| Landlocked Countries | 0 | - | 4.99 | 416,525 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,152,380 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,866 |
| Himalayan Countries | 0 | - | 4.95 | 136,447 |
| Andean Countries | 0 | - | 4.95 | 83,453 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,724 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,954 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,399 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,000 |
| Danube Countries | 0 | - | 4.97 | 71,381 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,191 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,839 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,126 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,086 |
| European Landlocked Countries | 0 | - | 4.99 | 146,117 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,740 |
| Countries with the Most Species | 0 | - | 4.99 | 101,273 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,871 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,323 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,502 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,147 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,798 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,172 |
| Countries in the Alps | 0 | - | 4.86 | 117,307 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,884 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,856 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,243 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,731 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,808 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,243 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,969 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,988 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,790 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,320 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,352 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,198 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,709 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,986 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,996 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,679 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,881 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,421 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,218 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,918 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,535 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,814 |
| Largest Countries By Category | 0 | - | 4.97 | 157,233 |
| Countries by Countries | 0 | - | 4.96 | 62,580 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,859 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,075 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,409 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,072 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,739,624 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,687 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,783 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,663 |
| Island Countries | 0 | - | 4.99 | 708,760 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,174 |
| Northernmost Countries | 0 | - | 4.99 | 359,302 |
| Countries of South America | 0 | - | 5.00 | 919,486 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,418 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,858,121 |
| "Land" Countries | 0 | - | 4.98 | 334,547 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,370,093 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,234 |
| Countries with Megacities | 0 | - | 4.99 | 248,864 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,090 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,522 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,449 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,473 |
| Countries by Official Language | 0 | - | 4.95 | 193,973 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,481 |
| Countries in their Native Language | 0 | - | 4.99 | 197,601 |
| Independence from Whom | 0 | - | 4.99 | 210,762 |
| Subdivisions by Country | 0 | - | 4.86 | 50,190 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,299 |
| Megadiverse Countries | 0 | - | 4.96 | 134,526 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,799 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,072 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,620 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,946 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,423 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,207 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,559 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,537 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,362 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,804 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,142 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,577 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,680 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,634 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,847 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,195 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,503 |
| World Map Quiz | 0 | - | 4.81 | 64,057 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,298 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,679 |
| Countries by Founding Story | 0 | - | 4.95 | 76,857 |
| Countries by Road Signs | 0 | - | 4.98 | 53,396 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,036 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,651 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,381 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,666 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,253 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,448 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,609 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,139 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,628 |
| Widest Countries East to West | 0 | - | 4.92 | 129,128 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,324 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,628 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,906 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,944 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,960 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,341 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,076 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,668 |
| Countries with Double Letters | 0 | - | 4.96 | 94,065 |
| Countries that End in N | 0 | - | 4.95 | 164,691 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,496 |
| Countries with Six Letters | 0 | - | 4.93 | 211,064 |
| Countries with W | 0 | - | 4.97 | 158,755 |
| Countries with Z | 0 | - | 4.98 | 288,674 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,991 |
| Countries That End in U | 0 | - | 4.95 | 119,876 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,118 |
| Countries that End in O | 0 | - | 4.92 | 158,833 |
| Countries that End in R | 0 | - | 4.87 | 118,485 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,075 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,689 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,711 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,794 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,356 |
| Countries That End in Y | 0 | - | 4.90 | 185,400 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,805 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,059 |
| Countries that End in I | 0 | - | 4.94 | 134,651 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,669 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,395 |
| Countries That End in NIA | 0 | - | 4.92 | 109,281 |
| Countries That End in BIA | 0 | - | 4.93 | 148,538 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,408 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,753 |
| Countries That End in RIA | 0 | - | 4.93 | 126,320 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,309 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,041 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,841 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,181 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,754 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,132 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,421 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,924 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,819 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,986 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,499 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,176 |
| Countries that End in L | 0 | - | 4.94 | 156,268 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,813 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,060 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,706 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,553 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,608 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,286 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,789 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,294 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,803 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,226 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,036 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,867 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,285 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,513 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,501 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,689 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,784 |
| One Border Countries | 0 | - | 4.98 | 466,337 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,812,968 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,603,422 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,261 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,864 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,309 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,066 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,074 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,618 |
| Countries by National Anthem | 0 | - | 4.92 | 71,110 |
| NATO Countries | 0 | - | 4.98 | 277,993 |
| EU Countries Quiz | 0 | - | 4.99 | 271,544 |
| Recently Independent Countries | 0 | - | 4.98 | 158,360 |
| French-Speaking Countries | 0 | - | 4.85 | 269,726 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,499 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,881 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,297 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,284 |
| German-Speaking Countries | 0 | - | 4.91 | 143,371 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,011 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,631 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,323 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,959 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,123 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 112,069 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,293 |
