| Landlocked Countries | 0 | - | 4.99 | 418,707 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,320,060 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,795 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,893 |
| Himalayan Countries | 0 | - | 4.94 | 137,331 |
| Andean Countries | 0 | - | 4.95 | 83,880 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,172 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,578 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,796 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,316 |
| Danube Countries | 0 | - | 4.97 | 71,628 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,513 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,031 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,599 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,678 |
| European Landlocked Countries | 0 | - | 4.99 | 146,745 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,098 |
| Countries with the Most Species | 0 | - | 4.99 | 102,884 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,234 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,425 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,580 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,287 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,969 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,345 |
| Countries in the Alps | 0 | - | 4.87 | 117,646 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,107 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,321 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,392 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,959 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,065 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,429 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,251 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,164 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,951 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,533 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,465 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,326 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,905 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,175 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,189 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,138 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,047 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,558 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,492 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,273 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,172 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,981 |
| Largest Countries By Category | 0 | - | 4.97 | 157,603 |
| Countries by Countries | 0 | - | 4.96 | 62,818 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,174 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,153 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,465 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,303 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,755,503 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,788 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,547 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,980 |
| Island Countries | 0 | - | 4.99 | 709,658 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,827 |
| Northernmost Countries | 0 | - | 4.99 | 360,376 |
| Countries of South America | 0 | - | 5.00 | 922,619 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,654 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,735 |
| "Land" Countries | 0 | - | 4.98 | 335,748 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,241 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,957 |
| Countries with Megacities | 0 | - | 4.99 | 258,287 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,827 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,949 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,109 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,961 |
| Countries by Official Language | 0 | - | 4.95 | 194,601 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,473 |
| Countries in their Native Language | 0 | - | 4.99 | 198,146 |
| Independence from Whom | 0 | - | 4.99 | 211,259 |
| Subdivisions by Country | 0 | - | 4.86 | 50,277 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,662 |
| Megadiverse Countries | 0 | - | 4.96 | 134,751 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,522 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,175 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,738 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,008 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,683 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,363 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,942 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,830 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,471 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,980 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,905 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,701 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,976 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,759 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,137 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,312 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,136 |
| World Map Quiz | 0 | - | 4.81 | 64,492 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,517 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,013 |
| Countries by Founding Story | 0 | - | 4.95 | 77,045 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,463 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,905 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,617 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,283 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,495 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,656 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,810 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,249 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,267 |
| Widest Countries East to West | 0 | - | 4.92 | 129,348 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,377 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,936 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,985 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,499 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,194 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,526 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,224 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,724 |
| Countries with Double Letters | 0 | - | 4.97 | 95,053 |
| Countries that End in N | 0 | - | 4.95 | 169,922 |
| Countries with Five Letters | 0 | - | 4.96 | 279,943 |
| Countries with Six Letters | 0 | - | 4.94 | 212,434 |
| Countries with W | 0 | - | 4.97 | 159,498 |
| Countries with Z | 0 | - | 4.98 | 289,759 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,702 |
| Countries That End in U | 0 | - | 4.95 | 120,399 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,723 |
| Countries that End in O | 0 | - | 4.92 | 159,184 |
| Countries that End in R | 0 | - | 4.87 | 118,727 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,502 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,289 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,083 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,067 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,653 |
| Countries That End in Y | 0 | - | 4.90 | 185,642 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,196 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,396 |
| Countries that End in I | 0 | - | 4.94 | 134,855 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,045 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,565 |
| Countries That End in NIA | 0 | - | 4.92 | 109,502 |
| Countries That End in BIA | 0 | - | 4.93 | 148,826 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,690 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,031 |
| Countries That End in RIA | 0 | - | 4.93 | 126,519 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,606 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,633 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,196 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,541 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,090 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,303 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,665 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,216 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,103 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,186 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,804 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,513 |
| Countries that End in L | 0 | - | 4.94 | 156,530 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,916 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,152 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,826 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,709 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,754 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,747 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,135 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,592 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,094 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,586 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,565 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,942 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,589 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,647 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,001 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,648 |
| One Border Countries | 0 | - | 4.98 | 467,572 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,821,867 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,614,047 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,538 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,368 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,658 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,252 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,348 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,911 |
| Countries by National Anthem | 0 | - | 4.93 | 71,174 |
| NATO Countries | 0 | - | 4.98 | 279,214 |
| EU Countries Quiz | 0 | - | 4.99 | 272,837 |
| Recently Independent Countries | 0 | - | 4.98 | 158,989 |
| French-Speaking Countries | 0 | - | 4.85 | 270,179 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,753 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,525 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,394 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,824 |
| German-Speaking Countries | 0 | - | 4.91 | 145,294 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,227 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,791 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,055 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,700 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,751 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,329 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,575 |
| Olympic Host Countries | 0 | - | 4.98 | 200,338 |
