| Countries of Europe Quiz | 0 | - | 5.00 | 3,812,998 |
| Countries of South America | 0 | - | 5.00 | 934,369 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,657 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,293 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,975,726 |
| Landlocked Countries | 0 | - | 4.99 | 427,314 |
| Countries with the Most Borders | 0 | - | 4.97 | 391,082 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,977 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,583 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,870 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,903 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 91,061 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,953 |
| Himalayan Countries | 0 | - | 4.93 | 140,856 |
| Andean Countries | 0 | - | 4.94 | 85,817 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,931 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,511 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,476 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,702 |
| Danube Countries | 0 | - | 4.97 | 72,564 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,808 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,977 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,459 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,929 |
| European Landlocked Countries | 0 | - | 4.99 | 147,773 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,548 |
| Countries with the Most Species | 0 | - | 4.99 | 103,653 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,650 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,817 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,957 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,929 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,683 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,139 |
| Countries in the Alps | 0 | - | 4.87 | 118,987 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,018 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,146 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,058 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,181 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,132 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,395 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,603 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,999 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,517 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,319 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,955 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,832 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,681 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,933 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,027 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,157 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,741 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,514 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,849 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,342 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,516 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,620 |
| Largest Countries By Category | 0 | - | 4.97 | 159,103 |
| Countries by Countries | 0 | - | 4.97 | 63,815 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,459 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,451 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,706 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,560 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,238 |
| Countries with the Shortest Total Borders | 0 | - | 4.94 | 104,585 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,033,320 |
| Monarchies Bordering Monarchies | 0 | - | 4.81 | 60,635 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,681 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,063 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,408 |
| Island Countries | 0 | - | 4.99 | 713,034 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,265 |
| Northernmost Countries | 0 | - | 4.99 | 364,634 |
| "Land" Countries | 0 | - | 4.98 | 339,034 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.86 | 23,901 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 228,157 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,345 |
| European Countries with One Border | 0 | - | 4.97 | 184,029 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,737 |
| Random Countries by Borders | 0 | - | 4.99 | 83,204 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,520 |
| Countries with Megacities | 0 | - | 4.99 | 267,910 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,176 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,350 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,502 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,451 |
| Countries by Official Language | 0 | - | 4.95 | 196,239 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,968 |
| Countries in their Native Language | 0 | - | 4.99 | 199,971 |
| Independence from Whom | 0 | - | 4.99 | 213,423 |
| Subdivisions by Country | 0 | - | 4.87 | 50,671 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,677 |
| Megadiverse Countries | 0 | - | 4.96 | 149,225 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,144 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,583 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,813 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,262 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,485 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,925 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,293 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,631 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,171 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,288 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,799 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,492 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,511 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,222 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,648 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,981 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,759 |
| World Map Quiz | 0 | - | 4.81 | 65,933 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,939 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,824 |
| Countries by Founding Story | 0 | - | 4.95 | 77,917 |
| Countries by Road Signs | 0 | - | 4.98 | 54,455 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,537 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,245 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,715 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,961 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,566 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,672 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,863 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,767 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,955 |
| Widest Countries East to West | 0 | - | 4.92 | 130,863 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,630 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,414 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,568 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,167 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,126 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,622 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,538 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,923 |
| Countries with Double Letters | 0 | - | 4.96 | 97,664 |
| Countries that End in N | 0 | - | 4.95 | 172,655 |
| Countries with Five Letters | 0 | - | 4.96 | 284,687 |
| Countries with Six Letters | 0 | - | 4.94 | 214,987 |
| Countries with W | 0 | - | 4.96 | 161,335 |
| Countries with Z | 0 | - | 4.98 | 293,044 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,696 |
| Countries That End in U | 0 | - | 4.95 | 121,402 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,451 |
| Countries that End in O | 0 | - | 4.92 | 160,379 |
| Countries that End in R | 0 | - | 4.87 | 119,284 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,066 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,177 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 186,313 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,217 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,834 |
| Countries That End in Y | 0 | - | 4.91 | 186,179 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,343 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,435 |
| Countries that End in I | 0 | - | 4.94 | 135,434 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,318 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,151 |
| Countries That End in NIA | 0 | - | 4.92 | 110,164 |
| Countries That End in BIA | 0 | - | 4.93 | 149,747 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,948 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,917 |
| Countries That End in RIA | 0 | - | 4.93 | 127,159 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,554 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,974 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,406 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,872 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,425 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,931 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,470 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,613 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,070 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,741 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,922 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,634 |
| Countries that End in L | 0 | - | 4.94 | 157,257 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,626 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,383 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,895 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,164 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,549 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,679 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,320 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,533 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,423 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,202 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,325 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,301 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,973 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,879 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,368 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,168 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,006 |
| One Border Countries | 0 | - | 4.98 | 472,626 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 389,006 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,404 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,853,665 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,669 |
| Richest Countries Bordering Each Other | 0 | - | 4.99 | 155,043 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.86 | 89,540 |
| Rich Countries Bordering Poor Countries | 0 | - | 4.89 | 100,717 |
| Bordering Countries with the Largest GDPs | 0 | - | 4.97 | 76,756 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,660,171 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,761 |
