| World Map Quiz | 0 | - | 4.81 | 63,415 |
| Landlocked Countries | 0 | - | 4.99 | 413,141 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,877,024 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,377 |
| Himalayan Countries | 0 | - | 4.95 | 135,155 |
| Andean Countries | 0 | - | 4.94 | 82,725 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,145 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,076 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,818 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,510 |
| Danube Countries | 0 | - | 4.97 | 71,029 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,693 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,485 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,359 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,278 |
| European Landlocked Countries | 0 | - | 4.99 | 145,699 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,106 |
| Countries with the Most Species | 0 | - | 4.99 | 95,215 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,258 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,187 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,351 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,926 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,539 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,897 |
| Countries in the Alps | 0 | - | 4.87 | 116,741 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,508 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,154 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,969 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,362 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,096 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,958 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,507 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,711 |
| Largest Country by Body of Water | 0 | - | 4.96 | 56,847 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,007 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,178 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,012 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,396 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,701 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,707 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,955 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,593 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,218 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,720 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,989 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,473 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,563 |
| Largest Countries By Category | 0 | - | 4.97 | 156,671 |
| Countries by Countries | 0 | - | 4.96 | 62,207 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,291 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,945 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,310 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,702 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,712,193 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,327 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,945 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,289 |
| Island Countries | 0 | - | 4.99 | 707,383 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,773 |
| Northernmost Countries | 0 | - | 4.99 | 357,429 |
| Countries of South America | 0 | - | 5.00 | 913,892 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,254 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,370 |
| "Land" Countries | 0 | - | 4.98 | 333,502 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,841 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,855 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,953 |
| Countries with Megacities | 0 | - | 4.99 | 246,393 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,865 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,775 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,321 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,726 |
| Countries by Official Language | 0 | - | 4.95 | 192,658 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,971 |
| Countries in their Native Language | 0 | - | 4.99 | 196,525 |
| Independence from Whom | 0 | - | 4.99 | 209,553 |
| Subdivisions by Country | 0 | - | 4.86 | 50,041 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,637 |
| Megadiverse Countries | 0 | - | 4.97 | 133,851 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,700 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,895 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,393 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,846 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,580 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,961 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,638 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,094 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,193 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,726 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,453 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,383 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,456 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,473 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,635 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,997 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,419 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,376 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,262 |
| Countries by Founding Story | 0 | - | 4.95 | 76,475 |
| Countries by Road Signs | 0 | - | 4.98 | 53,040 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,223 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,919 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,882 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,585 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,805 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,001 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,209 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,905 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,287 |
| Widest Countries East to West | 0 | - | 4.92 | 128,553 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,201 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,138 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,537 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,647 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,556 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,974 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,037 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,557 |
| Countries with Double Letters | 0 | - | 4.97 | 93,275 |
| Countries that End in N | 0 | - | 4.94 | 156,339 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,552 |
| Countries with Six Letters | 0 | - | 4.93 | 210,250 |
| Countries with W | 0 | - | 4.97 | 158,154 |
| Countries with Z | 0 | - | 4.98 | 287,729 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,466 |
| Countries That End in U | 0 | - | 4.95 | 119,474 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,435 |
| Countries that End in O | 0 | - | 4.92 | 158,504 |
| Countries that End in R | 0 | - | 4.87 | 118,236 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,827 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,915 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,232 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,422 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,698 |
| Countries That End in Y | 0 | - | 4.90 | 185,172 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,243 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,593 |
| Countries that End in I | 0 | - | 4.94 | 134,355 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,086 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,161 |
| Countries That End in NIA | 0 | - | 4.92 | 108,953 |
| Countries That End in BIA | 0 | - | 4.92 | 147,643 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,005 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,434 |
| Countries That End in RIA | 0 | - | 4.93 | 126,038 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,953 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,065 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,472 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,851 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,293 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,891 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,059 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,586 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,436 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,787 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,062 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,735 |
| Countries that End in L | 0 | - | 4.94 | 155,671 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,884 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,642 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,973 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,481 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,255 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,391 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,526 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,001 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,870 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,110 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,301 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,465 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,583 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,156 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,404 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,277 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,101 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,387 |
| One Border Countries | 0 | - | 4.98 | 463,873 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,438,613 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,791 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,348 |
| Asia Map Quiz | 0 | - | 4.99 | 906,329 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,609 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,798,833 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.86 | 88,430 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,585,224 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,758 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,775 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,792 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,427 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,528 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,187 |
| Countries by National Anthem | 0 | - | 4.92 | 71,004 |
| NATO Countries | 0 | - | 4.98 | 275,369 |
| EU Countries Quiz | 0 | - | 4.99 | 269,634 |
| Recently Independent Countries | 0 | - | 4.98 | 157,910 |
| French-Speaking Countries | 0 | - | 4.85 | 268,668 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,348 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,826 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,666 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,919 |
