| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,735 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,001 |
| Landlocked Countries | 0 | - | 4.99 | 422,995 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,657 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,662,355 |
| Top 10 European Countries with the Highest Elevation | 0 | - | 4.83 | 91,367 |
| Top Rice-Producing Countries | 0 | - | 4.95 | 99,258 |
| Top Chocolate Growing Countries | 0 | - | 4.93 | 61,954 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,013 |
| Himalayan Countries | 0 | - | 4.95 | 139,176 |
| Andean Countries | 0 | - | 4.93 | 84,872 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,089 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,228 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,672 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,978 |
| Danube Countries | 0 | - | 4.97 | 72,132 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,184 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,538 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,527 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,037 |
| European Landlocked Countries | 0 | - | 4.99 | 147,272 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,834 |
| Countries with the Most Species | 0 | - | 4.99 | 103,343 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,959 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,647 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,766 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,616 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,364 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,782 |
| Countries in the Alps | 0 | - | 4.87 | 118,361 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,744 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,280 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,754 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,712 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,632 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,039 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,813 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,605 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,248 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,953 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,720 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,589 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,321 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,562 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,633 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,155 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,399 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,727 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,244 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,490 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,420 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,309 |
| Largest Countries By Category | 0 | - | 4.97 | 158,393 |
| Countries by Countries | 0 | - | 4.96 | 63,359 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,839 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,323 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,592 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,792 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,785,743 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,489 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,833 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,979 |
| Island Countries | 0 | - | 4.99 | 711,413 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,135 |
| Northernmost Countries | 0 | - | 4.99 | 362,474 |
| Countries of South America | 0 | - | 5.00 | 928,755 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,689 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,880,450 |
| "Land" Countries | 0 | - | 4.98 | 337,629 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,850 |
| Top 10 Countries with the Most Volcanoes | 0 | - | 4.53 | 77,544 |
| Top 10 Countries with the Most Time Zones | 0 | - | 4.68 | 155,755 |
| Top 10 Most Protestant European Countries | 0 | - | 4.49 | 36,696 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,386,182 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,194 |
| Countries with Megacities | 0 | - | 4.99 | 265,285 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,016 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,631 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,273 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,707 |
| Countries by Official Language | 0 | - | 4.95 | 195,464 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,665 |
| Countries in their Native Language | 0 | - | 4.99 | 199,240 |
| Independence from Whom | 0 | - | 4.99 | 212,327 |
| Subdivisions by Country | 0 | - | 4.87 | 50,483 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,904 |
| Megadiverse Countries | 0 | - | 4.96 | 135,093 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,268 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,412 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,292 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,139 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,266 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,659 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,614 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,415 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,705 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,181 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,897 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,948 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,266 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,012 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,423 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,543 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,522 |
| World Map Quiz | 0 | - | 4.81 | 65,246 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,820 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,453 |
| Countries by Founding Story | 0 | - | 4.95 | 77,457 |
| Countries by Road Signs | 0 | - | 4.98 | 54,109 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,301 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,399 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,112 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,557 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,010 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,121 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,396 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,494 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,648 |
| Widest Countries East to West | 0 | - | 4.92 | 129,747 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,480 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,508 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,310 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,837 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,696 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,969 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,409 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,821 |
| Countries with Double Letters | 0 | - | 4.96 | 96,472 |
| Countries that End in N | 0 | - | 4.95 | 171,358 |
| Countries with Five Letters | 0 | - | 4.96 | 282,900 |
| Countries with Six Letters | 0 | - | 4.94 | 213,808 |
| Countries with W | 0 | - | 4.96 | 160,498 |
| Countries with Z | 0 | - | 4.98 | 291,721 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,856 |
| Countries That End in U | 0 | - | 4.95 | 120,940 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,633 |
| Countries that End in O | 0 | - | 4.92 | 159,592 |
| Countries that End in R | 0 | - | 4.87 | 119,023 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,784 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,306 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,807 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,579 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,486 |
| Countries That End in Y | 0 | - | 4.91 | 185,941 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,056 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,983 |
| Countries that End in I | 0 | - | 4.94 | 135,167 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,242 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,877 |
| Countries That End in NIA | 0 | - | 4.92 | 109,856 |
| Countries That End in BIA | 0 | - | 4.93 | 149,305 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,213 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,523 |
| Countries That End in RIA | 0 | - | 4.93 | 126,878 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,110 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,881 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,844 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,275 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,821 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,638 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,109 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,467 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,624 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,485 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,404 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,095 |
| Countries that End in L | 0 | - | 4.94 | 156,921 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,256 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,288 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,091 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,020 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,061 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,936 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,802 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,226 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,946 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,601 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,965 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,139 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,834 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,379 |
| One Border Countries | 0 | - | 4.98 | 470,447 |
| Countries that Eat the Most Fish | 0 | - | 4.26 | 71,972 |
| Top 10 Countries with the Most Fishermen | 0 | - | 4.30 | 45,406 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,838,637 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,638,100 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,036 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,427 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,298 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,859 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,312 |
| Countries by National Anthem | 0 | - | 4.93 | 71,320 |
| NATO Countries | 0 | - | 4.98 | 282,026 |
| EU Countries Quiz | 0 | - | 4.99 | 276,141 |
| Recently Independent Countries | 0 | - | 4.98 | 159,590 |
| French-Speaking Countries | 0 | - | 4.85 | 271,090 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,938 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,914 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,827 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,091 |
