| City to Country Quiz #1 | 0 | - | 4.97 | 157,210 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,787 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,358 |
| Landlocked Countries | 0 | - | 4.99 | 424,845 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,810,175 |
| Historical City to Country | 0 | - | 4.85 | 78,950 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,793 |
| Himalayan Countries | 0 | - | 4.93 | 139,884 |
| Andean Countries | 0 | - | 4.94 | 85,240 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,416 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,745 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,981 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,285 |
| Danube Countries | 0 | - | 4.97 | 72,298 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,451 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,739 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,920 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,419 |
| European Landlocked Countries | 0 | - | 4.99 | 147,496 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,141 |
| Countries with the Most Species | 0 | - | 4.99 | 103,508 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,286 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,722 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,836 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,770 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,505 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,934 |
| Countries in the Alps | 0 | - | 4.87 | 118,646 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,414 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,675 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,901 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,929 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,851 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,167 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,292 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,794 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,360 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,096 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,807 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,677 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,477 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,713 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,802 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,591 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,542 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,631 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,529 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,339 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,920 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,457 |
| Largest Countries By Category | 0 | - | 4.97 | 158,720 |
| Countries by Countries | 0 | - | 4.96 | 63,543 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,150 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,374 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,649 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,012 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,798,486 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,717 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,419 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,191 |
| Island Countries | 0 | - | 4.99 | 712,214 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,689 |
| Northernmost Countries | 0 | - | 4.99 | 363,584 |
| Countries of South America | 0 | - | 5.00 | 931,402 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,777 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,372 |
| "Land" Countries | 0 | - | 4.98 | 338,172 |
| City to Country Quiz #2 | 0 | - | 4.78 | 109,330 |
| City to Country Quiz #4 | 0 | - | 4.63 | 93,196 |
| City to Country Quiz #5 | 0 | - | 4.74 | 81,773 |
| City to Country Quiz #6 | 0 | - | 4.56 | 66,149 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,558 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,909 |
| Countries with Megacities | 0 | - | 4.99 | 266,632 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,618 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,983 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,922 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,086 |
| Countries by Official Language | 0 | - | 4.95 | 195,839 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,412 |
| Countries in their Native Language | 0 | - | 4.99 | 199,614 |
| Independence from Whom | 0 | - | 4.99 | 212,864 |
| Subdivisions by Country | 0 | - | 4.87 | 50,578 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,291 |
| Megadiverse Countries | 0 | - | 4.96 | 135,214 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,821 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,496 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,403 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,200 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,490 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,787 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,996 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,523 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,786 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,231 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,320 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,329 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,395 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,115 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,540 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,655 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,126 |
| World Map Quiz | 0 | - | 4.81 | 65,556 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,805 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,620 |
| Countries by Founding Story | 0 | - | 4.95 | 77,718 |
| Countries by Road Signs | 0 | - | 4.98 | 54,284 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,067 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,984 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,464 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,339 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,319 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,448 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,651 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,636 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,403 |
| Widest Countries East to West | 0 | - | 4.92 | 130,363 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,576 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,153 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,483 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,002 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,898 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,395 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,474 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,873 |
| Countries with Double Letters | 0 | - | 4.96 | 96,885 |
| Countries that End in N | 0 | - | 4.95 | 171,768 |
| Countries with Five Letters | 0 | - | 4.96 | 283,518 |
| Countries with Six Letters | 0 | - | 4.94 | 214,241 |
| Countries with W | 0 | - | 4.96 | 160,808 |
| Countries with Z | 0 | - | 4.98 | 292,231 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,164 |
| Countries That End in U | 0 | - | 4.95 | 121,109 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,974 |
| Countries that End in O | 0 | - | 4.92 | 159,748 |
| Countries that End in R | 0 | - | 4.87 | 119,130 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,887 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,674 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,051 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,752 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,682 |
| Countries That End in Y | 0 | - | 4.91 | 186,045 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,345 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,177 |
| Countries that End in I | 0 | - | 4.94 | 135,264 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,513 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,004 |
| Countries That End in NIA | 0 | - | 4.92 | 109,991 |
| Countries That End in BIA | 0 | - | 4.93 | 149,507 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,428 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,699 |
| Countries That End in RIA | 0 | - | 4.93 | 127,009 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,301 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,389 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,073 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,514 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,079 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,762 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,260 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,520 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,821 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,606 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,626 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,316 |
| Countries that End in L | 0 | - | 4.94 | 157,063 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,581 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,329 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,296 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,049 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,377 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,178 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,876 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,144 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,210 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,801 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,186 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,825 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,146 |
| One Border Countries | 0 | - | 4.98 | 471,521 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 23,075 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,845,554 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,648,691 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,250 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,862 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,564 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,837 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,121 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,521 |
| Countries by National Anthem | 0 | - | 4.92 | 71,390 |
| NATO Countries | 0 | - | 4.98 | 283,018 |
| EU Countries Quiz | 0 | - | 4.99 | 277,351 |
| Recently Independent Countries | 0 | - | 4.98 | 159,875 |
| French-Speaking Countries | 0 | - | 4.85 | 271,507 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,014 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,517 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,915 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,434 |
| German-Speaking Countries | 0 | - | 4.92 | 145,963 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,192 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,481 |
