| Countries of the World Quiz | 0 | - | 5.00 | 47,276,244 |
| Landlocked Countries | 0 | - | 4.99 | 418,098 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,637 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,771 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,751,659 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,572 |
| Himalayan Countries | 0 | - | 4.94 | 137,058 |
| Andean Countries | 0 | - | 4.95 | 83,749 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,997 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,372 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,669 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,240 |
| Danube Countries | 0 | - | 4.97 | 71,569 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,428 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,978 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,496 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,550 |
| European Landlocked Countries | 0 | - | 4.99 | 146,676 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,007 |
| Countries with the Most Species | 0 | - | 4.99 | 102,763 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,146 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,392 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,555 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,253 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,923 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,306 |
| Countries in the Alps | 0 | - | 4.87 | 117,564 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,045 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,205 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,363 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,899 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,009 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,389 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,171 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,119 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,920 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,482 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,439 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,300 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,862 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,124 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,149 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,010 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,000 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,523 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,412 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,915 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,030 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,931 |
| Largest Countries By Category | 0 | - | 4.97 | 157,515 |
| Countries by Countries | 0 | - | 4.96 | 62,765 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,093 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,133 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,452 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,248 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,235 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,375 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,676 |
| Island Countries | 0 | - | 4.99 | 709,400 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,129 |
| Northernmost Countries | 0 | - | 4.99 | 360,110 |
| Countries of South America | 0 | - | 5.00 | 921,877 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,736 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,863,841 |
| "Land" Countries | 0 | - | 4.98 | 335,590 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,954 |
| Orthodox Countries | 0 | - | 4.92 | 131,177 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,854 |
| Battle to Country | 0 | - | 4.91 | 53,075 |
| Monarchies of Europe | 0 | - | 4.90 | 97,872 |
| Monarchies of Asia | 0 | - | 4.97 | 70,925 |
| Asian Country Superlatives | 0 | - | 4.85 | 80,743 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,358 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,731 |
| Countries with Megacities | 0 | - | 4.99 | 249,878 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,570 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,818 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,885 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,809 |
| Countries by Official Language | 0 | - | 4.95 | 194,480 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,320 |
| Countries in their Native Language | 0 | - | 4.99 | 198,046 |
| Independence from Whom | 0 | - | 4.99 | 211,152 |
| Subdivisions by Country | 0 | - | 4.86 | 50,255 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,577 |
| Megadiverse Countries | 0 | - | 4.96 | 134,710 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,176 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,148 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,707 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,992 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,626 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,323 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,852 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,777 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,450 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,939 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,716 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,665 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,908 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,740 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,074 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,281 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,436 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,961 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 120,784 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,634 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,967 |
| World Map Quiz | 0 | - | 4.81 | 64,388 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,163 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,949 |
| Countries by Founding Story | 0 | - | 4.95 | 76,995 |
| Countries by Road Signs | 0 | - | 4.98 | 53,578 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,336 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,840 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,559 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,102 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,442 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,619 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,762 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,221 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,221 |
| Widest Countries East to West | 0 | - | 4.92 | 129,289 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,368 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,852 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,974 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,454 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,133 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,477 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,204 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,710 |
| Countries with Double Letters | 0 | - | 4.97 | 94,940 |
| Countries that End in N | 0 | - | 4.95 | 169,599 |
| Countries with Five Letters | 0 | - | 4.96 | 278,838 |
| Countries with Six Letters | 0 | - | 4.94 | 212,282 |
| Countries with W | 0 | - | 4.97 | 159,403 |
| Countries with Z | 0 | - | 4.98 | 289,618 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,613 |
| Countries That End in U | 0 | - | 4.95 | 120,353 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,627 |
| Countries that End in O | 0 | - | 4.92 | 159,148 |
| Countries that End in R | 0 | - | 4.87 | 118,684 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,469 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,183 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,020 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,024 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,602 |
| Countries That End in Y | 0 | - | 4.90 | 185,605 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,119 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,332 |
| Countries that End in I | 0 | - | 4.94 | 134,822 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,963 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,535 |
| Countries That End in NIA | 0 | - | 4.92 | 109,457 |
| Countries That End in BIA | 0 | - | 4.93 | 148,772 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,628 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,986 |
| Countries That End in RIA | 0 | - | 4.93 | 126,466 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,561 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,488 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,117 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,454 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,021 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,271 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,604 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,163 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,047 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,158 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,740 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,442 |
| Countries that End in L | 0 | - | 4.94 | 156,484 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,688 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,139 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,798 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,668 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,719 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,616 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,039 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,538 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,011 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,489 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,495 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,920 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,798 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,699 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,339 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,780 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,573 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,608 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,139 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,431 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,819,659 |
| One Border Countries | 0 | - | 4.98 | 467,265 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,611,384 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,677 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,234 |
| Countries of the World in Plague Inc. | 0 | - | 4.53 | 29,883 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 82,951 |
| Top 10 Richest Countries in Africa | 0 | - | 4.86 | 75,695 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,053 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,570 |
