| Landlocked Countries | 0 | - | 4.99 | 422,354 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,612,515 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,706 |
| Himalayan Countries | 0 | - | 4.95 | 138,906 |
| Andean Countries | 0 | - | 4.93 | 84,723 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,923 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,985 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,541 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,880 |
| Danube Countries | 0 | - | 4.97 | 72,063 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,080 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,470 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,384 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,875 |
| European Landlocked Countries | 0 | - | 4.99 | 147,192 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,720 |
| Countries with the Most Species | 0 | - | 4.99 | 103,275 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,838 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,616 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,736 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,574 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,262 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,709 |
| Countries in the Alps | 0 | - | 4.87 | 118,270 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,360 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,105 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,694 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,635 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,557 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,984 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,718 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,542 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,203 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,894 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,678 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,548 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,260 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,511 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,571 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,995 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,344 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,242 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,139 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,127 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,238 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,265 |
| Largest Countries By Category | 0 | - | 4.97 | 158,282 |
| Countries by Countries | 0 | - | 4.96 | 63,275 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,744 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,304 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,577 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,711 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,781,477 |
| Bordering Countries by HDI Difference | 0 | - | 4.89 | 52,012 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,874 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,619 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,574 |
| Island Countries | 0 | - | 4.99 | 711,178 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,337 |
| Northernmost Countries | 0 | - | 4.99 | 362,137 |
| Countries of South America | 0 | - | 5.00 | 927,902 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,634 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,490 |
| "Land" Countries | 0 | - | 4.98 | 337,443 |
| Lowest HDI Countries with Exceptions | 0 | - | 4.63 | 43,488 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,589 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,998 |
| Countries with Megacities | 0 | - | 4.99 | 264,804 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,830 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,522 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,086 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,601 |
| Countries by Official Language | 0 | - | 4.95 | 195,319 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,484 |
| Countries in their Native Language | 0 | - | 4.99 | 199,115 |
| Independence from Whom | 0 | - | 4.99 | 212,188 |
| Subdivisions by Country | 0 | - | 4.86 | 50,442 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,799 |
| Megadiverse Countries | 0 | - | 4.96 | 135,049 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,166 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,379 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,255 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,121 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,181 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,616 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,525 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,056 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,680 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,160 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,743 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,911 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,227 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,374 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,514 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,294 |
| World Map Quiz | 0 | - | 4.81 | 65,144 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,472 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,389 |
| Countries by Founding Story | 0 | - | 4.95 | 77,408 |
| Countries by Road Signs | 0 | - | 4.98 | 54,049 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,161 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,319 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,030 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,308 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,931 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,047 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,327 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,466 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,601 |
| Widest Countries East to West | 0 | - | 4.92 | 129,684 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,464 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,425 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,134 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,794 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,625 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,907 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,387 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,808 |
| Countries with Double Letters | 0 | - | 4.96 | 96,304 |
| Countries that End in N | 0 | - | 4.95 | 171,200 |
| Countries with Five Letters | 0 | - | 4.96 | 282,626 |
| Countries with Six Letters | 0 | - | 4.94 | 213,636 |
| Countries with W | 0 | - | 4.97 | 160,383 |
| Countries with Z | 0 | - | 4.98 | 291,547 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,756 |
| Countries That End in U | 0 | - | 4.95 | 120,877 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,513 |
| Countries that End in O | 0 | - | 4.92 | 159,534 |
| Countries that End in R | 0 | - | 4.87 | 118,981 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,751 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,163 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,730 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,499 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,420 |
| Countries That End in Y | 0 | - | 4.91 | 185,892 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,969 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,893 |
| Countries that End in I | 0 | - | 4.94 | 135,116 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,149 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,839 |
| Countries That End in NIA | 0 | - | 4.92 | 109,806 |
| Countries That End in BIA | 0 | - | 4.93 | 149,236 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,145 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,449 |
| Countries That End in RIA | 0 | - | 4.93 | 126,824 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,042 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,705 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,749 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,171 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,730 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,591 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,053 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,456 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,551 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,444 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,322 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,017 |
| Countries that End in L | 0 | - | 4.94 | 156,864 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,917 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,277 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,046 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,977 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,019 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,811 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,691 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,145 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,841 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,506 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,893 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,117 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,714 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,892 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,775 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,114 |
| One Border Countries | 0 | - | 4.98 | 470,073 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,490 |
| Five Highest HDI Countries by Continent | 0 | - | 4.55 | 58,490 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,836,168 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,634,485 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,975 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,280 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,204 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,599 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,777 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,248 |
| Countries by National Anthem | 0 | - | 4.93 | 71,302 |
| NATO Countries | 0 | - | 4.98 | 281,688 |
| EU Countries Quiz | 0 | - | 4.99 | 275,723 |
| Recently Independent Countries | 0 | - | 4.98 | 159,511 |
| French-Speaking Countries | 0 | - | 4.85 | 270,942 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,910 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,645 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,480 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,663 |
| German-Speaking Countries | 0 | - | 4.91 | 145,773 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,992 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,312 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,504 |
| Top Five Countries by Religion | 0 | - | 4.93 | 172,320 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,030 |
