| Countries of Europe Quiz | 0 | - | 5.00 | 3,762,088 |
| Countries of South America | 0 | - | 5.00 | 924,045 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,691 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,869,261 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,340 |
| Top 10 European Countries with the Highest Elevation | 0 | - | 4.83 | 91,171 |
| Top Rice-Producing Countries | 0 | - | 4.95 | 98,763 |
| Top Chocolate Growing Countries | 0 | - | 4.93 | 61,725 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,396,359 |
| Landlocked Countries | 0 | - | 4.99 | 419,718 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,319 |
| Himalayan Countries | 0 | - | 4.95 | 137,757 |
| Andean Countries | 0 | - | 4.95 | 84,097 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,339 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,871 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,968 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,446 |
| Danube Countries | 0 | - | 4.97 | 71,739 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,665 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,141 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,802 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,879 |
| European Landlocked Countries | 0 | - | 4.99 | 146,863 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,242 |
| Countries with the Most Species | 0 | - | 4.99 | 103,007 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,400 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,458 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,621 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,372 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,045 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,440 |
| Countries in the Alps | 0 | - | 4.87 | 117,821 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,217 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,542 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,471 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,313 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,209 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,781 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,375 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,262 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,024 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,626 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,524 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,373 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,994 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,261 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,283 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,356 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,118 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,624 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,660 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,747 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,446 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,043 |
| Largest Countries By Category | 0 | - | 4.97 | 157,789 |
| Countries by Countries | 0 | - | 4.96 | 62,925 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,327 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,181 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,487 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,414 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,022,061 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,851 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,572 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,646 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,569 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,163 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,111 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,509 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,147 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,081 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,922 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,198 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.95 | 124,617 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,190 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,683 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,824 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,755 |
| Island Countries | 0 | - | 4.99 | 710,091 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,953 |
| Northernmost Countries | 0 | - | 4.99 | 360,867 |
| "Land" Countries | 0 | - | 4.98 | 335,991 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,626 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,994 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,258 |
| Countries with Megacities | 0 | - | 4.99 | 262,426 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,089 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,117 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,395 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,168 |
| Countries by Official Language | 0 | - | 4.95 | 194,800 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,749 |
| Countries in their Native Language | 0 | - | 4.99 | 198,341 |
| Independence from Whom | 0 | - | 4.99 | 211,537 |
| Subdivisions by Country | 0 | - | 4.86 | 50,326 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,851 |
| Megadiverse Countries | 0 | - | 4.96 | 134,823 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,669 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,222 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,793 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,036 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,813 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,432 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,089 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,895 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,531 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,018 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,178 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,762 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,039 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,828 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,206 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,373 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,426 |
| World Map Quiz | 0 | - | 4.81 | 64,733 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,980 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,117 |
| Countries by Founding Story | 0 | - | 4.95 | 77,136 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,659 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,018 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,750 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,584 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,619 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,766 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,904 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,316 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,355 |
| Widest Countries East to West | 0 | - | 4.92 | 129,444 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,405 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,059 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,030 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,582 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,319 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,635 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,278 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,742 |
| Countries with Double Letters | 0 | - | 4.97 | 95,248 |
| Countries that End in N | 0 | - | 4.95 | 170,251 |
| Countries with Five Letters | 0 | - | 4.96 | 280,983 |
| Countries with Six Letters | 0 | - | 4.94 | 212,686 |
| Countries with W | 0 | - | 4.97 | 159,634 |
| Countries with Z | 0 | - | 4.98 | 290,408 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,876 |
| Countries That End in U | 0 | - | 4.95 | 120,467 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,891 |
| Countries that End in O | 0 | - | 4.92 | 159,249 |
| Countries that End in R | 0 | - | 4.87 | 118,769 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,546 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,483 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,238 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,157 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,763 |
| Countries That End in Y | 0 | - | 4.91 | 185,685 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,419 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,521 |
| Countries that End in I | 0 | - | 4.94 | 134,911 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,551 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,619 |
| Countries That End in NIA | 0 | - | 4.92 | 109,570 |
| Countries That End in BIA | 0 | - | 4.93 | 148,919 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,819 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,140 |
| Countries That End in RIA | 0 | - | 4.93 | 126,591 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,727 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,925 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,334 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,714 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,242 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,384 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,738 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,317 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,233 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,241 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,918 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,647 |
| Countries that End in L | 0 | - | 4.94 | 156,602 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,428 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,168 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,881 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,777 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,823 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,933 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,302 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,724 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,232 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,726 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,646 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,988 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,617 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,722 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,515 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,040 |
| One Border Countries | 0 | - | 4.98 | 468,157 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,825,802 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,619,172 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,640 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,610 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,794 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,463 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,013 |
| Countries by National Anthem | 0 | - | 4.92 | 71,210 |
