084 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,104 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,482 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,428 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,907 |
| European Landlocked Countries | 0 | - | 4.99 | 147,210 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,747 |
| Countries with the Most Species | 0 | - | 4.99 | 103,293 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,863 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,627 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,743 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,586 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,294 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,722 |
| Countries in the Alps | 0 | - | 4.87 | 118,289 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,442 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,149 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,708 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,655 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,575 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,993 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,736 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,555 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,210 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,912 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,686 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,562 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,273 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,527 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,589 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,024 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,359 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,380 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,161 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,204 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,281 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,273 |
| Largest Countries By Category | 0 | - | 4.97 | 158,313 |
| Countries by Countries | 0 | - | 4.96 | 63,305 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,760 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,306 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,579 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,074 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,731 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,005 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,653 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,662 |
| Island Countries | 0 | - | 4.99 | 711,219 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,496 |
| Northernmost Countries | 0 | - | 4.99 | 362,213 |
| Countries of South America | 0 | - | 5.00 | 928,079 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,836 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,874 |
| "Land" Countries | 0 | - | 4.98 | 337,480 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,611 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,315 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,882 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,633 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,953 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,995 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,375 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,252 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,038 |
| Countries with Megacities | 0 | - | 4.99 | 264,905 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,864 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,554 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,131 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,626 |
| Countries by Official Language | 0 | - | 4.95 | 195,350 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,513 |
| Countries in their Native Language | 0 | - | 4.99 | 199,142 |
| Independence from Whom | 0 | - | 4.99 | 212,230 |
| Subdivisions by Country | 0 | - | 4.87 | 50,449 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,818 |
| Megadiverse Countries | 0 | - | 4.96 | 135,057 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,190 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,385 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,264 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,125 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,196 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,627 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,541 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,067 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,684 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,162 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,777 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,918 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,230 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,994 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,381 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,517 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,339 |
| World Map Quiz | 0 | - | 4.81 | 65,165 |
| Countries that Produce the Most Beer | 0 | - | 4.85 | 131,244 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,557 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,399 |
| Countries by Founding Story | 0 | - | 4.95 | 77,414 |
| Countries by Road Signs | 0 | - | 4.98 | 54,058 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,191 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,339 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,045 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,358 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,942 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,055 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,337 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,472 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,609 |
| Widest Countries East to West | 0 | - | 4.92 | 129,702 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,469 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,439 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,141 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,800 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,630 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,917 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,394 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,813 |
| Countries with Double Letters | 0 | - | 4.96 | 96,339 |
| Countries that End in N | 0 | - | 4.95 | 171,232 |
| Countries with Five Letters | 0 | - | 4.96 | 282,690 |
| Countries with Six Letters | 0 | - | 4.94 | 213,672 |
| Countries with W | 0 | - | 4.97 | 160,403 |
| Countries with Z | 0 | - | 4.98 | 291,581 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,771 |
| Countries That End in U | 0 | - | 4.95 | 120,884 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,538 |
| Countries that End in O | 0 | - | 4.92 | 159,542 |
| Countries that End in R | 0 | - | 4.87 | 118,988 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,758 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,189 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,745 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,511 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,432 |
| Countries That End in Y | 0 | - | 4.91 | 185,899 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,992 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,910 |
| Countries that End in I | 0 | - | 4.94 | 135,126 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,166 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,845 |
| Countries That End in NIA | 0 | - | 4.92 | 109,819 |
| Countries That End in BIA | 0 | - | 4.93 | 149,247 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,158 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,464 |
| Countries That End in RIA | 0 | - | 4.93 | 126,838 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,051 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,738 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,769 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,197 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,747 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,602 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,065 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,458 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,563 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,452 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,333 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,035 |
| Countries that End in L | 0 | - | 4.94 | 156,875 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,994 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,281 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,054 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,981 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,030 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,837 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,715 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,176 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,891 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,528 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,907 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,124 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,720 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,901 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,529 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,288 |
| Name a Valid African Country | 0 | - | 4.98 | 154,432 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,145 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,999 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,175 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 337,171 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,836,765 |
| One Border Countries | 0 | - | 4.98 | 470,142 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,635,422 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,449 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,500 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,993 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,317 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,232 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,606 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,787 |
