| Landlocked Countries | 0 | - | 4.99 | 427,915 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,023,053 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,215 |
| Himalayan Countries | 0 | - | 4.93 | 141,094 |
| Andean Countries | 0 | - | 4.94 | 85,946 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,046 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,692 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,594 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,790 |
| Danube Countries | 0 | - | 4.97 | 72,629 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,900 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,040 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,586 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,065 |
| European Landlocked Countries | 0 | - | 4.99 | 147,844 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,640 |
| Countries with the Most Species | 0 | - | 4.99 | 103,686 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,747 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,840 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,985 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,972 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,724 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,206 |
| Countries in the Alps | 0 | - | 4.87 | 119,079 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,178 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,290 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,105 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,236 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,214 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,437 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,662 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,052 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,552 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,366 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,988 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,860 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,724 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,982 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,084 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,316 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,775 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,900 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,938 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,664 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,750 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,656 |
| Largest Countries By Category | 0 | - | 4.97 | 159,220 |
| Countries by Countries | 0 | - | 4.97 | 63,873 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,556 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,467 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,727 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,697 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,620 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,313 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,817,080 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,218 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,237 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,765 |
| Island Countries | 0 | - | 4.99 | 713,315 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,972 |
| Northernmost Countries | 0 | - | 4.99 | 364,942 |
| Countries of South America | 0 | - | 5.00 | 935,204 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,786 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,895,350 |
| "Land" Countries | 0 | - | 4.98 | 339,225 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,399,101 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,721 |
| Countries with Megacities | 0 | - | 4.99 | 268,302 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,350 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,447 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,698 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,558 |
| Countries by Official Language | 0 | - | 4.95 | 196,364 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,138 |
| Countries in their Native Language | 0 | - | 4.99 | 200,077 |
| Independence from Whom | 0 | - | 4.99 | 213,596 |
| Subdivisions by Country | 0 | - | 4.87 | 50,689 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,791 |
| Megadiverse Countries | 0 | - | 4.96 | 149,909 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,242 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,609 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,874 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,277 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,581 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,971 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,398 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,665 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,227 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,304 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,939 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,534 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,544 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,261 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,686 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,023 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,946 |
| World Map Quiz | 0 | - | 4.81 | 66,009 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,290 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,883 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,823 |
| Countries by Founding Story | 0 | - | 4.95 | 77,963 |
| Countries by Road Signs | 0 | - | 4.98 | 54,510 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,677 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,315 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,795 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,118 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,637 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,757 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,918 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,794 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,037 |
| Widest Countries East to West | 0 | - | 4.92 | 130,924 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,641 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,492 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,595 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,215 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,514 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,676 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,556 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,935 |
| Countries With the Tallest People | 0 | - | 4.93 | 95,282 |
| Countries with Double Letters | 0 | - | 4.96 | 97,830 |
| Countries that End in N | 0 | - | 4.95 | 172,829 |
| Countries with Five Letters | 0 | - | 4.96 | 284,905 |
| Countries with Six Letters | 0 | - | 4.94 | 215,169 |
| Countries with W | 0 | - | 4.96 | 161,461 |
| Countries with Z | 0 | - | 4.98 | 293,237 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,829 |
| Countries That End in U | 0 | - | 4.95 | 121,477 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,587 |
| Countries that End in O | 0 | - | 4.92 | 160,444 |
| Countries that End in R | 0 | - | 4.87 | 119,328 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,094 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,308 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,891 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,322 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 144,005 |
| Countries That End in Y | 0 | - | 4.91 | 186,220 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,551 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,511 |
| Countries that End in I | 0 | - | 4.94 | 135,468 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,490 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,197 |
| Countries That End in NIA | 0 | - | 4.92 | 110,215 |
| Countries That End in BIA | 0 | - | 4.93 | 149,808 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,020 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,967 |
| Countries That End in RIA | 0 | - | 4.93 | 127,208 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,612 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,119 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,495 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 126,958 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,515 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,973 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,537 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,627 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,146 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,790 |
| Countries with the Word "And" | 0 | - | 4.99 | 118,007 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,707 |
| Countries that End in L | 0 | - | 4.94 | 157,309 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,897 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,398 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,930 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,199 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,586 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,792 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,412 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,584 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,502 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,299 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,378 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,326 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,990 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,903 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,406 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,457,174 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,288 |
| One Border Countries | 0 | - | 4.98 | 472,956 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,797 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,856,361 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,663,510 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,531 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,663 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,916 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 113,287 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,450 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,788 |
| Countries by National Anthem | 0 | - | 4.92 | 71,451 |
| NATO Countries | 0 | - | 4.98 | 284,365 |
| EU Countries Quiz | 0 | - | 4.99 | 279,298 |
| Recently Independent Countries | 0 | - | 4.98 | 160,605 |
| French-Speaking Countries | 0 | - | 4.85 | 272,038 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,290 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,432 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 292,243 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 278,445 |
| German-Speaking Countries | 0 | - | 4.91 | 146,124 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,828 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,949 |
