| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,588,085 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 711,525 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,397 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 378,568 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,920,134 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,088,039 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,778 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,172 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,120 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,238 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 134,821 |
| Countries with Four Letters | 0 | - | 4.99 | 418,540 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 67,844 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,197 |
| Landlocked Countries | 0 | - | 4.99 | 413,632 |
| Countries of the World - One Minute Sprint | 0 | - | 4.35 | 956,256 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,325 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,437 |
| Country Chain | 0 | - | 4.96 | 215,729 |
| Countries by Emojis | 0 | - | 4.99 | 236,187 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,109 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,019 |
| Islands by Country #1 | 0 | - | 4.87 | 174,487 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,924 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,287 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,335 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,716,881 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 213,811 |
| Name a Valid Country #3 | 0 | - | 4.99 | 259,818 |
| Name a Valid Country #1 | 0 | - | 4.99 | 283,521 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,408 |
| Name a Valid Country #4 | 0 | - | 4.97 | 251,581 |
| Name a Valid Country #5 | 0 | - | 4.99 | 189,805 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,407 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,591 |
| Himalayan Countries | 0 | - | 4.95 | 135,352 |
| Andean Countries | 0 | - | 4.94 | 82,827 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,213 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,212 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,900 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,608 |
| Danube Countries | 0 | - | 4.97 | 71,080 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,765 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,539 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,481 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,400 |
| European Landlocked Countries | 0 | - | 4.99 | 145,752 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,213 |
| Countries with the Most Species | 0 | - | 4.99 | 95,241 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,343 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,197 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,370 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,957 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,576 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,953 |
| Countries in the Alps | 0 | - | 4.86 | 116,821 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,563 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,255 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,011 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,422 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,159 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,003 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,576 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,746 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,293 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,052 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,194 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,042 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,453 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,747 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,753 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,063 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,644 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,254 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,770 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,300 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,673 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,600 |
| Largest Countries By Category | 0 | - | 4.97 | 156,757 |
| Countries by Countries | 0 | - | 4.96 | 62,255 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,384 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,963 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,332 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,765 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,949 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,115 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,847 |
| Island Countries | 0 | - | 4.99 | 707,625 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,446 |
| Northernmost Countries | 0 | - | 4.99 | 357,727 |
| Countries of South America | 0 | - | 5.00 | 914,750 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,441 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,848,334 |
| "Land" Countries | 0 | - | 4.98 | 333,656 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,447 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,451 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,343 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,340 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,854 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,330 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,679 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,634 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,578 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 222,836 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,332 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,441 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 137,069 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 77,221 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,604 |
| Random Countries by Borders | 0 | - | 4.99 | 81,677 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,223 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 236,422 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,214 |
| Countries with Megacities | 0 | - | 4.99 | 246,904 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,115 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,967 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,528 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,854 |
| Random World Capitals on a Map | 0 | - | 4.93 | 133,225 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 88,663 |
| Countries by Official Language | 0 | - | 4.95 | 192,769 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,130 |
| Countries in their Native Language | 0 | - | 4.99 | 196,637 |
| Independence from Whom | 0 | - | 4.99 | 209,690 |
| Subdivisions by Country | 0 | - | 4.86 | 50,064 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,750 |
| Megadiverse Countries | 0 | - | 4.97 | 133,903 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,801 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,918 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,427 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,860 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,657 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,998 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,014 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,142 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,213 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,746 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,570 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,417 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,493 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,503 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,675 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,025 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 100,801 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,586 |
| World Map Quiz | 0 | - | 4.81 | 63,494 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,674 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,332 |
| Countries by Founding Story | 0 | - | 4.95 | 76,540 |
| Countries by Road Signs | 0 | - | 4.98 | 53,099 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,348 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,988 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,952 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,759 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,853 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,061 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,278 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,946 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,336 |
| Widest Countries East to West | 0 | - | 4.92 | 128,603 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,218 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,210 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,563 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,686 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,629 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,040 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,051 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,582 |
| Countries with Double Letters | 0 | - | 4.97 | 93,391 |
| Countries that End in N | 0 | - | 4.94 | 156,875 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,687 |
| Countries with Six Letters | 0 | - | 4.93 | 210,363 |
| Countries with W | 0 | - | 4.97 | 158,226 |
| Countries with Z | 0 | - | 4.98 | 287,876 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,550 |
| Countries That End in U | 0 | - | 4.95 | 119,517 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,550 |
| Countries that End in O | 0 | - | 4.92 | 158,553 |
| Countries that End in R | 0 | - | 4.87 | 118,274 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,857 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,021 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,328 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,494 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,018 |
| Countries That End in Y | 0 | - | 4.90 | 185,204 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,370 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,690 |
| Countries that End in I | 0 | - | 4.94 | 134,411 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,197 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,194 |
| Countries That End in NIA | 0 | - | 4.92 | 109,010 |
| Countries That End in BIA | 0 | - | 4.92 | 147,718 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,060 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,482 |
| Countries That End in RIA | 0 | - | 4.93 | 126,082 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,008 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,191 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,520 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,888 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,355 |
