| City to Country Quiz #1 | 0 | - | 4.96 | 151,531 |
| City to Country Quiz #3 | 0 | - | 4.87 | 105,579 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 76,303 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 391,563 |
| Countries of the World Quiz | 0 | - | 5.00 | 44,994,773 |
| Historical City to Country | 0 | - | 4.83 | 76,356 |
| Sahara Desert Countries | 0 | - | 4.98 | 150,083 |
| Himalayan Countries | 0 | - | 4.94 | 126,165 |
| Andean Countries | 0 | - | 4.93 | 71,028 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 58,459 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 116,159 |
| Coffee Producing Countries | 0 | - | 4.83 | 61,800 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 60,879 |
| Danube Countries | 0 | - | 4.97 | 61,910 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 98,328 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 82,909 |
| Countries with the Worst Passports | 0 | - | 4.92 | 75,888 |
| Countries with the Most Immigrants | 0 | - | 4.89 | 141,448 |
| European Landlocked Countries | 0 | - | 4.99 | 142,626 |
| Partially Recognized Countries | 0 | - | 4.98 | 100,201 |
| Countries with the Most Species | 0 | - | 4.99 | 93,285 |
| Countries 197 to 205 | 0 | - | 4.88 | 65,126 |
| Tropic of Cancer Countries | 0 | - | 4.95 | 47,163 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 46,249 |
| Countries that Use the Peso | 0 | - | 4.89 | 57,165 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 70,685 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 54,620 |
| Countries in the Alps | 0 | - | 4.86 | 112,281 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 91,793 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 99,839 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 76,178 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 91,694 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 112,149 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 92,789 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 96,344 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 50,646 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 48,610 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 59,675 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 51,832 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 39,638 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 100,981 |
| Arctic Ocean Countries | 0 | - | 4.94 | 76,648 |
| Countries with the Most Grassland | 0 | - | 4.93 | 74,478 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 111,335 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 65,603 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 57,506 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.94 | 40,871 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 227,057 |
| World Countries - Blind Typing | 0 | - | 5.00 | 98,099 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 45,843 |
| Largest Countries By Category | 0 | - | 4.97 | 152,742 |
| Countries by Countries | 0 | - | 4.96 | 59,430 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,458,421 |
| Country Flags with the Most White | 0 | - | 4.85 | 133,498 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,016 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.86 | 46,586 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 85,012 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,536,263 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 363,402 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 387,374 |
| Island Countries Quiz | 0 | - | 4.99 | 696,062 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,007,793 |
| Northernmost Countries | 0 | - | 4.99 | 345,430 |
| Countries of South America | 0 | - | 5.00 | 876,568 |
| Countries of Oceania | 0 | - | 5.00 | 992,788 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,760,574 |
| City to Country Quiz #2 | 0 | - | 4.74 | 96,061 |
| City to Country Quiz #4 | 0 | - | 4.53 | 81,332 |
| City to Country Quiz #5 | 0 | - | 4.74 | 78,520 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,290,143 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 163,154 |
| Countries with Megacities | 0 | - | 4.99 | 222,832 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 189,892 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 107,862 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 129,176 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 75,290 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 303,540 |
| Countries by Official Language | 0 | - | 4.95 | 186,338 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.90 | 285,038 |
| Countries in their Native Language | 0 | - | 4.98 | 190,647 |
| Independence from Whom | 0 | - | 4.99 | 202,883 |
| Subdivisions by Country | 0 | - | 4.86 | 49,004 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 125,916 |
| Megadiverse Countries | 0 | - | 4.97 | 131,370 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 124,271 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 53,453 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 122,781 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 73,581 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.86 | 49,610 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 157,061 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 60,335 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 88,882 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 150,242 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 81,120 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,666 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 69,922 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 105,387 |
| Countries Furthest from the United States | 0 | - | 4.93 | 86,575 |
| Countries with the Highest HDI | 0 | - | 4.95 | 135,055 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 72,807 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 69,271 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 100,994 |
| World Map Quiz | 0 | - | 4.87 | 59,290 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 139,835 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 87,900 |
| Southernmost Countries of the World | 0 | - | 4.99 | 220,599 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 100,351 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 117,948 |
| Countries With the Most Languages | 0 | - | 4.89 | 192,259 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.94 | 98,173 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 89,731 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 94,943 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 59,082 |
| Tallest Countries North to South | 0 | - | 4.83 | 116,727 |
| Widest Countries East to West | 0 | - | 4.92 | 125,862 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,467 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 181,725 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 96,038 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 91,255 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 126,402 |
| Countries with the Most Desert | 0 | - | 4.93 | 124,237 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 68,319 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 33,869 |
| Countries with Double Letters | 0 | - | 4.97 | 86,396 |
| Countries that End in N | 0 | - | 4.94 | 149,846 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 250,377 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 203,936 |
| Countries with W | 0 | - | 4.97 | 152,902 |
| Countries with Z | 0 | - | 4.98 | 279,959 |
| Countries with Letters Missing | 0 | - | 4.97 | 179,425 |
| Countries That End in U | 0 | - | 4.95 | 116,398 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 103,482 |
| Countries that End in O | 0 | - | 4.92 | 155,945 |
| Countries that End in R | 0 | - | 4.83 | 100,959 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 152,846 |
| Countries Ending in "IA" | 0 | - | 4.99 | 201,015 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 165,610 |
| Countries by Last Two Letters | 0 | - | 4.88 | 131,738 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 137,652 |
| Countries That End in Y | 0 | - | 4.91 | 183,011 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 191,919 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 148,083 |
| Countries that End in I | 0 | - | 4.92 | 118,211 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 177,486 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 93,206 |
| Countries That End in NIA | 0 | - | 4.92 | 106,885 |
| Countries That End in BIA | 0 | - | 4.92 | 144,917 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 162,598 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 115,928 |
| Countries That End in RIA | 0 | - | 4.92 | 123,455 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 107,226 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 218,419 |
| Divided Country Name Puzzle #2 | 0 | - | 4.98 | 128,866 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 120,834 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 86,733 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 72,105 |
| Countries With One Word and Three A's | 0 | - | 4.94 | 49,734 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 99,749 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 121,363 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 47,126 |
| Countries with the Word "And" | 0 | - | 4.98 | 91,318 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 49,387 |
| Countries that End in L | 0 | - | 4.94 | 153,151 |
| "Land" Countries | 0 | - | 4.98 | 301,497 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 199,219 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,305 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 222,292 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 194,555 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 123,389 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 158,486 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 218,303 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 148,681 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 69,390 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 106,416 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.94 | 85,265 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 60,378 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,394,962 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 367,660 |
| One Border Countries | 0 | - | 4.98 | 448,757 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.50 | 22,561 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,671,927 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 82,959 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 259,665 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 117,289 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 108,634 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 89,455 |
| Countries by National Anthem | 0 | - | 4.93 | 70,248 |
| NATO Countries Quiz | 0 | - | 4.98 | 260,747 |
| EU Countries Quiz | 0 | - | 4.99 | 257,367 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 153,690 |
| French-Speaking Countries | 0 | - | 4.85 | 262,234 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 81,704 |
| Countries That Use the Euro | 0 | - | 4.96 | 84,729 |
| Countries with the Most Military Troops | 0 | - | 4.96 | 271,655 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 252,153 |
| German-Speaking Countries | 0 | - | 4.89 | 121,782 |
| Countries with Wild Tigers | 0 | - | 4.97 | 132,939 |
| Countries with Wild Penguins | 0 | - | 4.93 | 96,851 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 153,296 |
| Top Five Countries by Religion | 0 | - | 4.91 | 160,697 |
