| Landlocked Countries | 0 | - | 4.99 | 418,183 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,284,448 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,614 |
| Himalayan Countries | 0 | - | 4.94 | 137,099 |
| Andean Countries | 0 | - | 4.95 | 83,767 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,011 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,389 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,688 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,251 |
| Danube Countries | 0 | - | 4.97 | 71,579 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,440 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,983 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,515 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,568 |
| European Landlocked Countries | 0 | - | 4.99 | 146,686 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,018 |
| Countries with the Most Species | 0 | - | 4.99 | 102,796 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,154 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,399 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,558 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,256 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,928 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,309 |
| Countries in the Alps | 0 | - | 4.87 | 117,583 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,058 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,239 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,367 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,906 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,020 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,393 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,184 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,126 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,927 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,490 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,443 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,300 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,870 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,131 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,157 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,032 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,007 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,533 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,423 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,972 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,056 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,940 |
| Largest Countries By Category | 0 | - | 4.97 | 157,528 |
| Countries by Countries | 0 | - | 4.96 | 62,773 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,115 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,136 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,454 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,255 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,752,394 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,320 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,400 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,736 |
| Island Countries | 0 | - | 4.99 | 709,441 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,252 |
| Northernmost Countries | 0 | - | 4.99 | 360,160 |
| Countries of South America | 0 | - | 5.00 | 922,040 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,896 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,864,279 |
| "Land" Countries | 0 | - | 4.98 | 335,620 |
| Countries With the Most Expats | 0 | - | 4.69 | 49,460 |
| Countries with the Most Immigrants per Capita | 0 | - | 4.53 | 62,203 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,100 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,762 |
| Countries with Megacities | 0 | - | 4.99 | 249,942 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,610 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,839 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,920 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,820 |
| Countries by Official Language | 0 | - | 4.95 | 194,503 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,344 |
| Countries in their Native Language | 0 | - | 4.99 | 198,068 |
| Independence from Whom | 0 | - | 4.99 | 211,176 |
| Subdivisions by Country | 0 | - | 4.86 | 50,262 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,592 |
| Megadiverse Countries | 0 | - | 4.96 | 134,718 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,187 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,152 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,716 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,997 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,637 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,329 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,866 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,788 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,455 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,951 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,769 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,671 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,927 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,743 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,086 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,285 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,993 |
| World Map Quiz | 0 | - | 4.81 | 64,402 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,224 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,961 |
| Countries by Founding Story | 0 | - | 4.95 | 77,007 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,365 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,855 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,570 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,129 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,448 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,627 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,768 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,226 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,225 |
| Widest Countries East to West | 0 | - | 4.92 | 129,312 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,372 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,877 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,976 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,465 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,145 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,484 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,208 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,713 |
| Countries with Double Letters | 0 | - | 4.97 | 94,964 |
| Countries that End in N | 0 | - | 4.95 | 169,676 |
| Countries with Five Letters | 0 | - | 4.96 | 279,081 |
| Countries with Six Letters | 0 | - | 4.94 | 212,319 |
| Countries with W | 0 | - | 4.97 | 159,419 |
| Countries with Z | 0 | - | 4.98 | 289,648 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,631 |
| Countries That End in U | 0 | - | 4.95 | 120,361 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,650 |
| Countries that End in O | 0 | - | 4.92 | 159,152 |
| Countries that End in R | 0 | - | 4.87 | 118,691 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,475 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,201 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,034 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,034 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,618 |
| Countries That End in Y | 0 | - | 4.90 | 185,609 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,135 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,341 |
| Countries that End in I | 0 | - | 4.94 | 134,830 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,988 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,539 |
| Countries That End in NIA | 0 | - | 4.92 | 109,465 |
| Countries That End in BIA | 0 | - | 4.93 | 148,782 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,640 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,996 |
| Countries That End in RIA | 0 | - | 4.93 | 126,476 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,569 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,516 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,129 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,469 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,028 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,274 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,623 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,173 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,060 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,164 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,752 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,454 |
| Countries that End in L | 0 | - | 4.94 | 156,490 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,740 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,144 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,802 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,675 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,725 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,645 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,058 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,545 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,027 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,506 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,503 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,925 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,342 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,577 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,614 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,292 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,472 |
| One Border Countries | 0 | - | 4.98 | 467,315 |
| Countries by Net Migration | 0 | - | 4.52 | 83,682 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,820,089 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,611,838 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,463 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,248 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,577 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,213 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,288 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,844 |
| Countries by National Anthem | 0 | - | 4.93 | 71,166 |
| NATO Countries | 0 | - | 4.98 | 278,985 |
| EU Countries Quiz | 0 | - | 4.99 | 272,576 |
| Recently Independent Countries | 0 | - | 4.98 | 158,931 |
| French-Speaking Countries | 0 | - | 4.85 | 270,096 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,737 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,369 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,189 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,529 |
| German-Speaking Countries | 0 | - | 4.91 | 145,190 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,183 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,769 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,903 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,557 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,621 |
