| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,601,908 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,216 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,027 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,750 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,559 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,748 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,127,429 |
| Landlocked Countries | 0 | - | 4.99 | 416,195 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,093,618 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,825 |
| Countries with Four Letters | 0 | - | 4.99 | 420,058 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,737,433 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,707 |
| Himalayan Countries | 0 | - | 4.95 | 136,311 |
| Andean Countries | 0 | - | 4.95 | 83,378 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,642 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,866 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,336 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,945 |
| Danube Countries | 0 | - | 4.97 | 71,347 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,136 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,806 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,063 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,007 |
| European Landlocked Countries | 0 | - | 4.99 | 146,069 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,685 |
| Countries with the Most Species | 0 | - | 4.99 | 99,308 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,833 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,309 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,483 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,857 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,124 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,965 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,776 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,145 |
| Countries in the Alps | 0 | - | 4.86 | 117,274 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,859 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,788 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,220 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,684 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,697 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,216 |
| Country Chain | 0 | - | 4.96 | 216,347 |
| 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 | 53,335 |
| 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 | 78,955 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,963 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,624 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,861 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,398 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,146 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,735 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,455 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,788 |
| Largest Countries By Category | 0 | - | 4.97 | 157,196 |
| Countries by Emojis | 0 | - | 4.99 | 237,649 |
| Countries by Countries | 0 | - | 4.96 | 62,551 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,397 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 318,356 |
| 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 |
| Islands by Country #1 | 0 | - | 4.87 | 174,768 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,141 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,495 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,475 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,824 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,364 |
| Name a Valid Country #1 | 0 | - | 4.99 | 286,451 |
| Name a Valid Country #2 | 0 | - | 4.98 | 248,605 |
| Name a Valid Country #4 | 0 | - | 4.97 | 253,658 |
| Name a Valid Country #5 | 0 | - | 4.99 | 203,742 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,023 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 715,559 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,480 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,620 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,418 |
| Island Countries | 0 | - | 4.99 | 708,657 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,807 |
| Northernmost Countries | 0 | - | 4.99 | 359,135 |
| Countries of South America | 0 | - | 5.00 | 919,048 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,863 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,175 |
| "Land" Countries | 0 | - | 4.98 | 334,310 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,821 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,655 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,694 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,490 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,077 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,336 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,130 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,874 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,520 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,663 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,064 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,982 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,797 |
| Random Countries by Borders | 0 | - | 4.99 | 81,916 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,938 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,155 |
| Countries with Megacities | 0 | - | 4.99 | 248,691 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,017 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,476 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,390 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,426 |
| Countries by Official Language | 0 | - | 4.95 | 193,867 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,337 |
| Countries in their Native Language | 0 | - | 4.99 | 197,503 |
| Independence from Whom | 0 | - | 4.99 | 210,429 |
| Subdivisions by Country | 0 | - | 4.86 | 50,176 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,244 |
| Megadiverse Countries | 0 | - | 4.96 | 134,508 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,704 |
| 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 | 162,343 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,182 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,496 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,512 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,346 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,797 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,100 |
| 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 | 71,179 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,400 |
| World Map Quiz | 0 | - | 4.81 | 63,982 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,132 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,659 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,977 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,617 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,339 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,580 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,219 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,406 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,587 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,123 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,606 |
| Widest Countries East to West | 0 | - | 4.92 | 129,101 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,316 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,592 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,860 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,922 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,939 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,318 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,007 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,659 |
| Countries with Double Letters | 0 | - | 4.96 | 93,836 |
| Countries that End in N | 0 | - | 4.94 | 157,275 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,238 |
| Countries with Six Letters | 0 | - | 4.93 | 210,862 |
| Countries with W | 0 | - | 4.97 | 158,529 |
| Countries with Z | 0 | - | 4.98 | 288,424 |
| 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 | 133,032 |
| 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 | 207,595 |
| 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 | 152,010 |
| Countries that End in I | 0 | - | 4.94 | 134,604 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,611 |
| 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 | 126,272 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,264 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,962 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,790 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,144 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,692 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,090 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,370 |
| 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 | 48,951 |
| 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 | 212,646 |
| 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 | 118,524 |
