| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,659,056 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 745,202 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,673 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,833 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,912 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,310 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,182 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,960,482 |
| Landlocked Countries | 0 | - | 4.99 | 427,151 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,127,874 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,037 |
| Countries with Four Letters | 0 | - | 4.99 | 426,387 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,811,623 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,871 |
| Himalayan Countries | 0 | - | 4.93 | 140,783 |
| Andean Countries | 0 | - | 4.94 | 85,775 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,899 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,464 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,451 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,676 |
| Danube Countries | 0 | - | 4.97 | 72,531 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,783 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,966 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,420 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,892 |
| European Landlocked Countries | 0 | - | 4.99 | 147,728 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,518 |
| Countries with the Most Species | 0 | - | 4.99 | 103,638 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,623 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,812 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,949 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,282 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,915 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,645 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,669 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,120 |
| Countries in the Alps | 0 | - | 4.87 | 118,952 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,960 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,104 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,050 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,158 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,114 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,379 |
| Country Chain | 0 | - | 4.96 | 218,640 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,577 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,982 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,506 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,306 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,949 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,824 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,664 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,914 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,014 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,124 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,722 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,371 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,828 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,247 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,465 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,606 |
| Largest Countries By Category | 0 | - | 4.97 | 159,071 |
| Countries by Emojis | 0 | - | 4.99 | 242,812 |
| Countries by Countries | 0 | - | 4.97 | 63,795 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,697 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,292 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,419 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,443 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,704 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,214 |
| Islands by Country #1 | 0 | - | 4.90 | 176,476 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,333 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,649 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,462 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,479 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 281,190 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,350 |
| Name a Valid Country #1 | 0 | - | 4.99 | 296,026 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,564 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,559 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,369 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,617 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,497 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,017 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,294 |
| Island Countries | 0 | - | 4.99 | 712,970 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,039 |
| Northernmost Countries | 0 | - | 4.99 | 364,548 |
| Countries of South America | 0 | - | 5.00 | 934,103 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,309 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,667 |
| "Land" Countries | 0 | - | 4.98 | 338,951 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,887 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,811 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,761 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,179 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 90,015 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,762 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,662 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,857 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,572 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,421 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,990 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,324 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,620 |
| Random Countries by Borders | 0 | - | 4.99 | 83,189 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,874 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,470 |
| Countries with Megacities | 0 | - | 4.99 | 267,781 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,118 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,323 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,451 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,422 |
| Countries by Official Language | 0 | - | 4.95 | 196,192 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,910 |
| Countries in their Native Language | 0 | - | 4.99 | 199,941 |
| Independence from Whom | 0 | - | 4.99 | 213,379 |
| Subdivisions by Country | 0 | - | 4.87 | 50,663 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,637 |
| Megadiverse Countries | 0 | - | 4.96 | 148,749 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,119 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,572 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,798 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,256 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,452 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,916 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,267 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,619 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,158 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,284 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,742 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,479 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,500 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,212 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,632 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,959 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,702 |
| World Map Quiz | 0 | - | 4.81 | 65,913 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,835 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,797 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,490 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,220 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,692 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,896 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,540 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,652 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,843 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,760 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,929 |
| Widest Countries East to West | 0 | - | 4.92 | 130,835 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,627 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,385 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,556 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,150 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,095 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,600 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,532 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,921 |
| Countries with Double Letters | 0 | - | 4.96 | 97,592 |
| Countries that End in N | 0 | - | 4.95 | 172,602 |
| Countries with Five Letters | 0 | - | 4.96 | 284,597 |
| Countries with Six Letters | 0 | - | 4.94 | 214,923 |
| Countries with W | 0 | - | 4.96 | 161,291 |
| Countries with Z | 0 | - | 4.98 | 292,964 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,651 |
| Countries That End in U | 0 | - | 4.95 | 121,376 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,402 |
| Countries that End in O | 0 | - | 4.92 | 160,361 |
| Countries that End in R | 0 | - | 4.87 | 119,273 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,055 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,130 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 185,187 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,169 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,695 |
| Countries That End in Y | 0 | - | 4.91 | 186,166 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,208 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,405 |
| Countries that End in I | 0 | - | 4.94 | 135,417 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,217 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,139 |
| Countries That End in NIA | 0 | - | 4.92 | 110,153 |
| Countries That End in BIA | 0 | - | 4.93 | 149,730 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,920 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,891 |
| Countries That End in RIA | 0 | - | 4.93 | 127,141 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,534 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,912 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,376 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,837 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,390 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,917 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,446 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,602 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,043 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,728 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,895 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,595 |
| Countries that End in L | 0 | - | 4.94 | 157,238 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,546 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,377 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,878 |
