| Countries of Europe Quiz | 0 | - | 5.00 | 3,767,149 |
| Countries of South America | 0 | - | 5.00 | 924,983 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,904 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,690 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,453,360 |
| Landlocked Countries | 0 | - | 4.99 | 420,446 |
| Countries with Four Letters | 0 | - | 4.99 | 422,415 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,676 |
| Himalayan Countries | 0 | - | 4.95 | 138,065 |
| Andean Countries | 0 | - | 4.95 | 84,253 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,476 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,304 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,110 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,552 |
| Danube Countries | 0 | - | 4.97 | 71,826 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,779 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,226 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,956 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,401 |
| European Landlocked Countries | 0 | - | 4.99 | 146,958 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,368 |
| Countries with the Most Species | 0 | - | 4.99 | 103,085 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,526 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,497 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,657 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,439 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,112 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,499 |
| Countries in the Alps | 0 | - | 4.87 | 117,951 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,271 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,684 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,545 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,443 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,298 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,830 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,462 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,335 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,069 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,698 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,562 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,418 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,065 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,343 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,360 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,512 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,177 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,685 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,809 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,137 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,652 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,103 |
| Largest Countries By Category | 0 | - | 4.97 | 157,914 |
| Countries by Countries | 0 | - | 4.97 | 63,004 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,456 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,213 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,506 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,495 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,023,219 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,894 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,516 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,506 |
| Bordering Countries Beginning With the Same Letter | 0 | - | 4.99 | 139,597 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 216,727 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,227 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,021 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,185 |
| Island Countries | 0 | - | 4.99 | 710,359 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,775 |
| Northernmost Countries | 0 | - | 4.99 | 361,195 |
| "Land" Countries | 0 | - | 4.98 | 336,264 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,470 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 237,162 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,447 |
| Countries with Megacities | 0 | - | 4.99 | 263,343 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,285 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,236 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,581 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,276 |
| Countries by Official Language | 0 | - | 4.95 | 194,922 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,933 |
| Countries in their Native Language | 0 | - | 4.99 | 198,447 |
| Independence from Whom | 0 | - | 4.99 | 211,697 |
| Subdivisions by Country | 0 | - | 4.86 | 50,359 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,973 |
| Megadiverse Countries | 0 | - | 4.96 | 134,877 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,784 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,252 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,843 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,058 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,901 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,473 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,212 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,934 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,561 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,040 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,329 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,791 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,092 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,865 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,253 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,411 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,647 |
| World Map Quiz | 0 | - | 4.81 | 64,855 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,385 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,188 |
| Countries by Founding Story | 0 | - | 4.95 | 77,213 |
| Countries by Road Signs | 0 | - | 4.98 | 53,821 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,773 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,086 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,824 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,762 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,710 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,846 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,039 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,350 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,429 |
| Widest Countries East to West | 0 | - | 4.92 | 129,497 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,415 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,160 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,061 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,638 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,405 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,699 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,310 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,763 |
| Countries with Double Letters | 0 | - | 4.97 | 95,386 |
| Countries that End in N | 0 | - | 4.95 | 170,426 |
| Countries with Five Letters | 0 | - | 4.96 | 281,356 |
| Countries with Six Letters | 0 | - | 4.94 | 212,832 |
| Countries with W | 0 | - | 4.97 | 159,728 |
| Countries with Z | 0 | - | 4.98 | 290,640 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,989 |
| Countries That End in U | 0 | - | 4.95 | 120,524 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,008 |
| Countries that End in O | 0 | - | 4.92 | 159,291 |
| Countries that End in R | 0 | - | 4.87 | 118,809 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,578 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,616 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,333 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,223 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,838 |
| Countries That End in Y | 0 | - | 4.91 | 185,728 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,539 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,619 |
| Countries that End in I | 0 | - | 4.94 | 134,958 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,735 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,671 |
| Countries That End in NIA | 0 | - | 4.92 | 109,632 |
| Countries That End in BIA | 0 | - | 4.93 | 148,983 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,883 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,210 |
| Countries That End in RIA | 0 | - | 4.93 | 126,652 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,779 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,107 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,420 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,810 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,343 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,416 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,802 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,360 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,301 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,288 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,008 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,719 |
| Countries that End in L | 0 | - | 4.94 | 156,661 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,800 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,191 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,911 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,824 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,878 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,422 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,400 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,810 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,337 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,843 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,718 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,017 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,642 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,763 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,605 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,316 |
| One Border Countries | 0 | - | 4.98 | 468,576 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,828,757 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,622,854 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,679 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,373 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,716 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,789 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,900 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,390 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,535 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,079 |
| Countries by National Anthem | 0 | - | 4.93 | 71,238 |
| NATO Countries | 0 | - | 4.98 | 280,379 |
| EU Countries Quiz | 0 | - | 4.99 | 274,201 |
| Recently Independent Countries | 0 | - | 4.98 | 159,231 |
| French-Speaking Countries | 0 | - | 4.85 | 270,493 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,823 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,029 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,335 |
