| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,624 |
| Countries with Glaciers | 0 | - | 4.97 | 104,911 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,447 |
| Least-Forested Countries | 0 | - | 4.53 | 65,073 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,212,985 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,541 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,746 |
| Landlocked Countries | 0 | - | 4.99 | 417,273 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,508 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,745,302 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,219 |
| Himalayan Countries | 0 | - | 4.95 | 136,764 |
| Andean Countries | 0 | - | 4.95 | 83,604 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,866 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,168 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,532 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,126 |
| Danube Countries | 0 | - | 4.97 | 71,488 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,304 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,904 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,298 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,298 |
| European Landlocked Countries | 0 | - | 4.99 | 146,197 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,879 |
| Countries with the Most Species | 0 | - | 4.99 | 102,387 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,009 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,357 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,536 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,205 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,857 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,234 |
| Countries in the Alps | 0 | - | 4.86 | 117,435 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,964 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,046 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,305 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,808 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,905 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,322 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,073 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,044 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,861 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,394 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,398 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,241 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,790 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,052 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,065 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,840 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,942 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,468 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,310 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,370 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,751 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,876 |
| Largest Countries By Category | 0 | - | 4.97 | 157,356 |
| Countries by Countries | 0 | - | 4.96 | 62,672 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,956 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,109 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,423 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,147 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,562 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,107 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,228 |
| Island Countries | 0 | - | 4.99 | 709,097 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,131 |
| Northernmost Countries | 0 | - | 4.99 | 359,723 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,552 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,323 |
| Countries of South America | 0 | - | 5.00 | 920,537 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,127 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,941 |
| "Land" Countries | 0 | - | 4.98 | 335,201 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,112 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,049 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,493 |
| Countries with Megacities | 0 | - | 4.99 | 249,427 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,346 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,672 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,675 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,643 |
| Countries by Official Language | 0 | - | 4.95 | 194,245 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,067 |
| Countries in their Native Language | 0 | - | 4.99 | 197,844 |
| Independence from Whom | 0 | - | 4.99 | 210,975 |
| Subdivisions by Country | 0 | - | 4.86 | 50,224 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,450 |
| Megadiverse Countries | 0 | - | 4.96 | 134,604 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,005 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,108 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,661 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,965 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,515 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,275 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,706 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,598 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,409 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,822 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,475 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,620 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,717 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,685 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,893 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,251 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,749 |
| World Map Quiz | 0 | - | 4.81 | 64,230 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,717 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,774 |
| Countries by Founding Story | 0 | - | 4.95 | 76,936 |
| Countries by Road Signs | 0 | - | 4.98 | 53,487 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,184 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,741 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,474 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,888 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,351 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,523 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,686 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,181 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,141 |
| Widest Countries East to West | 0 | - | 4.92 | 129,221 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,342 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,739 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,946 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,997 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,046 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,420 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,157 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,691 |
| Countries with Double Letters | 0 | - | 4.96 | 94,599 |
| Countries that End in N | 0 | - | 4.95 | 168,689 |
| Countries with Five Letters | 0 | - | 4.96 | 273,309 |
| Countries with Six Letters | 0 | - | 4.93 | 211,861 |
| Countries with W | 0 | - | 4.97 | 159,169 |
| Countries with Z | 0 | - | 4.98 | 289,258 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,368 |
| Countries That End in U | 0 | - | 4.95 | 120,204 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,391 |
| Countries that End in O | 0 | - | 4.92 | 159,033 |
| Countries that End in R | 0 | - | 4.87 | 118,610 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,388 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,966 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,884 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,913 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,497 |
| Countries That End in Y | 0 | - | 4.90 | 185,521 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,975 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,197 |
| Countries that End in I | 0 | - | 4.94 | 134,733 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,804 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,460 |
| Countries That End in NIA | 0 | - | 4.92 | 109,364 |
| Countries That End in BIA | 0 | - | 4.93 | 148,655 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,516 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,868 |
| Countries That End in RIA | 0 | - | 4.93 | 126,400 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,445 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,248 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,970 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,294 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,922 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,203 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,526 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,052 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,930 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,091 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,627 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,321 |
| Countries that End in L | 0 | - | 4.94 | 156,377 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,247 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,106 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,749 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,607 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,666 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,440 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,898 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,431 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,888 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,344 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,099 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,892 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,315 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,543 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,555 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,920 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,109 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,136 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,816,182 |
| One Border Countries | 0 | - | 4.98 | 466,797 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,607,198 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,398 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,117 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,165 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,358 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,051 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,434 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,135 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,177 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,722 |
| Majority Muslim Countries | 0 | - | 4.98 | 372,294 |
| Countries by National Anthem | 0 | - | 4.92 | 71,142 |
| NATO Countries | 0 | - | 4.98 | 278,477 |
