| Countries of the World Quiz | 0 | - | 5.00 | 47,148,623 |
| Landlocked Countries | 0 | - | 4.99 | 416,477 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,739,289 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,846 |
| Himalayan Countries | 0 | - | 4.95 | 136,426 |
| Andean Countries | 0 | - | 4.95 | 83,443 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,713 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,941 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,391 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,993 |
| Danube Countries | 0 | - | 4.97 | 71,377 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,185 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,838 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,119 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,075 |
| European Landlocked Countries | 0 | - | 4.99 | 146,112 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,730 |
| Countries with the Most Species | 0 | - | 4.99 | 101,156 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,868 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,318 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,500 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,137 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,795 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,169 |
| Countries in the Alps | 0 | - | 4.86 | 117,306 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,879 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,848 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,240 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,723 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,798 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,235 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,961 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,983 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,789 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,318 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,350 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,196 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,706 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,982 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,992 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,670 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,879 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,416 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,213 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,902 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,520 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,812 |
| Largest Countries By Category | 0 | - | 4.97 | 157,227 |
| Countries by Countries | 0 | - | 4.96 | 62,577 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,853 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,075 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,406 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,653 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,377 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,067 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,665 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,758 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,634 |
| Island Countries | 0 | - | 4.99 | 708,746 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,122 |
| Northernmost Countries | 0 | - | 4.99 | 359,279 |
| Countries of South America | 0 | - | 5.00 | 919,405 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,312 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,982 |
| "Land" Countries | 0 | - | 4.98 | 334,532 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,973 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,225 |
| Countries with Megacities | 0 | - | 4.99 | 248,837 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,076 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,519 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,443 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,471 |
| Countries by Official Language | 0 | - | 4.95 | 193,962 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,467 |
| Countries in their Native Language | 0 | - | 4.99 | 197,589 |
| Independence from Whom | 0 | - | 4.99 | 210,752 |
| Subdivisions by Country | 0 | - | 4.86 | 50,189 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,290 |
| Megadiverse Countries | 0 | - | 4.96 | 134,523 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,789 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,072 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,619 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,943 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,421 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,204 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,546 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,532 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,362 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,803 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,133 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,576 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,678 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,634 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,843 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,193 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,483 |
| World Map Quiz | 0 | - | 4.81 | 64,052 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,268 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,673 |
| Countries by Founding Story | 0 | - | 4.95 | 76,852 |
| Countries by Road Signs | 0 | - | 4.98 | 53,392 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,028 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,647 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,376 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,653 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,247 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,440 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,607 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,137 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,627 |
| Widest Countries East to West | 0 | - | 4.92 | 129,124 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,324 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,622 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,904 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,940 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,960 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,338 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,069 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,667 |
| Countries with Double Letters | 0 | - | 4.96 | 94,044 |
| Countries that End in N | 0 | - | 4.95 | 164,374 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,473 |
| Countries with Six Letters | 0 | - | 4.93 | 211,046 |
| Countries with W | 0 | - | 4.97 | 158,742 |
| Countries with Z | 0 | - | 4.98 | 288,654 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,977 |
| Countries That End in U | 0 | - | 4.95 | 119,865 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,107 |
| Countries that End in O | 0 | - | 4.92 | 158,821 |
| Countries that End in R | 0 | - | 4.87 | 118,481 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,036 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,681 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,705 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,787 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,349 |
| Countries That End in Y | 0 | - | 4.90 | 185,392 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,794 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,054 |
| Countries that End in I | 0 | - | 4.94 | 134,644 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,663 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,389 |
| Countries That End in NIA | 0 | - | 4.92 | 109,276 |
| Countries That End in BIA | 0 | - | 4.93 | 148,530 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,402 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,745 |
| Countries That End in RIA | 0 | - | 4.93 | 126,316 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,304 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,036 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,833 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,173 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,744 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,128 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,417 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,922 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,814 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,984 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,488 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,167 |
| Countries that End in L | 0 | - | 4.94 | 156,267 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,786 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,057 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,702 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,548 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,607 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,277 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,786 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,281 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,797 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,218 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,030 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,865 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,284 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,508 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,497 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,644 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,769 |
| One Border Countries | 0 | - | 4.98 | 466,315 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,812,667 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,603,198 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,058 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,259 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,861 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,300 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,065 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,071 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,617 |
| Countries by National Anthem | 0 | - | 4.92 | 71,109 |
| NATO Countries | 0 | - | 4.98 | 277,954 |
| EU Countries Quiz | 0 | - | 4.99 | 271,503 |
| Recently Independent Countries | 0 | - | 4.98 | 158,354 |
| French-Speaking Countries | 0 | - | 4.85 | 269,707 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,486 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,871 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,271 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,258 |
| German-Speaking Countries | 0 | - | 4.91 | 143,268 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,007 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,626 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,309 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,945 |
