| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 39,928,469 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 311,536 |
| Sahara Desert Countries | 0 | - | 4.98 | 122,635 |
| Himalayan Countries | 0 | - | 4.95 | 100,036 |
| Andean Countries | 0 | - | 4.92 | 55,453 |
| Countries with the Oldest Median Age | 0 | - | 4.88 | 56,382 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 47,618 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 100,623 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 51,963 |
| Danube Countries | 0 | - | 4.97 | 55,910 |
| Countries With an "Ish" Demonym | 0 | - | 4.96 | 90,985 |
| Countries With an "Ese" Demonym | 0 | - | 4.95 | 64,283 |
| Countries with the Worst Passports | 0 | - | 4.88 | 48,117 |
| Countries with the Most Immigrants | 0 | - | 4.84 | 107,350 |
| European Landlocked Countries | 0 | - | 4.99 | 114,087 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,049 |
| Countries with the Most Species | 0 | - | 4.99 | 88,911 |
| Tropic of Cancer Countries | 0 | - | 4.93 | 44,236 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,596 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 46,988 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 58,162 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 48,182 |
| Countries in the Alps | 0 | - | 4.85 | 100,821 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 83,902 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 84,516 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 70,664 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,125 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 92,696 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.88 | 86,406 |
| Five Biggest Countries by Latitude | 0 | - | 4.98 | 88,433 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,368 |
| Biggest Country by Body of Water | 0 | - | 4.97 | 44,772 |
| Countries with the Most Container Port Traffic | 0 | - | 4.93 | 53,631 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.90 | 68,418 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 48,071 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.89 | 36,131 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.91 | 94,398 |
| Countries with the Most Grassland | 0 | - | 4.93 | 68,475 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 95,124 |
| Countries with the Most Climate Zones | 0 | - | 4.95 | 60,568 |
| Countries that Host the Most Refugees | 0 | - | 4.92 | 52,481 |
| All Countries of the World by Area with Hints | 0 | - | 4.96 | 189,287 |
| World Countries - Blind Typing | 0 | - | 5.00 | 69,631 |
| Countries in Their Own Alphabet | 0 | - | 4.94 | 41,597 |
| Largest Countries By Category | 0 | - | 4.97 | 142,758 |
| Countries by Countries | 0 | - | 4.93 | 53,452 |
| Country Flags With Only Two Colors | 0 | - | 4.87 | 76,479 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.93 | 4,956,835 |
| Spanish-Speaking Countries | 0 | - | 4.88 | 336,055 |
| Countries with the Most Tourists Quiz | 0 | - | 4.93 | 347,321 |
| Island Countries Quiz | 0 | - | 4.99 | 632,987 |
| Biggest Countries by Area | 0 | - | 4.99 | 915,666 |
| Northernmost Countries | 0 | - | 4.98 | 323,154 |
| Countries of South America | 0 | - | 5.00 | 772,708 |
| Countries of Oceania | 0 | - | 5.00 | 866,686 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,057,546 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,525,454 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 122,380 |
| Countries with Megacities | 0 | - | 4.99 | 191,990 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 166,894 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 95,710 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 92,042 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 61,628 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 242,175 |
| Countries by Official Language | 0 | - | 4.94 | 152,161 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.89 | 243,108 |
| Countries in their Native Language | 0 | - | 4.97 | 175,450 |
| Independence from Whom | 0 | - | 4.99 | 180,592 |
| Subdivisions by Country | 0 | - | 4.84 | 45,937 |
| Who Controlled These Colonies? | 0 | - | 4.84 | 110,152 |
| Megadiverse Countries | 0 | - | 4.94 | 123,932 |
| Countries With the Most English Speakers | 0 | - | 4.84 | 88,424 |
| Countries with Multiple Big Islands | 0 | - | 4.89 | 105,405 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.85 | 46,850 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 128,793 |
| Most Recently-Settled Countries | 0 | - | 4.89 | 48,030 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 75,082 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.96 | 143,404 |
| Countries with Multiple Populous Islands | 0 | - | 4.83 | 76,017 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 40,670 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 41,956 |
| Landmarks of Countries #1 | 0 | - | 4.82 | 100,357 |
| Countries Furthest from the United States | 0 | - | 4.89 | 70,800 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,270 |
| Straight Shot to the Arctic Circle | 0 | - | 4.90 | 57,196 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,281 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 78,004 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 79,931 |
| Southernmost Countries of the World | 0 | - | 4.99 | 203,031 |
| Countries by Inland Surface Water | 0 | - | 4.95 | 89,200 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 105,964 |
| Countries With the Most Languages | 0 | - | 4.90 | 169,451 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.94 | 85,954 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.82 | 70,065 |
| Countries with the Most Prisoners | 0 | - | 4.91 | 84,464 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 52,572 |
| Widest Countries East to West | 0 | - | 4.91 | 117,791 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,500 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 156,528 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 91,713 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.95 | 84,062 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 116,878 |
| Countries with the Most Desert | 0 | - | 4.91 | 103,548 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 66,052 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.85 | 31,631 |
| Countries with Double Letters | 0 | - | 4.96 | 64,767 |
| Countries that End in N | 0 | - | 4.94 | 129,418 |
| Countries with Five Letters Quiz | 0 | - | 4.95 | 225,512 |
| Countries with Six Letters Quiz | 0 | - | 4.93 | 171,553 |
| Countries with W | 0 | - | 4.97 | 120,094 |
| Countries with Z | 0 | - | 4.98 | 240,067 |
| Countries with Letters Missing | 0 | - | 4.98 | 153,008 |
| Countries That End in U | 0 | - | 4.93 | 105,939 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 86,729 |
| Countries that End in O | 0 | - | 4.90 | 145,669 |
| Countries that End in R | 0 | - | 4.85 | 95,667 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,349 |
| Countries Ending in "IA" | 0 | - | 4.99 | 168,036 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 153,932 |
| Countries by Last Two Letters | 0 | - | 4.89 | 114,516 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 127,671 |
| Countries That End in Y | 0 | - | 4.89 | 160,336 |
| Countries Based on First Two Letters #1 | 0 | - | 4.98 | 158,398 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.89 | 118,926 |
| Countries that End in I | 0 | - | 4.90 | 113,748 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 147,263 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.97 | 86,960 |
| Countries That End in NIA | 0 | - | 4.91 | 99,694 |
| Countries That End in BIA | 0 | - | 4.91 | 124,498 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.91 | 151,240 |
| Countries Whose Names Start with Saint | 0 | - | 4.82 | 108,352 |
| Countries That End in RIA | 0 | - | 4.83 | 99,513 |
| Most Common Words in Official Country Names | 0 | - | 4.84 | 99,043 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 196,517 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 117,531 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 108,185 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 75,176 |
| Countries with a Unique Last Letter | 0 | - | 4.92 | 90,734 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 95,034 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 38,854 |
| Countries that End in L | 0 | - | 4.94 | 132,553 |
| "Land" Countries | 0 | - | 4.98 | 286,066 |
| "Stan" Countries Quiz | 0 | - | 4.96 | 186,305 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.97 | 64,935 |
| City to Country Quiz #1 | 0 | - | 4.93 | 133,166 |
| City to Country Quiz #3 | 0 | - | 4.85 | 98,955 |
| 45 European Countries, 45 Cities | 0 | - | 4.96 | 70,511 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 204,696 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 155,971 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 114,992 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 130,622 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 190,752 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 138,940 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.85 | 65,109 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.85 | 90,911 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 81,379 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 54,840 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,291,595 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 345,482 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,003,966 |
| One Border Countries | 0 | - | 4.97 | 403,332 |
| Countries With One Word and Three A's | 0 | - | 4.88 | 29,591 |
| Top-Producing Countries | 0 | - | 4.61 | 99,265 |
| Country Codes Quiz | 0 | - | 4.42 | 76,212 |
| Countries on the Equator | 0 | - | 4.80 | 122,078 |
| Members of the Arab League | 0 | - | 4.69 | 58,279 |
| Coffee Producing Countries | 0 | - | 4.76 | 53,338 |
| Separatist Movements | 0 | - | 4.41 | 42,080 |
| Countries with the Best Passports | 0 | - | 4.79 | 69,529 |
| Prime Meridian Countries | 0 | - | 4.50 | 51,553 |
| Next Country Alphabetically | 0 | - | 4.60 | 67,916 |
| Countries 197 to 205 | 0 | - | 4.76 | 55,320 |
| Easternmost Countries | 0 | - | 4.63 | 60,029 |
| Countries that Use the Peso | 0 | - | 4.80 | 45,836 |
| Countries With the Most ISIS Fighters | 0 | - | 4.60 | 36,603 |
| Top 10 Most Famous Island Countries | 0 | - | 4.68 | 96,952 |
| Indochina Countries | 0 | - | 4.75 | 62,199 |
| Atlantic Ocean Island Countries | 0 | - | 4.49 | 46,677 |
| Countries With the Most Conflict Deaths | 0 | - | 4.60 | 89,962 |
| Highest Foreign Aid Recipients | 0 | - | 4.63 | 42,068 |
| Pacific Ocean Island Countries | 0 | - | 4.47 | 54,697 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.63 | 45,526 |
| Countries that are the Source of Refugees | 0 | - | 4.63 | 55,738 |
| Most Populous Countries By Category | 0 | - | 4.45 | 60,587 |
| Countries with the Most Turkic People | 0 | - | 4.68 | 41,420 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.62 | 44,207 |
| Flyover Countries | 0 | - | 4.45 | 35,412 |
| Top 50 Countries by Area - In Order | 0 | - | 4.62 | 65,665 |
| Countries with the Most Coral Reefs | 0 | - | 4.60 | 37,048 |
| Countries Without a U.S. Embassy | 0 | - | 4.56 | 41,299 |
| Countries by Total Area of Bordering Countries | 0 | - | 4.69 | 48,680 |
| Countries with the Most Light Pollution | 0 | - | 4.50 | 43,650 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,315,471 |
| Boundary Waters | 0 | - | 4.92 | 80,049 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 72,902 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 64,598 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 241,714 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 107,382 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,020 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 63,764 |
