| Countries of the World Quiz | 0 | - | 5.00 | 47,374,634 |
| Landlocked Countries | 0 | - | 4.99 | 419,481 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,935 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,003 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,760,239 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,213 |
| Himalayan Countries | 0 | - | 4.95 | 137,655 |
| Andean Countries | 0 | - | 4.95 | 84,056 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,301 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,803 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,920 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,419 |
| Danube Countries | 0 | - | 4.97 | 71,722 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,638 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,114 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,745 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,821 |
| European Landlocked Countries | 0 | - | 4.99 | 146,835 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,205 |
| Countries with the Most Species | 0 | - | 4.99 | 102,980 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,361 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,442 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,609 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,346 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,021 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,415 |
| Countries in the Alps | 0 | - | 4.87 | 117,770 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,196 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,479 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,453 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,056 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,162 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,757 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,349 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,241 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,004 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,601 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,513 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,362 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,970 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,238 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,256 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,289 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,096 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,599 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,622 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,616 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,363 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,026 |
| Largest Countries By Category | 0 | - | 4.97 | 157,743 |
| Countries by Countries | 0 | - | 4.96 | 62,894 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,285 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,173 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,480 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,718 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,694 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,383 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,465 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,751 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,405 |
| Island Countries | 0 | - | 4.99 | 709,993 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,653 |
| Northernmost Countries | 0 | - | 4.99 | 360,734 |
| Countries of South America | 0 | - | 5.00 | 923,696 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,134 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,868,298 |
| "Land" Countries | 0 | - | 4.98 | 335,925 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,217 |
| Orthodox Countries | 0 | - | 4.92 | 131,417 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,968 |
| Battle to Country | 0 | - | 4.91 | 53,225 |
| Monarchies of Europe | 0 | - | 4.90 | 98,020 |
| Monarchies of Asia | 0 | - | 4.97 | 71,022 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,810 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,575 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,173 |
| Countries with Megacities | 0 | - | 4.99 | 261,906 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,034 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,080 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,333 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,115 |
| Countries by Official Language | 0 | - | 4.95 | 194,748 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,676 |
| Countries in their Native Language | 0 | - | 4.99 | 198,284 |
| Independence from Whom | 0 | - | 4.99 | 211,460 |
| Subdivisions by Country | 0 | - | 4.86 | 50,309 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,802 |
| Megadiverse Countries | 0 | - | 4.96 | 134,805 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,622 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,209 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,781 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,031 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,766 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,416 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,052 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,876 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,517 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,006 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,113 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,746 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,022 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,808 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,183 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,357 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,173 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,472 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 133,428 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,047 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,346 |
| World Map Quiz | 0 | - | 4.81 | 64,684 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,854 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,084 |
| Countries by Founding Story | 0 | - | 4.95 | 77,116 |
| Countries by Road Signs | 0 | - | 4.98 | 53,704 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,625 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,998 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,717 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,496 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,590 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,735 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,878 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,301 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,333 |
| Widest Countries East to West | 0 | - | 4.92 | 129,419 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,399 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,016 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,012 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,560 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,285 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,607 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,259 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,736 |
| Countries with Double Letters | 0 | - | 4.97 | 95,174 |
| Countries that End in N | 0 | - | 4.95 | 170,170 |
| Countries with Five Letters | 0 | - | 4.96 | 280,789 |
| Countries with Six Letters | 0 | - | 4.94 | 212,606 |
| Countries with W | 0 | - | 4.97 | 159,580 |
| Countries with Z | 0 | - | 4.98 | 289,927 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,815 |
| Countries That End in U | 0 | - | 4.95 | 120,438 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,830 |
| Countries that End in O | 0 | - | 4.92 | 159,227 |
| Countries that End in R | 0 | - | 4.87 | 118,754 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,531 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,431 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,172 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,127 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,719 |
| Countries That End in Y | 0 | - | 4.91 | 185,669 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,323 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,489 |
| Countries that End in I | 0 | - | 4.94 | 134,901 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,174 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,605 |
| Countries That End in NIA | 0 | - | 4.92 | 109,544 |
| Countries That End in BIA | 0 | - | 4.93 | 148,890 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,781 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,109 |
| Countries That End in RIA | 0 | - | 4.93 | 126,568 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,691 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,847 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,294 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,675 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,209 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,362 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,721 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,289 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,187 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,228 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,896 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,603 |
| Countries that End in L | 0 | - | 4.94 | 156,577 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,270 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,163 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,867 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,753 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,807 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,883 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,252 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,689 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,193 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,690 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,623 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,974 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,014 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,871 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,912 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,611 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,700 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,109 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,920 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,824,700 |
| One Border Countries | 0 | - | 4.98 | 467,985 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,617,812 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,909 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,313 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,696 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,197 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,576 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,752 |
