| Countries of Europe Quiz | 0 | - | 5.00 | 3,711,823 |
| Countries of South America | 0 | - | 5.00 | 913,830 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,197 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,224 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,603 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,873,748 |
| Landlocked Countries | 0 | - | 4.99 | 413,109 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,359 |
| Himalayan Countries | 0 | - | 4.95 | 135,144 |
| Andean Countries | 0 | - | 4.94 | 82,719 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,140 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,064 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,807 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,508 |
| Danube Countries | 0 | - | 4.97 | 71,024 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,684 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,479 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,345 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,268 |
| European Landlocked Countries | 0 | - | 4.99 | 145,693 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,100 |
| Countries with the Most Species | 0 | - | 4.99 | 95,210 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,251 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,185 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,344 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,924 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,537 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,893 |
| Countries in the Alps | 0 | - | 4.87 | 116,736 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,501 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,138 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,964 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,358 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,092 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,952 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,504 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,708 |
| Largest Country by Body of Water | 0 | - | 4.96 | 56,786 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,001 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,178 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,009 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,395 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,700 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,697 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,943 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,587 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,215 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,715 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,969 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,456 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,561 |
| Largest Countries By Category | 0 | - | 4.97 | 156,665 |
| African Island Countries | 0 | - | 4.96 | 100,700 |
| Countries by Countries | 0 | - | 4.96 | 62,197 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,283 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,943 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,310 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,036 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,697 |
| Islands by Country #1 | 0 | - | 4.87 | 174,421 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,828 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,291 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,924 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,215 |
| Island Countries | 0 | - | 4.99 | 707,371 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,726 |
| Northernmost Countries | 0 | - | 4.99 | 357,406 |
| "Land" Countries | 0 | - | 4.98 | 333,489 |
| Richest Island Countries | 0 | - | 4.84 | 99,433 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,747 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.99 | 68,154 |
| Name a Valid Island Country | 0 | - | 4.96 | 113,969 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,934 |
| Countries with Megacities | 0 | - | 4.99 | 246,361 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,859 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,768 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,311 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,712 |
| Countries by Official Language | 0 | - | 4.95 | 192,644 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,960 |
| Countries in their Native Language | 0 | - | 4.99 | 196,520 |
| Independence from Whom | 0 | - | 4.99 | 209,544 |
| Subdivisions by Country | 0 | - | 4.86 | 50,041 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,628 |
| Megadiverse Countries | 0 | - | 4.97 | 133,848 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,690 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,893 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,385 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,845 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,577 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,955 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,631 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,088 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,191 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,726 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,445 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,381 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,452 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,467 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,632 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,996 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,412 |
| World Map Quiz | 0 | - | 4.81 | 63,406 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,358 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,251 |
| Countries by Founding Story | 0 | - | 4.95 | 76,470 |
| Countries by Road Signs | 0 | - | 4.98 | 53,033 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,214 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,916 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,881 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,573 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,802 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,996 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,206 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,897 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,282 |
| Widest Countries East to West | 0 | - | 4.92 | 128,547 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,198 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,127 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,534 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,644 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,547 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,972 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,037 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,557 |
| Countries with Double Letters | 0 | - | 4.97 | 93,268 |
| Countries that End in N | 0 | - | 4.94 | 156,331 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,543 |
| Countries with Six Letters | 0 | - | 4.93 | 210,242 |
| Countries with W | 0 | - | 4.97 | 158,147 |
| Countries with Z | 0 | - | 4.98 | 287,720 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,459 |
| Countries That End in U | 0 | - | 4.95 | 119,470 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,422 |
| Countries that End in O | 0 | - | 4.92 | 158,500 |
| Countries that End in R | 0 | - | 4.87 | 118,231 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,824 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,908 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,214 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,416 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,638 |
| Countries That End in Y | 0 | - | 4.90 | 185,170 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,226 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,585 |
| Countries that End in I | 0 | - | 4.94 | 134,344 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,068 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,159 |
| Countries That End in NIA | 0 | - | 4.92 | 108,948 |
| Countries That End in BIA | 0 | - | 4.92 | 147,642 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,005 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,428 |
| Countries That End in RIA | 0 | - | 4.93 | 126,036 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,944 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,050 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,470 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,848 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,286 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,887 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,055 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,583 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,433 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,781 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,049 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,729 |
| Countries that End in L | 0 | - | 4.94 | 155,666 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,854 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,973 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,476 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,248 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,387 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,492 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 198,997 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,863 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,104 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,295 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,461 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,579 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,155 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,401 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,276 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,006 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,366 |
| One Border Countries | 0 | - | 4.98 | 463,815 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,798,647 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,584,960 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,606 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,753 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,765 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,788 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,423 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,523 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,183 |
| Countries by National Anthem | 0 | - | 4.92 | 71,002 |
| NATO Countries | 0 | - | 4.98 | 275,326 |
| EU Countries Quiz | 0 | - | 4.99 | 269,608 |
| Recently Independent Countries | 0 | - | 4.98 | 157,905 |
| French-Speaking Countries | 0 | - | 4.85 | 268,662 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,348 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,812 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,642 |
