| Countries of the World Quiz | 0 | - | 5.00 | 47,277,518 |
| Landlocked Countries | 0 | - | 4.99 | 418,113 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,640 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,772 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,751,783 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,574 |
| Himalayan Countries | 0 | - | 4.94 | 137,069 |
| Andean Countries | 0 | - | 4.95 | 83,751 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,999 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,376 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,670 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,245 |
| Danube Countries | 0 | - | 4.97 | 71,570 |
| 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 | 83,498 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,552 |
| European Landlocked Countries | 0 | - | 4.99 | 146,676 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,007 |
| Countries with the Most Species | 0 | - | 4.99 | 102,769 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,150 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,394 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,556 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,254 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,924 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,306 |
| Countries in the Alps | 0 | - | 4.87 | 117,570 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,046 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,207 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,364 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,900 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,012 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,389 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,174 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,119 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,921 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,483 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,441 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,300 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,864 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,125 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,149 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,013 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,001 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,524 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,413 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,921 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,037 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,932 |
| Largest Countries By Category | 0 | - | 4.97 | 157,518 |
| Countries by Countries | 0 | - | 4.96 | 62,766 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,096 |
| 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 | 88,250 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,252 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,377 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,685 |
| Island Countries | 0 | - | 4.99 | 709,413 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,149 |
| Northernmost Countries | 0 | - | 4.99 | 360,116 |
| Countries of South America | 0 | - | 5.00 | 921,894 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,763 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,863,886 |
| "Land" Countries | 0 | - | 4.98 | 335,598 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,957 |
| Orthodox Countries | 0 | - | 4.92 | 131,179 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,887 |
| Battle to Country | 0 | - | 4.91 | 53,075 |
| Monarchies of Europe | 0 | - | 4.90 | 97,875 |
| 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 | 111,361 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,736 |
| Countries with Megacities | 0 | - | 4.99 | 249,893 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,575 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,822 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,890 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,816 |
| Countries by Official Language | 0 | - | 4.95 | 194,484 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,327 |
| Countries in their Native Language | 0 | - | 4.99 | 198,053 |
| Independence from Whom | 0 | - | 4.99 | 211,155 |
| Subdivisions by Country | 0 | - | 4.86 | 50,256 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,581 |
| Megadiverse Countries | 0 | - | 4.96 | 134,710 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,177 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,149 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,709 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,992 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,627 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,325 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,853 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,778 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,451 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,940 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,723 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,668 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,909 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,741 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,074 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,282 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,441 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,962 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 120,798 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,636 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,973 |
| World Map Quiz | 0 | - | 4.81 | 64,388 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,171 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,951 |
| Countries by Founding Story | 0 | - | 4.95 | 76,995 |
| Countries by Road Signs | 0 | - | 4.98 | 53,580 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,344 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,842 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,561 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,106 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,442 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,620 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,763 |
| 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 | 185,855 |
| 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 | 94,458 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,135 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,478 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,205 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,711 |
| Countries with Double Letters | 0 | - | 4.97 | 94,942 |
| Countries that End in N | 0 | - | 4.95 | 169,608 |
| Countries with Five Letters | 0 | - | 4.96 | 278,880 |
| Countries with Six Letters | 0 | - | 4.94 | 212,286 |
| Countries with W | 0 | - | 4.97 | 159,405 |
| Countries with Z | 0 | - | 4.98 | 289,624 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,618 |
| Countries That End in U | 0 | - | 4.95 | 120,354 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,634 |
| Countries that End in O | 0 | - | 4.92 | 159,148 |
| Countries that End in R | 0 | - | 4.87 | 118,687 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,470 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,187 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,023 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,027 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,607 |
| Countries That End in Y | 0 | - | 4.90 | 185,605 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,123 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,333 |
| Countries that End in I | 0 | - | 4.94 | 134,822 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,972 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,537 |
| Countries That End in NIA | 0 | - | 4.92 | 109,458 |
| Countries That End in BIA | 0 | - | 4.93 | 148,773 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,629 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,989 |
| Countries That End in RIA | 0 | - | 4.93 | 126,467 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,562 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,492 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,118 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,456 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,023 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,272 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,604 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,164 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,049 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,159 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,741 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,444 |
| Countries that End in L | 0 | - | 4.94 | 156,485 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,698 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,142 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,798 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,669 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,721 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,620 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,041 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,539 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,012 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,492 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,498 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,922 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,800 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,702 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,339 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,782 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,574 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,610 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,154 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,435 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,819,723 |
| One Border Countries | 0 | - | 4.98 | 467,271 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,611,436 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,682 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,238 |
| Countries of the World in Plague Inc. | 0 | - | 4.53 | 29,885 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 82,959 |
| Top 10 Richest Countries in Africa | 0 | - | 4.86 | 75,696 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,057 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,571 |
