| Landlocked Countries | 0 | - | 4.99 | 417,921 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,260,660 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,493 |
| Himalayan Countries | 0 | - | 4.94 | 136,992 |
| Andean Countries | 0 | - | 4.95 | 83,718 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,963 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,318 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,637 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,212 |
| Danube Countries | 0 | - | 4.97 | 71,553 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,394 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,966 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,454 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,513 |
| European Landlocked Countries | 0 | - | 4.99 | 146,572 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,980 |
| Countries with the Most Species | 0 | - | 4.99 | 102,688 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,117 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,384 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,553 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,241 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,904 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,290 |
| Countries in the Alps | 0 | - | 4.86 | 117,533 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,028 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,169 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,351 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,875 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,982 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,377 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,146 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,100 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,905 |
| 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 | 41,287 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,843 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,109 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,135 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,982 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,987 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,514 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,393 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,789 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,964 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,919 |
| Largest Countries By Category | 0 | - | 4.97 | 157,475 |
| Countries by Countries | 0 | - | 4.96 | 62,746 |
| Country Flags with the Most White | 0 | - | 4.87 | 138,063 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,126 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,449 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,167 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,548 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,228 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,750,104 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,065 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,315 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,573 |
| Island Countries | 0 | - | 4.99 | 709,329 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,917 |
| Northernmost Countries | 0 | - | 4.99 | 360,014 |
| Countries of South America | 0 | - | 5.00 | 921,590 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,385 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,863,176 |
| "Land" Countries | 0 | - | 4.98 | 335,526 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,445 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,675 |
| Countries with Megacities | 0 | - | 4.99 | 249,766 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,515 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,785 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,842 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,767 |
| Countries by Official Language | 0 | - | 4.95 | 194,446 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,271 |
| Countries in their Native Language | 0 | - | 4.99 | 198,005 |
| Independence from Whom | 0 | - | 4.99 | 211,114 |
| Subdivisions by Country | 0 | - | 4.86 | 50,251 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,552 |
| Megadiverse Countries | 0 | - | 4.96 | 134,695 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,143 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,145 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,699 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,988 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,590 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,311 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,815 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,739 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,445 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,912 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,636 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,656 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,859 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,726 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,031 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,278 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,916 |
| World Map Quiz | 0 | - | 4.81 | 64,356 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,067 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,920 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,672 |
| Countries by Founding Story | 0 | - | 4.95 | 76,983 |
| Countries by Road Signs | 0 | - | 4.98 | 53,561 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,302 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,816 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,541 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,056 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,424 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,597 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,744 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,211 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,206 |
| Widest Countries East to West | 0 | - | 4.92 | 129,269 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,360 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,830 |
| 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 | 94,441 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,114 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,463 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,189 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,707 |
| Countries with Double Letters | 0 | - | 4.97 | 94,873 |
| Countries that End in N | 0 | - | 4.95 | 169,431 |
| Countries with Five Letters | 0 | - | 4.96 | 278,062 |
| Countries with Six Letters | 0 | - | 4.94 | 212,216 |
| Countries with W | 0 | - | 4.97 | 159,352 |
| Countries with Z | 0 | - | 4.98 | 289,563 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,562 |
| Countries That End in U | 0 | - | 4.95 | 120,330 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,574 |
| Countries that End in O | 0 | - | 4.92 | 159,131 |
| Countries that End in R | 0 | - | 4.87 | 118,671 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,459 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,134 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,994 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,990 |
| 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 | 197,083 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,300 |
| Countries that End in I | 0 | - | 4.94 | 134,810 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,926 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,522 |
| Countries That End in NIA | 0 | - | 4.92 | 109,441 |
| Countries That End in BIA | 0 | - | 4.93 | 148,741 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,606 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,960 |
| Countries That End in RIA | 0 | - | 4.93 | 126,449 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,545 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,439 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,083 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,425 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,000 |
| 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 | 103,138 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,032 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,144 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,721 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,406 |
| Countries that End in L | 0 | - | 4.94 | 156,465 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,599 |
| 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 | 118,658 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,706 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,558 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,001 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,511 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,974 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,447 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,417 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,908 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,334 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,569 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,594 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,864 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,360 |
| One Border Countries | 0 | - | 4.98 | 467,164 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,213 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,818,842 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,610,467 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,427 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,171 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,538 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,189 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,243 |
| 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 | 272,415 |
| Recently Independent Countries | 0 | - | 4.98 | 158,814 |
| French-Speaking Countries | 0 | - | 4.85 | 270,044 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,724 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,307 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,028 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,294 |
| German-Speaking Countries | 0 | - | 4.91 | 145,052 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,160 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,745 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,804 |
