| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,584,277 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 710,673 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,862,909 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,086,565 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,502 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 162,892 |
| Solve the Secret Country #2 | 0 | - | 4.84 | 115,881 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,104 |
| Countries of Africa | 0 | - | 5.00 | 2,505,021 |
| Countries with Four Letters | 0 | - | 4.99 | 418,114 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 67,664 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,057 |
| Landlocked Countries | 0 | - | 4.99 | 412,984 |
| Countries of the World - One Minute Sprint | 0 | - | 4.35 | 955,691 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,248 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,176 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,298 |
| Country Chain | 0 | - | 4.96 | 215,590 |
| Countries by Emojis | 0 | - | 4.99 | 235,874 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,036 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 316,636 |
| Islands by Country #1 | 0 | - | 4.87 | 174,409 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,852 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,225 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,294 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,710,814 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 213,541 |
| Name a Valid Country #3 | 0 | - | 4.99 | 259,593 |
| Name a Valid Country #1 | 0 | - | 4.99 | 282,966 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,137 |
| Name a Valid Country #4 | 0 | - | 4.97 | 251,288 |
| Name a Valid Country #5 | 0 | - | 4.99 | 189,590 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,213 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,309 |
| Himalayan Countries | 0 | - | 4.95 | 135,105 |
| Andean Countries | 0 | - | 4.94 | 82,691 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,103 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,026 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,790 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,497 |
| Danube Countries | 0 | - | 4.97 | 71,012 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,662 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,469 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,320 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,234 |
| European Landlocked Countries | 0 | - | 4.99 | 145,682 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,074 |
| Countries with the Most Species | 0 | - | 4.99 | 95,200 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,228 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,179 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,337 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,914 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,526 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,888 |
| Countries in the Alps | 0 | - | 4.87 | 116,709 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,491 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,112 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,954 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,339 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,076 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,942 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,486 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,696 |
| Largest Country by Body of Water | 0 | - | 4.95 | 56,399 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,983 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,169 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,004 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,385 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,692 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,688 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,910 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,580 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,209 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,692 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,902 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,411 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,552 |
| Largest Countries By Category | 0 | - | 4.97 | 156,649 |
| Countries by Countries | 0 | - | 4.96 | 62,185 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,250 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,937 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,308 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,674 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,165 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,874 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,069 |
| Island Countries | 0 | - | 4.99 | 707,306 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,542 |
| Northernmost Countries | 0 | - | 4.99 | 357,332 |
| Countries of South America | 0 | - | 5.00 | 913,612 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,937 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,654 |
| "Land" Countries | 0 | - | 4.98 | 333,459 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,324 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,384 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,275 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,291 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,776 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,418 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,550 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,573 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,299 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 222,594 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,116 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,289 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,546 |
| Random Countries by Borders | 0 | - | 4.99 | 81,589 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,037 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 236,134 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,896 |
| Countries with Megacities | 0 | - | 4.99 | 246,277 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,819 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,750 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,275 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,689 |
| Countries by Official Language | 0 | - | 4.95 | 192,612 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,924 |
| Countries in their Native Language | 0 | - | 4.99 | 196,500 |
| Independence from Whom | 0 | - | 4.99 | 209,513 |
| Subdivisions by Country | 0 | - | 4.86 | 50,036 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,600 |
| Megadiverse Countries | 0 | - | 4.97 | 133,838 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,671 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,883 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,380 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,840 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,565 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,945 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,609 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,073 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,185 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,719 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,421 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,373 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,443 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,459 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,611 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,986 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,384 |
| World Map Quiz | 0 | - | 4.81 | 63,388 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 134,531 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,294 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,233 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,189 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,894 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,866 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,543 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,785 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,981 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,188 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,888 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,274 |
| Widest Countries East to West | 0 | - | 4.92 | 128,537 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,194 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,102 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,528 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,634 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,530 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,962 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,034 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,553 |
| Countries with Double Letters | 0 | - | 4.97 | 93,248 |
| Countries that End in N | 0 | - | 4.94 | 156,310 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,520 |
| Countries with Six Letters | 0 | - | 4.93 | 210,215 |
| Countries with W | 0 | - | 4.97 | 158,119 |
| Countries with Z | 0 | - | 4.98 | 287,588 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,445 |
| Countries That End in U | 0 | - | 4.95 | 119,457 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,378 |
| Countries that End in O | 0 | - | 4.92 | 158,486 |
| Countries that End in R | 0 | - | 4.86 | 118,213 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,816 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,890 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,197 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,400 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,582 |
| Countries That End in Y | 0 | - | 4.90 | 185,161 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,201 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,570 |
| Countries that End in I | 0 | - | 4.94 | 134,325 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,041 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,151 |
| Countries That End in NIA | 0 | - | 4.92 | 108,941 |
| Countries That End in BIA | 0 | - | 4.92 | 147,625 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 165,991 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,422 |
| Countries That End in RIA | 0 | - | 4.93 | 126,023 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,929 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,011 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,451 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,833 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,272 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,876 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,047 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,568 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,416 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,774 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,028 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,709 |
