| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,650,484 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 741,189 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,365 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,599 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,841,059 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,119,810 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,097 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,940 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,214 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,533 |
| Countries with Four Letters | 0 | - | 4.99 | 425,535 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,913 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,774 |
| Landlocked Countries | 0 | - | 4.99 | 425,153 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 982,097 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,797 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,898 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,302 |
| Country Chain | 0 | - | 4.96 | 218,362 |
| Countries by Emojis | 0 | - | 4.99 | 241,738 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,524 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,582 |
| Islands by Country #1 | 0 | - | 4.90 | 176,260 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,187 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,509 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,357 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,801,073 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,748 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,271 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,521 |
| Name a Valid Country #3 | 0 | - | 4.99 | 265,855 |
| Name a Valid Country #1 | 0 | - | 4.99 | 294,959 |
| Name a Valid Country #2 | 0 | - | 4.98 | 253,988 |
| Name a Valid Country #4 | 0 | - | 4.97 | 258,986 |
| Name a Valid Country #5 | 0 | - | 4.99 | 209,863 |
| Name a Valid Country #6 | 0 | - | 4.95 | 144,802 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,968 |
| Himalayan Countries | 0 | - | 4.93 | 140,009 |
| Andean Countries | 0 | - | 4.94 | 85,312 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,469 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,827 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,038 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,329 |
| Danube Countries | 0 | - | 4.97 | 72,320 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,493 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,765 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,991 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,492 |
| European Landlocked Countries | 0 | - | 4.99 | 147,542 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,203 |
| Countries with the Most Species | 0 | - | 4.99 | 103,521 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,329 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,746 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,854 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,793 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,527 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,962 |
| Countries in the Alps | 0 | - | 4.87 | 118,690 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,492 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,759 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,923 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,971 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,886 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,195 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,332 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,813 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,381 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,128 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,826 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,699 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,506 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,737 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,834 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,703 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,565 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,707 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,601 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,481 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,015 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,477 |
| Largest Countries By Category | 0 | - | 4.97 | 158,777 |
| Countries by Countries | 0 | - | 4.96 | 63,584 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,192 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,381 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,049 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,013 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,526 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,410 |
| Island Countries | 0 | - | 4.99 | 712,356 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,167 |
| Northernmost Countries | 0 | - | 4.99 | 363,747 |
| Countries of South America | 0 | - | 5.00 | 931,905 |
| Countries of Oceania | 0 | - | 5.00 | 1,062,433 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,887,614 |
| "Land" Countries | 0 | - | 4.98 | 338,281 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,666 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,672 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,613 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,051 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,872 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,392,469 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,034 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,991 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,612 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,950 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,496 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 238,534 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 137,351 |
| Random Countries by Borders | 0 | - | 4.99 | 83,035 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,520 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.96 | 242,513 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,006 |
| Countries with Megacities | 0 | - | 4.99 | 266,840 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,725 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,035 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,039 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,161 |
| Countries by Official Language | 0 | - | 4.95 | 195,903 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,501 |
| Countries in their Native Language | 0 | - | 4.99 | 199,657 |
| Independence from Whom | 0 | - | 4.99 | 212,955 |
| Subdivisions by Country | 0 | - | 4.87 | 50,591 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,361 |
| Megadiverse Countries | 0 | - | 4.96 | 135,249 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,869 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,512 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,423 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,211 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,530 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,816 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,047 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,545 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,799 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,243 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,429 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,351 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,415 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,128 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,559 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,669 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,215 |
| World Map Quiz | 0 | - | 4.81 | 65,605 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 139,833 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,000 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,665 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,151 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,003 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,496 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,422 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,370 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,478 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,675 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,655 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,548 |
| Widest Countries East to West | 0 | - | 4.92 | 130,400 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,581 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,192 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,497 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,024 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,939 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,426 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,480 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,885 |
| Countries with Double Letters | 0 | - | 4.96 | 96,982 |
| Countries that End in N | 0 | - | 4.95 | 171,847 |
| Countries with Five Letters | 0 | - | 4.96 | 283,636 |
| Countries with Six Letters | 0 | - | 4.94 | 214,369 |
| Countries with W | 0 | - | 4.96 | 160,878 |
| Countries with Z | 0 | - | 4.98 | 292,335 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,235 |
| Countries That End in U | 0 | - | 4.95 | 121,153 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,037 |
| Countries that End in O | 0 | - | 4.92 | 160,178 |
| Countries that End in R | 0 | - | 4.87 | 119,155 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,909 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,759 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,100 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,781 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,714 |
| Countries That End in Y | 0 | - | 4.91 | 186,074 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,399 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,231 |
| Countries that End in I | 0 | - | 4.94 | 135,289 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,561 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,031 |
| Countries That End in NIA | 0 | - | 4.92 | 110,021 |
| Countries That End in BIA | 0 | - | 4.93 | 149,546 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,479 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,735 |
| Countries That End in RIA | 0 | - | 4.93 | 127,032 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,349 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,480 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,116 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,556 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,121 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,781 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,298 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,527 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,861 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,635 |
