| Countries of the World Quiz | 0 | - | 5.00 | 46,950,940 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,547 |
| Landlocked Countries | 0 | - | 4.99 | 413,957 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,320 |
| Countries with the Most Malaria Deaths | 0 | - | 4.47 | 44,891 |
| Countries with Glaciers | 0 | - | 4.97 | 104,688 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,663 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,257 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,720,025 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,740 |
| Himalayan Countries | 0 | - | 4.95 | 135,485 |
| Andean Countries | 0 | - | 4.94 | 82,884 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,269 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,287 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,963 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,650 |
| Danube Countries | 0 | - | 4.97 | 71,111 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,807 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,572 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,560 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,467 |
| European Landlocked Countries | 0 | - | 4.99 | 145,794 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,258 |
| Countries with the Most Species | 0 | - | 4.99 | 95,259 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,402 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,210 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,382 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,976 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,597 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,977 |
| Countries in the Alps | 0 | - | 4.86 | 116,887 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,605 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,327 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,038 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,457 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,218 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,038 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,616 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,783 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,431 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,099 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,206 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,059 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,479 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,787 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,779 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,147 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,683 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,276 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,823 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,496 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,798 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,623 |
| Largest Countries By Category | 0 | - | 4.97 | 156,827 |
| Countries by Countries | 0 | - | 4.96 | 62,294 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,455 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,976 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,343 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,805 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,525 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,243 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,061 |
| Island Countries | 0 | - | 4.99 | 707,757 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,985 |
| Northernmost Countries | 0 | - | 4.99 | 357,933 |
| Countries of South America | 0 | - | 5.00 | 915,424 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,372 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,849,738 |
| "Land" Countries | 0 | - | 4.98 | 333,743 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,333 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,494 |
| Countries with Megacities | 0 | - | 4.99 | 247,331 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,327 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,120 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,749 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,041 |
| Countries by Official Language | 0 | - | 4.95 | 192,851 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,224 |
| Countries in their Native Language | 0 | - | 4.99 | 196,709 |
| Independence from Whom | 0 | - | 4.99 | 209,793 |
| Subdivisions by Country | 0 | - | 4.86 | 50,084 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,831 |
| Megadiverse Countries | 0 | - | 4.97 | 133,933 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,876 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,934 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,444 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,869 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,715 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,030 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,109 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,181 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,230 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,753 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,659 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,443 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,521 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,521 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,708 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,041 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,678 |
| World Map Quiz | 0 | - | 4.81 | 63,551 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,889 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,367 |
| Countries by Founding Story | 0 | - | 4.95 | 76,582 |
| Countries by Road Signs | 0 | - | 4.98 | 53,140 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,433 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,099 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,989 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,870 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,905 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,099 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,308 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,965 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,363 |
| Widest Countries East to West | 0 | - | 4.92 | 128,638 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,220 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,274 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,588 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,718 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,669 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,092 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,058 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,596 |
| Countries with Double Letters | 0 | - | 4.96 | 93,451 |
| Countries that End in N | 0 | - | 4.94 | 156,956 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,764 |
| Countries with Six Letters | 0 | - | 4.93 | 210,424 |
| Countries with W | 0 | - | 4.97 | 158,275 |
| Countries with Z | 0 | - | 4.98 | 287,959 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,600 |
| Countries That End in U | 0 | - | 4.95 | 119,540 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,648 |
| Countries that End in O | 0 | - | 4.92 | 158,580 |
| Countries that End in R | 0 | - | 4.87 | 118,296 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,871 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,158 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,383 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,529 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,072 |
| Countries That End in Y | 0 | - | 4.90 | 185,224 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,442 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,736 |
| Countries that End in I | 0 | - | 4.94 | 134,450 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,266 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,220 |
| Countries That End in NIA | 0 | - | 4.92 | 109,034 |
| Countries That End in BIA | 0 | - | 4.92 | 147,741 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,119 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,520 |
| Countries That End in RIA | 0 | - | 4.93 | 126,109 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,042 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,263 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,549 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,924 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,403 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,952 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,158 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,684 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,546 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,831 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,194 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,861 |
| Countries that End in L | 0 | - | 4.94 | 155,774 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,436 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,997 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,539 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,332 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,456 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,269 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,206 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 129,763 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,286 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,514 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,612 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,661 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,181 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,433 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,348 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,732 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,817 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,802,606 |
| One Border Countries | 0 | - | 4.98 | 464,687 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,589,778 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,384 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,924 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,103 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,965 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,532 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,695 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,353 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,716 |
| Countries by National Anthem | 0 | - | 4.93 | 71,039 |
| NATO Countries | 0 | - | 4.98 | 276,077 |
| EU Countries Quiz | 0 | - | 4.99 | 270,172 |
| Recently Independent Countries | 0 | - | 4.98 | 158,039 |
| French-Speaking Countries | 0 | - | 4.85 | 268,899 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,391 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,131 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,130 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,594 |
