| Countries of the World Quiz | 0 | - | 5.00 | 47,494,805 |
| Landlocked Countries | 0 | - | 4.99 | 420,932 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,770,635 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,963 |
| Himalayan Countries | 0 | - | 4.95 | 138,272 |
| Andean Countries | 0 | - | 4.95 | 84,350 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,578 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,481 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,198 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,614 |
| Danube Countries | 0 | - | 4.97 | 71,886 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,859 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,282 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,076 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,539 |
| European Landlocked Countries | 0 | - | 4.99 | 147,016 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,448 |
| Countries with the Most Species | 0 | - | 4.99 | 103,135 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,586 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,530 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,672 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,465 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,146 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,548 |
| Countries in the Alps | 0 | - | 4.87 | 118,025 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,205 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,810 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,570 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,498 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,368 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,866 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,528 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,386 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,103 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,733 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,581 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,439 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,108 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,376 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,407 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,647 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,206 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,718 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,871 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,403 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,797 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,138 |
| Largest Countries By Category | 0 | - | 4.97 | 157,999 |
| Countries by Countries | 0 | - | 4.96 | 63,071 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,526 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,233 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,528 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,557 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,656 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,181 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,532 |
| Island Countries | 0 | - | 4.99 | 710,597 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,457 |
| Northernmost Countries | 0 | - | 4.99 | 361,452 |
| Countries of South America | 0 | - | 5.00 | 925,703 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,854 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,873,400 |
| "Land" Countries | 0 | - | 4.98 | 336,941 |
| United States Immigration by Country | 0 | - | 4.69 | 160,970 |
| Countries With the Most Expats | 0 | - | 4.69 | 49,514 |
| Countries with the Most Immigrants per Capita | 0 | - | 4.53 | 62,411 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,880 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,605 |
| Countries with Megacities | 0 | - | 4.99 | 263,782 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,455 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,316 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,721 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,362 |
| Countries by Official Language | 0 | - | 4.95 | 195,023 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,081 |
| Countries in their Native Language | 0 | - | 4.99 | 198,530 |
| Independence from Whom | 0 | - | 4.99 | 211,826 |
| Subdivisions by Country | 0 | - | 4.86 | 50,381 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,379 |
| Megadiverse Countries | 0 | - | 4.96 | 134,917 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,887 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,285 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,864 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,072 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,975 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,514 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,299 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,965 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,590 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,048 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,444 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,812 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,126 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,903 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,279 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,434 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,846 |
| World Map Quiz | 0 | - | 4.81 | 64,936 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,634 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,236 |
| Countries by Founding Story | 0 | - | 4.95 | 77,264 |
| Countries by Road Signs | 0 | - | 4.98 | 53,873 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,874 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,147 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,872 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,900 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,781 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,912 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,209 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,385 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,486 |
| Widest Countries East to West | 0 | - | 4.92 | 129,554 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,424 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,238 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,078 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,674 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,460 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,745 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,330 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,775 |
| Countries with Double Letters | 0 | - | 4.97 | 95,882 |
| Countries that End in N | 0 | - | 4.95 | 170,802 |
| Countries with Five Letters | 0 | - | 4.96 | 281,902 |
| Countries with Six Letters | 0 | - | 4.94 | 213,226 |
| Countries with W | 0 | - | 4.97 | 160,080 |
| Countries with Z | 0 | - | 4.98 | 291,077 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,435 |
| Countries That End in U | 0 | - | 4.95 | 120,709 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,209 |
| Countries that End in O | 0 | - | 4.92 | 159,413 |
| Countries that End in R | 0 | - | 4.87 | 118,882 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,653 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,819 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,497 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,343 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,152 |
| Countries That End in Y | 0 | - | 4.91 | 185,797 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,692 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,705 |
| Countries that End in I | 0 | - | 4.94 | 135,018 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,868 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,739 |
| Countries That End in NIA | 0 | - | 4.92 | 109,684 |
| Countries That End in BIA | 0 | - | 4.93 | 149,071 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,965 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,287 |
| Countries That End in RIA | 0 | - | 4.93 | 126,718 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,878 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,274 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,512 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,917 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,489 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,495 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,900 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,405 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,394 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,346 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,126 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,821 |
| Countries that End in L | 0 | - | 4.94 | 156,729 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,082 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,228 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,939 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,870 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,909 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,523 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,489 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,876 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,401 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,131 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,766 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,037 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,659 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,789 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,409 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,498 |
| One Border Countries | 0 | - | 4.98 | 468,868 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,830,505 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,626,155 |
| Countries by Net Migration | 0 | - | 4.52 | 83,895 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,767 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,927 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,977 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,439 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,593 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,114 |
| Countries by National Anthem | 0 | - | 4.93 | 71,256 |
| NATO Countries | 0 | - | 4.98 | 280,714 |
| EU Countries Quiz | 0 | - | 4.99 | 274,584 |
| Recently Independent Countries | 0 | - | 4.98 | 159,316 |
| French-Speaking Countries | 0 | - | 4.85 | 270,615 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,853 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,179 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,645 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,542 |
| German-Speaking Countries | 0 | - | 4.91 | 145,620 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,862 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,205 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,921 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,734 |
