| City to Country Quiz #1 | 0 | - | 4.97 | 155,509 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,292 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,426 |
| Landlocked Countries | 0 | - | 4.99 | 413,606 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,919,462 |
| Historical City to Country | 0 | - | 4.84 | 78,126 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,585 |
| Himalayan Countries | 0 | - | 4.95 | 135,347 |
| Andean Countries | 0 | - | 4.94 | 82,825 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,210 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,209 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,897 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,607 |
| Danube Countries | 0 | - | 4.97 | 71,080 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,763 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,538 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,477 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,396 |
| European Landlocked Countries | 0 | - | 4.99 | 145,751 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,212 |
| Countries with the Most Species | 0 | - | 4.99 | 95,241 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,339 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,197 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,370 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,957 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,576 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,952 |
| Countries in the Alps | 0 | - | 4.86 | 116,820 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,562 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,253 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,006 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,419 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,158 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,002 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,575 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,746 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,291 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,050 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,194 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,042 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,453 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,747 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,751 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,062 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,642 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,254 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,769 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,294 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,673 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,600 |
| Largest Countries By Category | 0 | - | 4.97 | 156,757 |
| Countries by Countries | 0 | - | 4.96 | 62,255 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,384 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,963 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,331 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,764 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,716,646 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,934 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,113 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,844 |
| Island Countries | 0 | - | 4.99 | 707,622 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,435 |
| Northernmost Countries | 0 | - | 4.99 | 357,720 |
| Countries of South America | 0 | - | 5.00 | 914,720 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,414 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,848,308 |
| "Land" Countries | 0 | - | 4.98 | 333,650 |
| City to Country Quiz #2 | 0 | - | 4.79 | 108,101 |
| City to Country Quiz #5 | 0 | - | 4.75 | 80,776 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,269 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,315 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,206 |
| Countries with Megacities | 0 | - | 4.99 | 246,895 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,112 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,963 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,524 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,852 |
| Countries by Official Language | 0 | - | 4.95 | 192,769 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,128 |
| Countries in their Native Language | 0 | - | 4.99 | 196,635 |
| Independence from Whom | 0 | - | 4.99 | 209,688 |
| Subdivisions by Country | 0 | - | 4.86 | 50,064 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,746 |
| Megadiverse Countries | 0 | - | 4.97 | 133,901 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,800 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,918 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,427 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,859 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,656 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,998 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,010 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,142 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,212 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,744 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,569 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,416 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,493 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,503 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,674 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,025 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,585 |
| World Map Quiz | 0 | - | 4.81 | 63,494 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,671 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,330 |
| Countries by Founding Story | 0 | - | 4.95 | 76,537 |
| Countries by Road Signs | 0 | - | 4.98 | 53,099 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,347 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,987 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,951 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,751 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,853 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,059 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,276 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,946 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,336 |
| Widest Countries East to West | 0 | - | 4.92 | 128,603 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,218 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,210 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,563 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,686 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,629 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,039 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,051 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,582 |
| Countries with Double Letters | 0 | - | 4.97 | 93,389 |
| Countries that End in N | 0 | - | 4.94 | 156,858 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,685 |
| Countries with Six Letters | 0 | - | 4.93 | 210,362 |
| Countries with W | 0 | - | 4.97 | 158,225 |
| Countries with Z | 0 | - | 4.98 | 287,875 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,550 |
| Countries That End in U | 0 | - | 4.95 | 119,516 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,550 |
| Countries that End in O | 0 | - | 4.92 | 158,553 |
| Countries that End in R | 0 | - | 4.87 | 118,274 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,857 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,020 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,324 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,493 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,014 |
| Countries That End in Y | 0 | - | 4.90 | 185,203 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,369 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,689 |
| Countries that End in I | 0 | - | 4.94 | 134,411 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,195 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,194 |
| Countries That End in NIA | 0 | - | 4.92 | 109,010 |
| Countries That End in BIA | 0 | - | 4.92 | 147,716 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,060 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,480 |
| Countries That End in RIA | 0 | - | 4.93 | 126,082 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,008 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,190 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,520 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,887 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,355 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,927 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,118 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,644 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,510 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,814 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,137 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,811 |
| Countries that End in L | 0 | - | 4.94 | 155,726 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,183 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,987 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,970 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,090 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,914 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,183 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,379 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,524 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,615 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,172 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,419 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,326 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,057 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,632 |
| One Border Countries | 0 | - | 4.98 | 464,369 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.51 | 22,923 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,801,113 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,588,047 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,841 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,936 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,887 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,486 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,606 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,267 |
| Countries by National Anthem | 0 | - | 4.92 | 71,025 |
| NATO Countries | 0 | - | 4.98 | 275,743 |
| EU Countries Quiz | 0 | - | 4.99 | 269,935 |
| Recently Independent Countries | 0 | - | 4.98 | 157,987 |
| French-Speaking Countries | 0 | - | 4.85 | 268,803 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,378 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,999 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,933 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,313 |
| German-Speaking Countries | 0 | - | 4.89 | 123,506 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,609 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,311 |
