| Countries of the World Quiz | 0 | - | 5.00 | 47,967,291 |
| Landlocked Countries | 0 | - | 4.99 | 427,224 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,812,195 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,590 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,033 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,342 |
| Island Countries | 0 | - | 4.99 | 713,005 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,900 |
| Himalayan Countries | 0 | - | 4.93 | 140,811 |
| Andean Countries | 0 | - | 4.94 | 85,795 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,912 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,480 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,461 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,686 |
| Danube Countries | 0 | - | 4.97 | 72,552 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,798 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,971 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,435 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,910 |
| European Landlocked Countries | 0 | - | 4.99 | 147,738 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,535 |
| Countries with the Most Species | 0 | - | 4.99 | 103,644 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,634 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,813 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,952 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,923 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,679 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,126 |
| Countries in the Alps | 0 | - | 4.87 | 118,969 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,982 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,129 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,053 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,170 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,126 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,389 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,593 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,990 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,513 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,312 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,953 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,831 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,673 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,924 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,019 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,144 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,730 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,429 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,127 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,202 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,833 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,293 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,489 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,614 |
| Largest Countries By Category | 0 | - | 4.97 | 159,087 |
| Countries by Countries | 0 | - | 4.97 | 63,804 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,961 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,478 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,709 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,974 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,439 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,450 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,704 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,227 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,135 |
| Northernmost Countries | 0 | - | 4.99 | 364,585 |
| Countries of South America | 0 | - | 5.00 | 934,242 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,459 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,924 |
| "Land" Countries | 0 | - | 4.98 | 338,989 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,252 |
| Country Picture Puzzle Game #1 | 0 | - | 4.86 | 86,946 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 77,130 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,414 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,411 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,989 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,968 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,493 |
| Countries with Megacities | 0 | - | 4.99 | 267,839 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,142 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,336 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,470 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,433 |
| Countries by Official Language | 0 | - | 4.95 | 196,214 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,940 |
| Countries in their Native Language | 0 | - | 4.99 | 199,953 |
| Independence from Whom | 0 | - | 4.99 | 213,398 |
| Subdivisions by Country | 0 | - | 4.87 | 50,665 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,662 |
| Megadiverse Countries | 0 | - | 4.96 | 148,993 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,135 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,575 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,805 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,257 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,467 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,925 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,274 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,625 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,165 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,286 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,764 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,488 |
| Hindu Countries | 0 | - | 4.86 | 50,661 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,507 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,217 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,638 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,974 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,720 |
| World Map Quiz | 0 | - | 4.81 | 65,924 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,880 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,878 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,815 |
| Countries by Founding Story | 0 | - | 4.95 | 77,906 |
| Countries by Road Signs | 0 | - | 4.98 | 54,447 |
| Countries in a JetPunk Fish of the World Map | 0 | - | 4.99 | 60,748 |
| Countries in a Blue JetPunk Fish of the World Map | 0 | - | 4.92 | 72,432 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,510 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,233 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,704 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,926 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,547 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,662 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,849 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,764 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,938 |
| Widest Countries East to West | 0 | - | 4.92 | 130,849 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,628 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,399 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,561 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,158 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,106 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,613 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,534 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,922 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,979 |
| Countries with Double Letters | 0 | - | 4.96 | 97,621 |
| Countries that End in N | 0 | - | 4.95 | 172,624 |
| Countries with Five Letters | 0 | - | 4.96 | 284,632 |
| Countries with Six Letters | 0 | - | 4.94 | 214,954 |
| Countries with W | 0 | - | 4.96 | 161,307 |
| Countries with Z | 0 | - | 4.98 | 292,999 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,669 |
| Countries That End in U | 0 | - | 4.95 | 121,392 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,425 |
| Countries that End in O | 0 | - | 4.92 | 160,370 |
| Countries that End in R | 0 | - | 4.87 | 119,278 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,061 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,147 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 185,673 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,194 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,754 |
| Countries That End in Y | 0 | - | 4.91 | 186,175 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,264 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,419 |
| Countries that End in I | 0 | - | 4.94 | 135,423 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,256 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,147 |
| Countries That End in NIA | 0 | - | 4.92 | 110,159 |
| Countries That End in BIA | 0 | - | 4.93 | 149,738 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,931 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,906 |
| Countries That End in RIA | 0 | - | 4.93 | 127,146 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,544 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,937 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,389 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,854 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,402 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,919 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,458 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,607 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,056 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,733 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,906 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,611 |
| Countries that End in L | 0 | - | 4.94 | 157,247 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,579 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,379 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,884 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,156 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,541 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,657 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,308 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,521 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,408 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,191 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,319 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,297 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,970 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,874 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,362 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,853,163 |
| One Border Countries | 0 | - | 4.98 | 472,568 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 62,097 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,659,486 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,465 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,515 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,813 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,994 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,359 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,719 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,375 |
