| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,649,217 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,818,841 |
| Landlocked Countries | 0 | - | 4.99 | 424,927 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 586,144 |
| Countries and Capitals of the World With a Map | 0 | - | 5.00 | 68,829 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,799,175 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,837 |
| Himalayan Countries | 0 | - | 4.93 | 139,926 |
| Andean Countries | 0 | - | 4.94 | 85,264 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,428 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,771 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,997 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,298 |
| Danube Countries | 0 | - | 4.97 | 72,303 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,466 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,748 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,940 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,437 |
| European Landlocked Countries | 0 | - | 4.99 | 147,505 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,163 |
| Countries with the Most Species | 0 | - | 4.99 | 103,512 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,295 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,727 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,839 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,777 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,509 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,942 |
| Countries in the Alps | 0 | - | 4.87 | 118,659 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,436 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,697 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,907 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,941 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,862 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,178 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,298 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,798 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,363 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,100 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,810 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,686 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,482 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,716 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,814 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,625 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,548 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,652 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,550 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,379 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,947 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,461 |
| Largest Countries By Category | 0 | - | 4.97 | 158,734 |
| Countries by Countries | 0 | - | 4.96 | 63,554 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,164 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,377 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,653 |
| All Countries by Population With a Map | 0 | - | 4.98 | 110,716 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,320 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,027 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,814 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,449 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,251 |
| Island Countries | 0 | - | 4.99 | 712,251 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,817 |
| Northernmost Countries | 0 | - | 4.99 | 363,629 |
| Countries of South America | 0 | - | 5.00 | 931,561 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,947 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,698 |
| "Land" Countries | 0 | - | 4.98 | 338,208 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,850 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,126 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,945 |
| Countries with Megacities | 0 | - | 4.99 | 266,698 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,644 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,998 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,953 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,118 |
| Countries by Official Language | 0 | - | 4.95 | 195,858 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,448 |
| Countries in their Native Language | 0 | - | 4.99 | 199,626 |
| Independence from Whom | 0 | - | 4.99 | 212,888 |
| Subdivisions by Country | 0 | - | 4.87 | 50,584 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,313 |
| Megadiverse Countries | 0 | - | 4.96 | 135,221 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,837 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,500 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,408 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,202 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,504 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,796 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,010 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,527 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,789 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,236 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,345 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,335 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,403 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,116 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,546 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,658 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,977 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,146 |
| World Map Quiz | 0 | - | 4.81 | 65,565 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 139,741 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,858 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,631 |
| Countries of the World With a Disappearing Map | 0 | - | 5.00 | 113,793 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,498 |
| Countries by Sports in 60 Seconds | 0 | - | 4.92 | 147,656 |
| Countries by Founding Story | 0 | - | 4.95 | 77,728 |
| Countries by Road Signs | 0 | - | 4.98 | 54,292 |
| Countries That Do Not Border | 0 | - | 4.99 | 60,772 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,092 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,989 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,479 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,367 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,333 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,456 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,658 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,645 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,451 |
| Widest Countries East to West | 0 | - | 4.92 | 130,375 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,576 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,168 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,487 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,006 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,907 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,403 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,475 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,878 |
| Countries With the Tallest People | 0 | - | 4.93 | 95,160 |
| Countries with Double Letters | 0 | - | 4.96 | 96,918 |
| Countries that End in N | 0 | - | 4.94 | 171,791 |
| Countries with Five Letters | 0 | - | 4.96 | 283,553 |
| Countries with Six Letters | 0 | - | 4.94 | 214,279 |
| Countries with W | 0 | - | 4.96 | 160,833 |
| Countries with Z | 0 | - | 4.98 | 292,264 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,179 |
| Countries That End in U | 0 | - | 4.95 | 121,118 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,989 |
| Countries that End in O | 0 | - | 4.92 | 159,836 |
| Countries that End in R | 0 | - | 4.87 | 119,134 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,893 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,707 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,063 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,761 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,692 |
| Countries That End in Y | 0 | - | 4.91 | 186,051 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,360 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,190 |
| Countries that End in I | 0 | - | 4.94 | 135,271 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,524 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,011 |
| Countries That End in NIA | 0 | - | 4.92 | 109,999 |
| Countries That End in BIA | 0 | - | 4.93 | 149,520 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,445 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,706 |
| Countries That End in RIA | 0 | - | 4.93 | 127,018 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,315 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,414 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,081 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,524 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,096 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,768 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,272 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,521 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,830 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,609 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,639 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,330 |
| Countries with the Highest Scrabble Score | 0 | - | 4.97 | 63,923 |
| Countries that End in L | 0 | - | 4.94 | 157,072 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,708 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,331 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,290 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,845 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,384 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,311 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,066 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,387 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,184 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,886 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,151 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,211 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,805 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,194 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 387,160 |
| Smallest Countries with at Least Two Borders | 0 | - | 4.97 | 43,130 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,959 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,187 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,845,959 |
| One Border Countries | 0 | - | 4.98 | 471,597 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,666 |
| Countries with the Highest Minimum Elevation | 0 | - | 4.86 | 16,256 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,735 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,262 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,885 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,577 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,847 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,133 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,526 |
