| Landlocked Countries | 0 | - | 4.99 | 421,827 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,572,078 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,111 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,377 |
| Himalayan Countries | 0 | - | 4.95 | 138,650 |
| Andean Countries | 0 | - | 4.93 | 84,573 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,765 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,767 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,396 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,784 |
| Danube Countries | 0 | - | 4.97 | 71,993 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,996 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,408 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,272 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,753 |
| European Landlocked Countries | 0 | - | 4.99 | 147,129 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,615 |
| Countries with the Most Species | 0 | - | 4.99 | 103,227 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,736 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,580 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,716 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,531 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,215 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,645 |
| Countries in the Alps | 0 | - | 4.87 | 118,186 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,024 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,006 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,633 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,585 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,494 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,939 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,660 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,475 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,171 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,829 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,644 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,516 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,212 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,454 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,504 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,864 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,294 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,583 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,055 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,863 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,060 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,214 |
| Largest Countries By Category | 0 | - | 4.97 | 158,193 |
| Countries by Countries | 0 | - | 4.96 | 63,203 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,665 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,279 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,562 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,668 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,777,788 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,474 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,465 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,112 |
| Island Countries | 0 | - | 4.99 | 710,997 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,696 |
| Northernmost Countries | 0 | - | 4.99 | 361,898 |
| Countries of South America | 0 | - | 5.00 | 927,189 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,638 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,876,850 |
| "Land" Countries | 0 | - | 4.98 | 337,295 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,305 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,845 |
| Countries with Megacities | 0 | - | 4.99 | 264,467 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,708 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,454 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,969 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,518 |
| Countries by Official Language | 0 | - | 4.95 | 195,226 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,326 |
| Countries in their Native Language | 0 | - | 4.99 | 199,014 |
| Independence from Whom | 0 | - | 4.99 | 212,057 |
| Subdivisions by Country | 0 | - | 4.86 | 50,425 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,702 |
| Megadiverse Countries | 0 | - | 4.96 | 135,001 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,055 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,342 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,229 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,096 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,123 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,588 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,451 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,024 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,647 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,140 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,653 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,867 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,195 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,954 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,341 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,484 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,147 |
| World Map Quiz | 0 | - | 4.81 | 65,059 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,222 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,342 |
| Countries by Founding Story | 0 | - | 4.95 | 77,355 |
| Countries by Road Signs | 0 | - | 4.98 | 54,000 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,062 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,265 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,983 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,154 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,875 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,996 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,286 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,434 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,562 |
| Widest Countries East to West | 0 | - | 4.92 | 129,629 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,448 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,361 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,116 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,759 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,585 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,855 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,370 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,796 |
| Countries with Double Letters | 0 | - | 4.96 | 96,199 |
| Countries that End in N | 0 | - | 4.95 | 171,076 |
| Countries with Five Letters | 0 | - | 4.96 | 282,382 |
| Countries with Six Letters | 0 | - | 4.94 | 213,503 |
| Countries with W | 0 | - | 4.97 | 160,297 |
| Countries with Z | 0 | - | 4.98 | 291,402 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,670 |
| Countries That End in U | 0 | - | 4.95 | 120,833 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,424 |
| Countries that End in O | 0 | - | 4.92 | 159,495 |
| Countries that End in R | 0 | - | 4.87 | 118,958 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,713 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,050 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,670 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,455 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,369 |
| Countries That End in Y | 0 | - | 4.91 | 185,859 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,884 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,830 |
| Countries that End in I | 0 | - | 4.94 | 135,079 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,068 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,810 |
| Countries That End in NIA | 0 | - | 4.92 | 109,769 |
| Countries That End in BIA | 0 | - | 4.93 | 149,177 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,089 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,404 |
| Countries That End in RIA | 0 | - | 4.93 | 126,796 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,002 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,547 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,674 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,081 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,635 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,563 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,005 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,437 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,507 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,405 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,262 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,962 |
| Countries that End in L | 0 | - | 4.94 | 156,820 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,654 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,258 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,007 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,942 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,980 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,709 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,627 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,975 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,516 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,402 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,845 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,089 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,701 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,863 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,969 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,910 |
| One Border Countries | 0 | - | 4.98 | 469,800 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,834,300 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,631,491 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,902 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,155 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,123 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,543 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,720 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,206 |
| Countries by National Anthem | 0 | - | 4.93 | 71,285 |
| NATO Countries | 0 | - | 4.98 | 281,435 |
| EU Countries Quiz | 0 | - | 4.99 | 275,387 |
| Recently Independent Countries | 0 | - | 4.98 | 159,452 |
| French-Speaking Countries | 0 | - | 4.85 | 270,816 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,891 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,483 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,216 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,324 |
| German-Speaking Countries | 0 | - | 4.91 | 145,729 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,954 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,277 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,269 |
| Top Five Countries by Religion | 0 | - | 4.93 | 172,159 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,851 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,012 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 112,519 |
