| Spanish-Speaking Countries | 0 | - | 4.95 | 375,911 |
| Countries by Official Language | 0 | - | 4.95 | 195,510 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,742 |
| Countries in their Native Language | 0 | - | 4.99 | 199,296 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,317 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,545 |
| French-Speaking Countries | 0 | - | 4.85 | 271,158 |
| German-Speaking Countries | 0 | - | 4.92 | 145,856 |
| Spanish to English Country Names | 0 | - | 4.86 | 33,544 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,681,828 |
| Landlocked Countries | 0 | - | 4.99 | 423,233 |
| English Speaking Countries | 0 | - | 4.64 | 357,827 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,787,530 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,103 |
| Himalayan Countries | 0 | - | 4.94 | 139,280 |
| Andean Countries | 0 | - | 4.93 | 84,918 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,135 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,296 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,711 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,025 |
| Danube Countries | 0 | - | 4.97 | 72,153 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,223 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,563 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,572 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,084 |
| European Landlocked Countries | 0 | - | 4.99 | 147,302 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,869 |
| Countries with the Most Species | 0 | - | 4.99 | 103,358 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,004 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,656 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,773 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,635 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,387 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,804 |
| Countries in the Alps | 0 | - | 4.87 | 118,402 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,841 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,321 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,769 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,739 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,654 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,060 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,846 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,626 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,258 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,978 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,732 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,603 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,341 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,586 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,655 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,223 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,425 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,895 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,279 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,606 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,479 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,332 |
| Largest Countries By Category | 0 | - | 4.97 | 158,438 |
| Countries by Countries | 0 | - | 4.96 | 63,383 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,893 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,330 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,597 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,151 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,816 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.95 | 124,799 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,706 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,139 |
| Island Countries | 0 | - | 4.99 | 711,512 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,479 |
| Northernmost Countries | 0 | - | 4.99 | 362,606 |
| Countries of South America | 0 | - | 5.00 | 929,113 |
| Countries of Oceania | 0 | - | 5.00 | 1,059,112 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,881,240 |
| "Land" Countries | 0 | - | 4.98 | 337,692 |
| Top World Languages | 0 | - | 4.92 | 826,242 |
| 15 Most Populous Countries that Speak a Romance Language | 0 | - | 4.75 | 127,940 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,386,873 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,275 |
| Countries with Megacities | 0 | - | 4.99 | 265,460 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,103 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,670 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,342 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,741 |
| Independence from Whom | 0 | - | 4.99 | 212,383 |
| Subdivisions by Country | 0 | - | 4.87 | 50,495 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,951 |
| Megadiverse Countries | 0 | - | 4.96 | 135,109 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,425 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,308 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,144 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,300 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,667 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,644 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,428 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,719 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,189 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,959 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,971 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,285 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,024 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,448 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,560 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,612 |
| World Map Quiz | 0 | - | 4.81 | 65,279 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,929 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,469 |
| Countries by Founding Story | 0 | - | 4.95 | 77,473 |
| Countries by Road Signs | 0 | - | 4.98 | 54,141 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,354 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,438 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,145 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,653 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,046 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,153 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,415 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,510 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,667 |
| Widest Countries East to West | 0 | - | 4.92 | 129,778 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,483 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,748 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,397 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,859 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,729 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,994 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,422 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,826 |
| Countries with Double Letters | 0 | - | 4.96 | 96,529 |
| Countries that End in N | 0 | - | 4.95 | 171,431 |
| Countries with Five Letters | 0 | - | 4.96 | 282,986 |
| Countries with Six Letters | 0 | - | 4.94 | 213,851 |
| Countries with W | 0 | - | 4.96 | 160,545 |
| Countries with Z | 0 | - | 4.98 | 291,784 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,901 |
| Countries That End in U | 0 | - | 4.95 | 120,967 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,673 |
| Countries that End in O | 0 | - | 4.92 | 159,617 |
| Countries that End in R | 0 | - | 4.87 | 119,042 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,799 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,356 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,847 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,600 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,509 |
| Countries That End in Y | 0 | - | 4.91 | 185,955 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,091 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,009 |
| Countries that End in I | 0 | - | 4.94 | 135,179 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,274 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,893 |
| Countries That End in NIA | 0 | - | 4.92 | 109,864 |
| Countries That End in BIA | 0 | - | 4.93 | 149,330 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,251 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,546 |
| Countries That End in RIA | 0 | - | 4.93 | 126,899 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,145 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,935 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,876 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,306 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,855 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,650 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,143 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,472 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,646 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,516 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,436 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,131 |
| Countries that End in L | 0 | - | 4.94 | 156,939 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,377 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,293 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,111 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,037 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,081 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,973 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,835 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,249 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,975 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,637 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,988 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,150 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,739 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,066 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,778 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,249 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,467 |
| One Border Countries | 0 | - | 4.98 | 470,597 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,839,519 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,639,254 |
| Countries With the Most Italian Speakers | 0 | - | 4.49 | 58,087 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,058 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,478 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,334 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,677 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,882 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,346 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,557 |
| Countries by National Anthem | 0 | - | 4.93 | 71,331 |
| NATO Countries | 0 | - | 4.98 | 282,161 |
| EU Countries Quiz | 0 | - | 4.99 | 276,300 |
| Recently Independent Countries | 0 | - | 4.98 | 159,626 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,948 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,011 |
