| Landlocked Countries | 0 | - | 4.99 | 412,928 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,856,285 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,263 |
| Himalayan Countries | 0 | - | 4.95 | 135,071 |
| Andean Countries | 0 | - | 4.94 | 82,675 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,092 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,007 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,777 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,479 |
| Danube Countries | 0 | - | 4.97 | 71,008 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,644 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,462 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,300 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,221 |
| European Landlocked Countries | 0 | - | 4.99 | 145,673 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,061 |
| Countries with the Most Species | 0 | - | 4.99 | 95,191 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,210 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,178 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,334 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,913 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,516 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,873 |
| Countries in the Alps | 0 | - | 4.87 | 116,695 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,481 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,092 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,948 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,330 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,072 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,940 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,479 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,689 |
| Largest Country by Body of Water | 0 | - | 4.95 | 55,969 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,975 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,166 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,000 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,369 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,678 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,679 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,881 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,573 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,206 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,681 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,865 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,394 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,546 |
| Largest Countries By Category | 0 | - | 4.97 | 156,631 |
| Countries by Countries | 0 | - | 4.96 | 62,173 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,232 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,935 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,306 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,663 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,710,318 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,092 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,849 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,022 |
| Island Countries | 0 | - | 4.99 | 707,266 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,433 |
| Northernmost Countries | 0 | - | 4.99 | 357,275 |
| Countries of South America | 0 | - | 5.00 | 913,521 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,733 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,377 |
| "Land" Countries | 0 | - | 4.98 | 333,435 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,203 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,880 |
| Countries with Megacities | 0 | - | 4.99 | 246,226 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,797 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,743 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,265 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,678 |
| Countries by Official Language | 0 | - | 4.95 | 192,600 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,888 |
| Countries in their Native Language | 0 | - | 4.99 | 196,483 |
| Independence from Whom | 0 | - | 4.99 | 209,487 |
| Subdivisions by Country | 0 | - | 4.86 | 50,034 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,589 |
| Megadiverse Countries | 0 | - | 4.97 | 133,834 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,657 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,878 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,374 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,836 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,552 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,942 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,599 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,068 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,183 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,717 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,398 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,366 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,434 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,450 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,610 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,982 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,368 |
| World Map Quiz | 0 | - | 4.81 | 63,368 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,246 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,226 |
| Countries by Founding Story | 0 | - | 4.95 | 76,451 |
| Countries by Road Signs | 0 | - | 4.98 | 52,986 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,167 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,884 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,860 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,522 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,776 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,972 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,176 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,882 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,263 |
| Widest Countries East to West | 0 | - | 4.92 | 128,528 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,191 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,087 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,521 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,627 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,525 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,951 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,032 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,552 |
| Countries with Double Letters | 0 | - | 4.97 | 93,227 |
| Countries that End in N | 0 | - | 4.94 | 156,293 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,502 |
| Countries with Six Letters | 0 | - | 4.93 | 210,205 |
| Countries with W | 0 | - | 4.97 | 158,104 |
| Countries with Z | 0 | - | 4.98 | 287,477 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,435 |
| Countries That End in U | 0 | - | 4.95 | 119,449 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,357 |
| Countries that End in O | 0 | - | 4.92 | 158,481 |
| Countries that End in R | 0 | - | 4.86 | 118,211 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,813 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,873 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,189 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,385 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,572 |
| Countries That End in Y | 0 | - | 4.90 | 185,156 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,180 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,560 |
| Countries that End in I | 0 | - | 4.94 | 134,318 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,028 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,148 |
| Countries That End in NIA | 0 | - | 4.92 | 108,935 |
| Countries That End in BIA | 0 | - | 4.92 | 147,615 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 165,980 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,412 |
| Countries That End in RIA | 0 | - | 4.93 | 126,016 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,924 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 224,991 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,438 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,816 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,256 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,871 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,036 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,556 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,395 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,770 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,018 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,691 |
| Countries that End in L | 0 | - | 4.94 | 155,646 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,702 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,965 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,462 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,228 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,368 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,281 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 198,950 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,836 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,060 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,255 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,441 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,567 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,145 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,391 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,259 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,587 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,134 |
| One Border Countries | 0 | - | 4.98 | 463,627 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,797,669 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,583,849 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,731 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,710 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,757 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,407 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,493 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,158 |
| Countries by National Anthem | 0 | - | 4.92 | 70,999 |
| NATO Countries | 0 | - | 4.98 | 275,156 |
| EU Countries Quiz | 0 | - | 4.99 | 269,458 |
| Recently Independent Countries | 0 | - | 4.98 | 157,871 |
| French-Speaking Countries | 0 | - | 4.85 | 268,617 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,334 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,742 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,517 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,703 |
| German-Speaking Countries | 0 | - | 4.89 | 123,475 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,543 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,266 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 162,853 |
| Top Five Countries by Religion | 0 | - | 4.93 | 168,787 |
| Solve the Secret Country #2 | 0 | - | 4.84 | 115,858 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 111,408 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 110,815 |
