| Landlocked Countries | 0 | - | 4.99 | 422,329 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,610,665 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,699 |
| Himalayan Countries | 0 | - | 4.95 | 138,900 |
| Andean Countries | 0 | - | 4.93 | 84,714 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,915 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,976 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,536 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,873 |
| Danube Countries | 0 | - | 4.97 | 72,059 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,077 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,468 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,379 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,869 |
| European Landlocked Countries | 0 | - | 4.99 | 147,189 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,717 |
| Countries with the Most Species | 0 | - | 4.99 | 103,271 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,836 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,613 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,735 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,574 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,261 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,709 |
| Countries in the Alps | 0 | - | 4.87 | 118,266 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,347 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,099 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,692 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,634 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,557 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,979 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,717 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,540 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,202 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,891 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,674 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,548 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,258 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,509 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,570 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,990 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,342 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,220 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,137 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,115 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,229 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,262 |
| Largest Countries By Category | 0 | - | 4.97 | 158,279 |
| Countries by Countries | 0 | - | 4.96 | 63,272 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,742 |
| 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 | 88,709 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,781,263 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,841 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,613 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,564 |
| Island Countries | 0 | - | 4.99 | 711,169 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,311 |
| Northernmost Countries | 0 | - | 4.99 | 362,124 |
| Countries of South America | 0 | - | 5.00 | 927,819 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,604 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,434 |
| "Land" Countries | 0 | - | 4.98 | 337,436 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,540 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,986 |
| Countries with Megacities | 0 | - | 4.99 | 264,768 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,824 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,517 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,081 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,595 |
| Countries by Official Language | 0 | - | 4.95 | 195,317 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,477 |
| Countries in their Native Language | 0 | - | 4.99 | 199,110 |
| Independence from Whom | 0 | - | 4.99 | 212,180 |
| Subdivisions by Country | 0 | - | 4.86 | 50,440 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,793 |
| Megadiverse Countries | 0 | - | 4.96 | 135,047 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,161 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,378 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,253 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,120 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,179 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,615 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,519 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,053 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,678 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,160 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,740 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,909 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,226 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,986 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,373 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,513 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,286 |
| World Map Quiz | 0 | - | 4.81 | 65,143 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,463 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,385 |
| Countries by Founding Story | 0 | - | 4.95 | 77,404 |
| Countries by Road Signs | 0 | - | 4.98 | 54,047 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,159 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,318 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,030 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,301 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,929 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,042 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,326 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,465 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,599 |
| 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 | 186,424 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,133 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,791 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,625 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,905 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,384 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,808 |
| Countries with Double Letters | 0 | - | 4.96 | 96,299 |
| Countries that End in N | 0 | - | 4.95 | 171,191 |
| Countries with Five Letters | 0 | - | 4.96 | 282,616 |
| Countries with Six Letters | 0 | - | 4.94 | 213,633 |
| Countries with W | 0 | - | 4.97 | 160,378 |
| Countries with Z | 0 | - | 4.98 | 291,539 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,752 |
| Countries That End in U | 0 | - | 4.95 | 120,875 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,511 |
| Countries that End in O | 0 | - | 4.92 | 159,529 |
| Countries that End in R | 0 | - | 4.87 | 118,978 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,746 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,161 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,726 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,497 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,417 |
| Countries That End in Y | 0 | - | 4.91 | 185,890 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,963 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,891 |
| Countries that End in I | 0 | - | 4.94 | 135,112 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,146 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,834 |
| Countries That End in NIA | 0 | - | 4.92 | 109,804 |
| Countries That End in BIA | 0 | - | 4.93 | 149,234 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,143 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,447 |
| Countries That End in RIA | 0 | - | 4.93 | 126,822 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,039 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,698 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,743 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,167 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,724 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,589 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,052 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,451 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,544 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,439 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,321 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,010 |
| Countries that End in L | 0 | - | 4.94 | 156,863 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,907 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,273 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,042 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,972 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,018 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,806 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,690 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,128 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,812 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,503 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,891 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,116 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,714 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,891 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,736 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,101 |
| One Border Countries | 0 | - | 4.98 | 470,054 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,836,075 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,634,339 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,975 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,271 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,202 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,597 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,776 |
| 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 | 281,675 |
| EU Countries Quiz | 0 | - | 4.99 | 275,705 |
| Recently Independent Countries | 0 | - | 4.98 | 159,508 |
| French-Speaking Countries | 0 | - | 4.85 | 270,937 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,909 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,637 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,465 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,649 |
| German-Speaking Countries | 0 | - | 4.91 | 145,771 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,990 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,311 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,491 |
| Top Five Countries by Religion | 0 | - | 4.93 | 172,306 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,017 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,324 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 112,612 |
| Olympic Host Countries | 0 | - | 4.98 | 201,158 |
