| Landlocked Countries | 0 | - | 4.99 | 417,903 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,259,391 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,486 |
| Himalayan Countries | 0 | - | 4.94 | 136,986 |
| Andean Countries | 0 | - | 4.95 | 83,717 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,960 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,315 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,636 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,208 |
| Danube Countries | 0 | - | 4.97 | 71,551 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,390 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,961 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,450 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,507 |
| European Landlocked Countries | 0 | - | 4.99 | 146,553 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,975 |
| Countries with the Most Species | 0 | - | 4.99 | 102,683 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,109 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,383 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,553 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,240 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,903 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,289 |
| Countries in the Alps | 0 | - | 4.86 | 117,530 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,027 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,169 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,349 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,873 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,979 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,375 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,145 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,099 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,902 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,467 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,428 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,283 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,841 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,109 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,131 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,980 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,986 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,511 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,392 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,780 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,963 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,919 |
| Largest Countries By Category | 0 | - | 4.97 | 157,470 |
| Countries by Countries | 0 | - | 4.96 | 62,745 |
| Country Flags with the Most White | 0 | - | 4.87 | 138,062 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,126 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,448 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,159 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,545 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,225 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,750,008 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,054 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,313 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,562 |
| Island Countries | 0 | - | 4.99 | 709,326 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,905 |
| Northernmost Countries | 0 | - | 4.99 | 360,005 |
| Countries of South America | 0 | - | 5.00 | 921,562 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,342 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,863,137 |
| "Land" Countries | 0 | - | 4.98 | 335,525 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,407 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,672 |
| Countries with Megacities | 0 | - | 4.99 | 249,757 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,512 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,783 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,839 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,758 |
| Countries by Official Language | 0 | - | 4.95 | 194,444 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,266 |
| Countries in their Native Language | 0 | - | 4.99 | 198,003 |
| Independence from Whom | 0 | - | 4.99 | 211,110 |
| Subdivisions by Country | 0 | - | 4.86 | 50,251 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,552 |
| Megadiverse Countries | 0 | - | 4.96 | 134,692 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,137 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,144 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,696 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,987 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,588 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,308 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,812 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,736 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,445 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,910 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,634 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,654 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,850 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,725 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,028 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,278 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,911 |
| World Map Quiz | 0 | - | 4.81 | 64,350 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,059 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,917 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,671 |
| Countries by Founding Story | 0 | - | 4.95 | 76,982 |
| Countries by Road Signs | 0 | - | 4.98 | 53,557 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,299 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,814 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,539 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,051 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,422 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,595 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,743 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,211 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,203 |
| Widest Countries East to West | 0 | - | 4.92 | 129,268 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,359 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,829 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,965 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,439 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,113 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,463 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,187 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,707 |
| Countries with Double Letters | 0 | - | 4.97 | 94,864 |
| Countries that End in N | 0 | - | 4.95 | 169,419 |
| Countries with Five Letters | 0 | - | 4.96 | 277,956 |
| Countries with Six Letters | 0 | - | 4.94 | 212,208 |
| Countries with W | 0 | - | 4.97 | 159,350 |
| Countries with Z | 0 | - | 4.98 | 289,557 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,554 |
| Countries That End in U | 0 | - | 4.95 | 120,329 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,569 |
| Countries that End in O | 0 | - | 4.92 | 159,131 |
| Countries that End in R | 0 | - | 4.87 | 118,670 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,459 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,131 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,991 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,987 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,584 |
| Countries That End in Y | 0 | - | 4.90 | 185,588 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,082 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,299 |
| Countries that End in I | 0 | - | 4.94 | 134,810 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,924 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,519 |
| Countries That End in NIA | 0 | - | 4.92 | 109,439 |
| Countries That End in BIA | 0 | - | 4.93 | 148,741 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,602 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,959 |
| Countries That End in RIA | 0 | - | 4.93 | 126,446 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,545 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,434 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,080 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,422 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,999 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,260 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,589 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,133 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,032 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,143 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,718 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,405 |
| Countries that End in L | 0 | - | 4.94 | 156,464 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,594 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,136 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,786 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,656 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,706 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,554 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,999 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,508 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,972 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,445 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,396 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,906 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,332 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,567 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,592 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,838 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,357 |
| One Border Countries | 0 | - | 4.98 | 467,153 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,212 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,818,779 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,610,354 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,426 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,167 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,534 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,187 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,238 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,804 |
| Countries by National Anthem | 0 | - | 4.92 | 71,159 |
| NATO Countries | 0 | - | 4.98 | 278,813 |
| EU Countries Quiz | 0 | - | 4.99 | 272,406 |
| Recently Independent Countries | 0 | - | 4.98 | 158,804 |
| French-Speaking Countries | 0 | - | 4.85 | 270,044 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,722 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,306 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,021 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,287 |
| German-Speaking Countries | 0 | - | 4.91 | 145,039 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,159 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,743 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,794 |
