| Countries of the World Quiz | 0 | - | 5.00 | 47,966,151 |
| Landlocked Countries | 0 | - | 4.99 | 427,214 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,044 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,812,087 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,896 |
| Himalayan Countries | 0 | - | 4.93 | 140,807 |
| Andean Countries | 0 | - | 4.94 | 85,794 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,910 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,477 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,460 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,685 |
| Danube Countries | 0 | - | 4.97 | 72,547 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,795 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,970 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,432 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,910 |
| European Landlocked Countries | 0 | - | 4.99 | 147,736 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,530 |
| Countries with the Most Species | 0 | - | 4.99 | 103,643 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,632 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,812 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,951 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,923 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,678 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,125 |
| Countries in the Alps | 0 | - | 4.87 | 118,968 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,979 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,124 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,053 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,169 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,125 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,387 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,587 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,987 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,512 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,309 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,951 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,829 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,669 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,923 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,019 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,141 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,730 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 136,268 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,416 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,832 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,281 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,484 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,614 |
| Largest Countries By Category | 0 | - | 4.97 | 159,082 |
| Countries by Countries | 0 | - | 4.97 | 63,799 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,435 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,448 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,704 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,224 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,582 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,029 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,340 |
| Island Countries | 0 | - | 4.99 | 713,001 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,937 |
| 20 Random Country Flags | 0 | - | 4.99 | 620,277 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,119 |
| Northernmost Countries | 0 | - | 4.99 | 364,580 |
| Countries of South America | 0 | - | 5.00 | 934,220 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,438 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,888 |
| "Land" Countries | 0 | - | 4.98 | 338,986 |
| Countries that Produce the Most Beer | 0 | - | 4.85 | 131,882 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,315 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,935 |
| Name a Valid African Country | 0 | - | 4.98 | 155,239 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,966 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,962 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,485 |
| Countries with Megacities | 0 | - | 4.99 | 267,823 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,137 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,334 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,465 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,430 |
| Countries by Official Language | 0 | - | 4.95 | 196,211 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,933 |
| Countries in their Native Language | 0 | - | 4.99 | 199,949 |
| Independence from Whom | 0 | - | 4.99 | 213,394 |
| Subdivisions by Country | 0 | - | 4.87 | 50,664 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,657 |
| Megadiverse Countries | 0 | - | 4.96 | 148,965 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,132 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,575 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,802 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,257 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,465 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,925 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,273 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,623 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,162 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,286 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,759 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,486 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,506 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,216 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,638 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,973 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,716 |
| World Map Quiz | 0 | - | 4.81 | 65,924 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,876 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,813 |
| Countries by Founding Story | 0 | - | 4.95 | 77,904 |
| Countries by Road Signs | 0 | - | 4.98 | 54,445 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,507 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,231 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,703 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,924 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,546 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,662 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,847 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,763 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,937 |
| Widest Countries East to West | 0 | - | 4.92 | 130,848 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,627 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,397 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,560 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,157 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,106 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,613 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,534 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,922 |
| Political Movements by Country | 0 | - | 4.46 | 72,820 |
| Countries with Double Letters | 0 | - | 4.96 | 97,617 |
| Countries that End in N | 0 | - | 4.95 | 172,623 |
| Countries with Five Letters | 0 | - | 4.96 | 284,625 |
| Countries with Six Letters | 0 | - | 4.94 | 214,950 |
| Countries with W | 0 | - | 4.96 | 161,302 |
| Countries with Z | 0 | - | 4.98 | 292,989 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,663 |
| Countries That End in U | 0 | - | 4.95 | 121,389 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,422 |
| Countries that End in O | 0 | - | 4.92 | 160,369 |
| Countries that End in R | 0 | - | 4.87 | 119,276 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,061 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,143 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 185,575 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,190 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,742 |
| Countries That End in Y | 0 | - | 4.91 | 186,174 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,253 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,417 |
| Countries that End in I | 0 | - | 4.94 | 135,422 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,248 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,144 |
| Countries That End in NIA | 0 | - | 4.92 | 110,158 |
| Countries That End in BIA | 0 | - | 4.93 | 149,734 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,929 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,902 |
| Countries That End in RIA | 0 | - | 4.93 | 127,143 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,543 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,934 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,385 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,848 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,401 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,919 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,456 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,604 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,051 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,732 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,904 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,609 |
| Countries that End in L | 0 | - | 4.94 | 157,246 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,576 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,379 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,882 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,155 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,541 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,655 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,306 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,520 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,407 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,189 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,318 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,296 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,969 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,873 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,361 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,853,106 |
| One Border Countries | 0 | - | 4.98 | 472,561 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,659,425 |
| Countries that Beat Australia | 0 | - | 4.92 | 93,549 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,463 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,513 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,810 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,992 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,356 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,716 |
| Resort Towns by Country | 0 | - | 4.30 | 40,099 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,365 |
| Countries by National Anthem | 0 | - | 4.92 | 71,434 |
| NATO Countries | 0 | - | 4.98 | 283,966 |
| EU Countries Quiz | 0 | - | 4.99 | 278,862 |
| Recently Independent Countries | 0 | - | 4.98 | 160,503 |
| French-Speaking Countries | 0 | - | 4.85 | 271,873 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,239 |
