| City to Country Quiz #1 | 0 | - | 4.96 | 157,901 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,167 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,555 |
| Landlocked Countries | 0 | - | 4.99 | 427,386 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,980,856 |
| Historical City to Country | 0 | - | 4.85 | 79,107 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,986 |
| Himalayan Countries | 0 | - | 4.93 | 140,886 |
| Andean Countries | 0 | - | 4.94 | 85,831 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,946 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,524 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,489 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,709 |
| Danube Countries | 0 | - | 4.97 | 72,573 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,822 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,988 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,471 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,945 |
| European Landlocked Countries | 0 | - | 4.99 | 147,785 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,556 |
| Countries with the Most Species | 0 | - | 4.99 | 103,656 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,661 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,819 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,961 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,934 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,688 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,145 |
| Countries in the Alps | 0 | - | 4.87 | 119,002 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,041 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,180 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,074 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,189 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,144 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,404 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,615 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,006 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,519 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,324 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,961 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,834 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,685 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,938 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,037 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,174 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,746 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,560 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,858 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,387 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,538 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,626 |
| Largest Countries By Category | 0 | - | 4.97 | 159,119 |
| Countries by Countries | 0 | - | 4.97 | 63,820 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,470 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,451 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,709 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,569 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,244 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,813,457 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,748 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,082 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,452 |
| Island Countries | 0 | - | 4.99 | 713,062 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,340 |
| Northernmost Countries | 0 | - | 4.99 | 364,666 |
| Countries of South America | 0 | - | 5.00 | 934,493 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,748 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,535 |
| "Land" Countries | 0 | - | 4.98 | 339,058 |
| City to Country Quiz #2 | 0 | - | 4.80 | 109,667 |
| City to Country Quiz #5 | 0 | - | 4.74 | 82,056 |
| City to Country Quiz #6 | 0 | - | 4.56 | 66,412 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,562 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,540 |
| Countries with Megacities | 0 | - | 4.99 | 267,953 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,195 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,356 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,521 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,462 |
| Countries by Official Language | 0 | - | 4.95 | 196,253 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,990 |
| Countries in their Native Language | 0 | - | 4.99 | 199,977 |
| Independence from Whom | 0 | - | 4.99 | 213,443 |
| Subdivisions by Country | 0 | - | 4.87 | 50,674 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,693 |
| Megadiverse Countries | 0 | - | 4.96 | 149,388 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,159 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,588 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,820 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,264 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,497 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,930 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,306 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,637 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,178 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,289 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,813 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,501 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,515 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,226 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,649 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,984 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,779 |
| World Map Quiz | 0 | - | 4.81 | 65,939 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,978 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,828 |
| Countries by Founding Story | 0 | - | 4.95 | 77,922 |
| Countries by Road Signs | 0 | - | 4.98 | 54,461 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,552 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,252 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,722 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,971 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,572 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,685 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,871 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,773 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,965 |
| Widest Countries East to West | 0 | - | 4.92 | 130,870 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,634 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,423 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,570 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,172 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,134 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,626 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,542 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,928 |
| Countries with Double Letters | 0 | - | 4.96 | 97,682 |
| Countries that End in N | 0 | - | 4.95 | 172,675 |
| Countries with Five Letters | 0 | - | 4.96 | 284,714 |
| Countries with Six Letters | 0 | - | 4.94 | 215,012 |
| Countries with W | 0 | - | 4.96 | 161,348 |
| Countries with Z | 0 | - | 4.98 | 293,073 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,722 |
| Countries That End in U | 0 | - | 4.95 | 121,411 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,472 |
| Countries that End in O | 0 | - | 4.92 | 160,389 |
| Countries that End in R | 0 | - | 4.87 | 119,293 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,071 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,189 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 186,675 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,238 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,878 |
| Countries That End in Y | 0 | - | 4.91 | 186,188 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,393 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,448 |
| Countries that End in I | 0 | - | 4.94 | 135,438 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,354 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,155 |
| Countries That End in NIA | 0 | - | 4.92 | 110,170 |
| Countries That End in BIA | 0 | - | 4.93 | 149,755 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,955 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,921 |
| Countries That End in RIA | 0 | - | 4.93 | 127,166 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,562 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,993 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,419 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,882 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,437 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,934 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,476 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,616 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,075 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,748 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,930 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,644 |
| Countries that End in L | 0 | - | 4.94 | 157,269 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,668 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,383 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,690 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,328 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,540 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,433 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,214 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,331 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,303 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,976 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,882 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,375 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,273 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,038 |
| One Border Countries | 0 | - | 4.98 | 472,661 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,765 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 23,105 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,853,947 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,660,502 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,480 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,549 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,836 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 113,007 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,382 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,739 |
| Countries by National Anthem | 0 | - | 4.92 | 71,442 |
| NATO Countries | 0 | - | 4.98 | 284,062 |
| EU Countries Quiz | 0 | - | 4.99 | 278,968 |
| Recently Independent Countries | 0 | - | 4.98 | 160,527 |
| French-Speaking Countries | 0 | - | 4.85 | 271,929 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,257 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,260 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,982 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 278,023 |
| German-Speaking Countries | 0 | - | 4.92 | 146,100 |
