| Landlocked Countries | 0 | - | 4.99 | 416,377 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,141,093 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,801 |
| Himalayan Countries | 0 | - | 4.95 | 136,387 |
| Andean Countries | 0 | - | 4.95 | 83,424 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,689 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,910 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,375 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,977 |
| Danube Countries | 0 | - | 4.97 | 71,371 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,164 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,827 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,099 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,049 |
| European Landlocked Countries | 0 | - | 4.99 | 146,099 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,713 |
| Countries with the Most Species | 0 | - | 4.99 | 100,662 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,856 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,315 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,491 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,134 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,790 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,163 |
| Countries in the Alps | 0 | - | 4.86 | 117,296 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,875 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,826 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,234 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,713 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,783 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,224 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,953 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,974 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,781 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,311 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,341 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,193 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,699 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,972 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,982 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,655 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,872 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,406 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,204 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,836 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,494 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,798 |
| Largest Countries By Category | 0 | - | 4.97 | 157,216 |
| Countries by Countries | 0 | - | 4.96 | 62,566 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,841 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,070 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,406 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,626 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,368 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,059 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,738,517 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,598 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,705 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,562 |
| Island Countries | 0 | - | 4.99 | 708,721 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,980 |
| Northernmost Countries | 0 | - | 4.99 | 359,229 |
| Countries of South America | 0 | - | 5.00 | 919,300 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,170 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,758 |
| "Land" Countries | 0 | - | 4.98 | 334,451 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,749 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,196 |
| Countries with Megacities | 0 | - | 4.99 | 248,775 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,050 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,510 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,422 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,452 |
| Countries by Official Language | 0 | - | 4.95 | 193,923 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,423 |
| Countries in their Native Language | 0 | - | 4.99 | 197,553 |
| Independence from Whom | 0 | - | 4.99 | 210,595 |
| Subdivisions by Country | 0 | - | 4.86 | 50,185 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,273 |
| Megadiverse Countries | 0 | - | 4.96 | 134,519 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,754 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,070 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,615 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,942 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,415 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,196 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,526 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,523 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,355 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,801 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,122 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,570 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,669 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,631 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,836 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,185 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,458 |
| World Map Quiz | 0 | - | 4.81 | 64,017 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,212 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,667 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,474 |
| Countries by Founding Story | 0 | - | 4.95 | 76,842 |
| Countries by Road Signs | 0 | - | 4.98 | 53,379 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,012 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,634 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,366 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,622 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,229 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,428 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,601 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,131 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,618 |
| Widest Countries East to West | 0 | - | 4.92 | 129,119 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,320 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,616 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,901 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,935 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,954 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,332 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,043 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,663 |
| Countries with Double Letters | 0 | - | 4.96 | 93,958 |
| Countries that End in N | 0 | - | 4.94 | 162,270 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,388 |
| Countries with Six Letters | 0 | - | 4.93 | 210,978 |
| Countries with W | 0 | - | 4.97 | 158,658 |
| Countries with Z | 0 | - | 4.98 | 288,579 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,942 |
| Countries That End in U | 0 | - | 4.95 | 119,805 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,077 |
| Countries that End in O | 0 | - | 4.92 | 158,783 |
| Countries that End in R | 0 | - | 4.87 | 118,462 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,994 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,647 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,687 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,765 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,337 |
| Countries That End in Y | 0 | - | 4.90 | 185,370 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,780 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,037 |
| Countries that End in I | 0 | - | 4.94 | 134,632 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,647 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,382 |
| Countries That End in NIA | 0 | - | 4.92 | 109,263 |
| Countries That End in BIA | 0 | - | 4.93 | 148,503 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,383 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,737 |
| Countries That End in RIA | 0 | - | 4.93 | 126,305 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,290 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,003 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,815 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,164 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,731 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,114 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,398 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,912 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,798 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,971 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,473 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,153 |
| Countries that End in L | 0 | - | 4.94 | 156,245 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,743 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,048 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,700 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,542 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,600 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,256 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,775 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,252 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,788 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,206 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,025 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,858 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,282 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,503 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,491 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,500 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,734 |
| One Border Countries | 0 | - | 4.98 | 466,267 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,037 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,812,234 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,602,726 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,252 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,839 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,293 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,060 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,066 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,609 |
| Countries by National Anthem | 0 | - | 4.92 | 71,106 |
| NATO Countries | 0 | - | 4.98 | 277,896 |
| EU Countries Quiz | 0 | - | 4.99 | 271,453 |
| Recently Independent Countries | 0 | - | 4.98 | 158,343 |
| French-Speaking Countries | 0 | - | 4.85 | 269,686 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,481 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,838 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,217 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,191 |
| German-Speaking Countries | 0 | - | 4.91 | 142,807 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,993 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,615 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,280 |
