| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,622,444 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 720,612 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,447,679 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,101,395 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,770 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,706 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,341 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,491 |
| Countries with Four Letters | 0 | - | 4.99 | 422,365 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,571 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,581 |
| Landlocked Countries | 0 | - | 4.99 | 420,334 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 976,687 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,350 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,643 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 182,321 |
| Country Chain | 0 | - | 4.96 | 217,080 |
| Countries by Emojis | 0 | - | 4.99 | 239,674 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,921 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,611 |
| Islands by Country #1 | 0 | - | 4.88 | 175,274 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,517 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,872 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,719 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,766,622 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 144,118 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.93 | 59,939 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,581 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,001 |
| Name a Valid Country #1 | 0 | - | 4.99 | 289,835 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,679 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,554 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,963 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,411 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,636 |
| Himalayan Countries | 0 | - | 4.95 | 138,038 |
| Andean Countries | 0 | - | 4.95 | 84,233 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,459 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,280 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,097 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,536 |
| Danube Countries | 0 | - | 4.97 | 71,812 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,757 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,204 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,937 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,387 |
| European Landlocked Countries | 0 | - | 4.99 | 146,947 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,349 |
| Countries with the Most Species | 0 | - | 4.99 | 103,074 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,509 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,494 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,651 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,432 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,112 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,497 |
| Countries in the Alps | 0 | - | 4.87 | 117,941 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,090 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,671 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,539 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,434 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,283 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,826 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,455 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,325 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,066 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,694 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,559 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,415 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,057 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,338 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,350 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,492 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,164 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,675 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,787 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,095 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,626 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,093 |
| Largest Countries By Category | 0 | - | 4.97 | 157,902 |
| Countries by Countries | 0 | - | 4.97 | 62,999 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,212 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,493 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,171 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,003 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,149 |
| Island Countries | 0 | - | 4.99 | 710,325 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,692 |
| Northernmost Countries | 0 | - | 4.99 | 361,170 |
| Countries of South America | 0 | - | 5.00 | 924,900 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,774 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,448 |
| "Land" Countries | 0 | - | 4.98 | 336,163 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.91 | 13,129 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,918 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,190 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,108 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,747 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,462 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,288 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,681 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,197 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,074 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,042 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,186 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,807 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,077 |
| Five Countries by a Single Word by Continent | 0 | - | 4.91 | 78,117 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,713 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 195,167 |
| Random Countries by Borders | 0 | - | 4.99 | 82,429 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,044 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 239,793 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,434 |
| Countries with Megacities | 0 | - | 4.99 | 263,260 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,266 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,227 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,569 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,264 |
| Countries by Official Language | 0 | - | 4.95 | 194,910 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,919 |
| Countries in their Native Language | 0 | - | 4.99 | 198,436 |
| Independence from Whom | 0 | - | 4.99 | 211,681 |
| Subdivisions by Country | 0 | - | 4.86 | 50,354 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,955 |
| Megadiverse Countries | 0 | - | 4.96 | 134,869 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,768 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,252 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,840 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,057 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,896 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,470 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,194 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,928 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,556 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,034 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,322 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,786 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,087 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,859 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,249 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,408 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,620 |
| World Map Quiz | 0 | - | 4.81 | 64,842 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 137,880 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,178 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,762 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,080 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,818 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,742 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,697 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,834 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,961 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,345 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,422 |
| Widest Countries East to West | 0 | - | 4.92 | 129,490 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,415 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,150 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,056 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,632 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,400 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,693 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,306 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,759 |
| Countries with Double Letters | 0 | - | 4.97 | 95,370 |
| Countries that End in N | 0 | - | 4.95 | 170,403 |
| Countries with Five Letters | 0 | - | 4.96 | 281,317 |
| Countries with Six Letters | 0 | - | 4.94 | 212,819 |
| Countries with W | 0 | - | 4.97 | 159,713 |
| Countries with Z | 0 | - | 4.98 | 290,623 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,979 |
| Countries That End in U | 0 | - | 4.95 | 120,518 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,996 |
| Countries that End in O | 0 | - | 4.92 | 159,287 |
| Countries that End in R | 0 | - | 4.87 | 118,805 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,572 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,599 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,323 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,220 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,829 |
| Countries That End in Y | 0 | - | 4.91 | 185,722 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,530 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,603 |
| Countries that End in I | 0 | - | 4.94 | 134,951 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,720 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,668 |
| Countries That End in NIA | 0 | - | 4.92 | 109,626 |
| Countries That End in BIA | 0 | - | 4.93 | 148,978 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,881 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,204 |
| Countries That End in RIA | 0 | - | 4.93 | 126,644 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,774 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,085 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,409 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,799 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,337 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,414 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,796 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,358 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,298 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,287 |
