| Landlocked Countries | 0 | - | 4.99 | 417,375 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,221,443 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,266 |
| Himalayan Countries | 0 | - | 4.95 | 136,794 |
| Andean Countries | 0 | - | 4.95 | 83,626 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,881 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,186 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,553 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,145 |
| Danube Countries | 0 | - | 4.97 | 71,497 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,327 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,913 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,327 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,343 |
| European Landlocked Countries | 0 | - | 4.99 | 146,208 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,898 |
| Countries with the Most Species | 0 | - | 4.99 | 102,462 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,026 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,359 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,540 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,209 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,862 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,245 |
| Countries in the Alps | 0 | - | 4.86 | 117,450 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,976 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,066 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,312 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,816 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,915 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,329 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,087 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,054 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,869 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,405 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,409 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,247 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,796 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,063 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,075 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,866 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,948 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,478 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,314 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,462 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,796 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,881 |
| Largest Countries By Category | 0 | - | 4.97 | 157,377 |
| Countries by Countries | 0 | - | 4.96 | 62,681 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,967 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,112 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,430 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,003 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,475 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,159 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,746,295 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,662 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,154 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,298 |
| Island Countries | 0 | - | 4.99 | 709,148 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,312 |
| Northernmost Countries | 0 | - | 4.99 | 359,778 |
| Countries of South America | 0 | - | 5.00 | 920,720 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,383 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,861,292 |
| "Land" Countries | 0 | - | 4.98 | 335,266 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,307 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,530 |
| Countries with Megacities | 0 | - | 4.99 | 249,486 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,376 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,689 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,710 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,657 |
| Countries by Official Language | 0 | - | 4.95 | 194,288 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,115 |
| Countries in their Native Language | 0 | - | 4.99 | 197,883 |
| Independence from Whom | 0 | - | 4.99 | 210,998 |
| Subdivisions by Country | 0 | - | 4.86 | 50,231 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,468 |
| Megadiverse Countries | 0 | - | 4.96 | 134,625 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,039 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,119 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,670 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,967 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,527 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,282 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,724 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,637 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,413 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,824 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,500 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,628 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,725 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,691 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,904 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,252 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,774 |
| World Map Quiz | 0 | - | 4.81 | 64,244 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,776 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,798 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,600 |
| Countries by Founding Story | 0 | - | 4.95 | 76,943 |
| Countries by Road Signs | 0 | - | 4.98 | 53,499 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,206 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,755 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,485 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,926 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,365 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,535 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,698 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,190 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,167 |
| Widest Countries East to West | 0 | - | 4.92 | 129,235 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,345 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,757 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,949 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,126 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,059 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,427 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,164 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,693 |
| Countries with Double Letters | 0 | - | 4.97 | 94,673 |
| Countries that End in N | 0 | - | 4.95 | 168,899 |
| Countries with Five Letters | 0 | - | 4.96 | 274,674 |
| Countries with Six Letters | 0 | - | 4.94 | 211,951 |
| Countries with W | 0 | - | 4.97 | 159,208 |
| Countries with Z | 0 | - | 4.98 | 289,333 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,416 |
| Countries That End in U | 0 | - | 4.95 | 120,237 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,430 |
| Countries that End in O | 0 | - | 4.92 | 159,053 |
| Countries that End in R | 0 | - | 4.87 | 118,625 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,399 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,007 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,903 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,930 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,510 |
| Countries That End in Y | 0 | - | 4.90 | 185,538 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,003 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,219 |
| Countries that End in I | 0 | - | 4.94 | 134,742 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,828 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,473 |
| Countries That End in NIA | 0 | - | 4.92 | 109,386 |
| Countries That End in BIA | 0 | - | 4.93 | 148,670 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,533 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,886 |
| Countries That End in RIA | 0 | - | 4.93 | 126,411 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,464 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,294 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,990 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,312 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,938 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,217 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,539 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,066 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,948 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,103 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,645 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,338 |
| Countries that End in L | 0 | - | 4.94 | 156,396 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,319 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,120 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,758 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,618 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,677 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,465 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,910 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,445 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,906 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,365 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,109 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,893 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,316 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,546 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,559 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,100 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,156 |
| One Border Countries | 0 | - | 4.98 | 466,860 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,180 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,816,608 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,607,732 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,371 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,071 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,451 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,146 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,193 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,738 |
| Countries by National Anthem | 0 | - | 4.92 | 71,150 |
| NATO Countries | 0 | - | 4.98 | 278,542 |
| EU Countries Quiz | 0 | - | 4.99 | 272,117 |
| Recently Independent Countries | 0 | - | 4.98 | 158,479 |
| French-Speaking Countries | 0 | - | 4.85 | 269,948 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,664 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,164 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,773 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,923 |
| German-Speaking Countries | 0 | - | 4.91 | 144,710 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,102 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,703 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,618 |
