| Landlocked Countries | 0 | - | 4.99 | 416,206 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,128,290 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,712 |
| Himalayan Countries | 0 | - | 4.95 | 136,317 |
| Andean Countries | 0 | - | 4.95 | 83,383 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,643 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,871 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,337 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,946 |
| Danube Countries | 0 | - | 4.97 | 71,350 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,139 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,808 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,067 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,011 |
| European Landlocked Countries | 0 | - | 4.99 | 146,073 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,687 |
| Countries with the Most Species | 0 | - | 4.99 | 99,460 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,837 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,310 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,484 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,125 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,777 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,146 |
| Countries in the Alps | 0 | - | 4.86 | 117,276 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,861 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,790 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,222 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,684 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,709 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,216 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,932 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,965 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,762 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,295 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,336 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,187 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,684 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,956 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,966 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,626 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,864 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,398 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,148 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,741 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,458 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,788 |
| Largest Countries By Category | 0 | - | 4.97 | 157,197 |
| Countries by Countries | 0 | - | 4.96 | 62,553 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,814 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,066 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,400 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,041 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,737,507 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,485 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,627 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,431 |
| Island Countries | 0 | - | 4.99 | 708,661 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,816 |
| Northernmost Countries | 0 | - | 4.99 | 359,138 |
| Countries of South America | 0 | - | 5.00 | 919,062 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,875 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,205 |
| "Land" Countries | 0 | - | 4.98 | 334,312 |
| Countries With the Most Expats | 0 | - | 4.69 | 49,415 |
| Countries with the Most Immigrants per Capita | 0 | - | 4.53 | 62,054 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,358 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,155 |
| Countries with Megacities | 0 | - | 4.99 | 248,693 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,021 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,478 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,391 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,427 |
| Countries by Official Language | 0 | - | 4.95 | 193,871 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,344 |
| Countries in their Native Language | 0 | - | 4.99 | 197,510 |
| Independence from Whom | 0 | - | 4.99 | 210,432 |
| Subdivisions by Country | 0 | - | 4.86 | 50,176 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,248 |
| Megadiverse Countries | 0 | - | 4.96 | 134,509 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,707 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,060 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,610 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,939 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,356 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,183 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,498 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,514 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,347 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,797 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,101 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,560 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,659 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,628 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,831 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,181 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,403 |
| World Map Quiz | 0 | - | 4.81 | 63,983 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,137 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,659 |
| Countries by Founding Story | 0 | - | 4.95 | 76,825 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,978 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,617 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,340 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,585 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,220 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,408 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,589 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,125 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,607 |
| Widest Countries East to West | 0 | - | 4.92 | 129,103 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,317 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,594 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,870 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,922 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,940 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,318 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,010 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,659 |
| Countries with Double Letters | 0 | - | 4.96 | 93,839 |
| Countries that End in N | 0 | - | 4.94 | 157,276 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,240 |
| Countries with Six Letters | 0 | - | 4.93 | 210,864 |
| Countries with W | 0 | - | 4.97 | 158,530 |
| Countries with Z | 0 | - | 4.98 | 288,426 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,869 |
| Countries That End in U | 0 | - | 4.95 | 119,670 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,033 |
| Countries that End in O | 0 | - | 4.92 | 158,709 |
| Countries that End in R | 0 | - | 4.87 | 118,421 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,975 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,597 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,651 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,735 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,304 |
| Countries That End in Y | 0 | - | 4.90 | 185,331 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,752 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,011 |
| Countries that End in I | 0 | - | 4.94 | 134,604 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,612 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,369 |
| Countries That End in NIA | 0 | - | 4.92 | 109,237 |
| Countries That End in BIA | 0 | - | 4.93 | 148,472 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,359 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,713 |
| Countries That End in RIA | 0 | - | 4.93 | 126,276 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,266 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,963 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,791 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,145 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,696 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,091 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,371 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,888 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,782 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,952 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,455 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,113 |
| Countries that End in L | 0 | - | 4.94 | 156,217 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,651 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,040 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,691 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,526 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,589 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,222 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,751 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,204 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,776 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,187 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,010 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,857 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,278 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,497 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,484 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,280 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,674 |
| One Border Countries | 0 | - | 4.98 | 466,200 |
| Countries by Net Migration | 0 | - | 4.52 | 83,555 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,811,638 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,601,971 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,244 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,803 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,268 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,052 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,050 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,599 |
| Countries by National Anthem | 0 | - | 4.92 | 71,102 |
| NATO Countries | 0 | - | 4.98 | 277,795 |
| EU Countries Quiz | 0 | - | 4.99 | 271,375 |
| Recently Independent Countries | 0 | - | 4.98 | 158,320 |
| French-Speaking Countries | 0 | - | 4.85 | 269,644 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,475 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,801 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,150 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,109 |
| German-Speaking Countries | 0 | - | 4.91 | 141,868 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,985 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,605 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,218 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,870 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,028 |
