| City to Country Quiz #1 | 0 | - | 4.97 | 156,354 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,225 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,180 |
| Historical City to Country | 0 | - | 4.85 | 78,820 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,767,752 |
| Landlocked Countries | 0 | - | 4.99 | 424,293 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,795,083 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,546 |
| Himalayan Countries | 0 | - | 4.94 | 139,701 |
| Andean Countries | 0 | - | 4.94 | 85,148 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,324 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,576 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,901 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,179 |
| Danube Countries | 0 | - | 4.97 | 72,255 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,390 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,685 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,814 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,306 |
| European Landlocked Countries | 0 | - | 4.99 | 147,434 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,049 |
| Countries with the Most Species | 0 | - | 4.99 | 103,459 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,181 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,701 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,813 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,729 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,459 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,884 |
| Countries in the Alps | 0 | - | 4.87 | 118,551 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,239 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,560 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,845 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,858 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,779 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,119 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,007 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,714 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,330 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,048 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,783 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,650 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,430 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,667 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,757 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,459 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,508 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,472 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,461 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,124 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,786 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,415 |
| Largest Countries By Category | 0 | - | 4.97 | 158,609 |
| Countries by Countries | 0 | - | 4.96 | 63,488 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,060 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,359 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,638 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,960 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,881 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,246 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,824 |
| Island Countries | 0 | - | 4.99 | 711,983 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,035 |
| Northernmost Countries | 0 | - | 4.99 | 363,324 |
| Countries of South America | 0 | - | 5.00 | 930,618 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,026 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,872 |
| "Land" Countries | 0 | - | 4.98 | 338,012 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,250 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,746 |
| City to Country Quiz #4 | 0 | - | 4.61 | 86,237 |
| City to Country Quiz #5 | 0 | - | 4.74 | 81,326 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,719 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,728 |
| Countries with Megacities | 0 | - | 4.99 | 266,258 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,457 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,869 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,748 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,983 |
| Countries by Official Language | 0 | - | 4.95 | 195,747 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,265 |
| Countries in their Native Language | 0 | - | 4.99 | 199,520 |
| Independence from Whom | 0 | - | 4.99 | 212,705 |
| Subdivisions by Country | 0 | - | 4.87 | 50,555 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,183 |
| Megadiverse Countries | 0 | - | 4.96 | 135,183 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,739 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,475 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,371 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,178 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,419 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,739 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,865 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,497 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,769 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,219 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,156 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,299 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,362 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,085 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,507 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,620 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,967 |
| World Map Quiz | 0 | - | 4.81 | 65,417 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,516 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,563 |
| Countries by Founding Story | 0 | - | 4.95 | 77,649 |
| Countries by Road Signs | 0 | - | 4.98 | 54,238 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,949 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,926 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,415 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,176 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,269 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,390 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,586 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,612 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,946 |
| Widest Countries East to West | 0 | - | 4.92 | 130,291 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,555 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,084 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,455 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,968 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,846 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,349 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,461 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,860 |
| Countries with Double Letters | 0 | - | 4.96 | 96,774 |
| Countries that End in N | 0 | - | 4.95 | 171,658 |
| Countries with Five Letters | 0 | - | 4.96 | 283,355 |
| Countries with Six Letters | 0 | - | 4.94 | 214,117 |
| Countries with W | 0 | - | 4.96 | 160,725 |
| Countries with Z | 0 | - | 4.98 | 292,096 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,074 |
| Countries That End in U | 0 | - | 4.95 | 121,066 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,873 |
| Countries that End in O | 0 | - | 4.92 | 159,715 |
| Countries that End in R | 0 | - | 4.87 | 119,101 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,851 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,554 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,986 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,698 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,630 |
| Countries That End in Y | 0 | - | 4.91 | 186,018 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,265 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,122 |
| Countries that End in I | 0 | - | 4.94 | 135,245 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,442 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,966 |
| Countries That End in NIA | 0 | - | 4.92 | 109,952 |
| Countries That End in BIA | 0 | - | 4.93 | 149,442 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,378 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,648 |
| Countries That End in RIA | 0 | - | 4.93 | 126,969 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,260 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,221 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,012 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,448 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,009 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,724 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,223 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,506 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,767 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,571 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,566 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,260 |
| Countries that End in L | 0 | - | 4.94 | 157,022 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,925 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,316 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,193 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,976 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,330 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,109 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,799 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,096 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,188 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,776 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,154 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,960 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,945 |
| One Border Countries | 0 | - | 4.98 | 471,238 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,843,647 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,645,898 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,622 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 23,058 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,183 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,718 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,498 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,786 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,061 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,462 |
| Countries by National Anthem | 0 | - | 4.92 | 71,370 |
| NATO Countries | 0 | - | 4.98 | 282,731 |
| EU Countries Quiz | 0 | - | 4.99 | 277,022 |
| Recently Independent Countries | 0 | - | 4.98 | 159,770 |
| French-Speaking Countries | 0 | - | 4.85 | 271,407 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,995 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,346 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,545 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,989 |
| German-Speaking Countries | 0 | - | 4.92 | 145,935 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,153 |
