| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,595,553 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 713,487 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,967 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,784 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,035,413 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,091,312 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,373 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,740 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,605 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,515 |
| Countries with Four Letters | 0 | - | 4.99 | 419,381 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,222 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,493 |
| Landlocked Countries | 0 | - | 4.99 | 415,093 |
| Countries of the World - One Minute Sprint | 0 | - | 4.35 | 957,426 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,775 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,618 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,722 |
| Country Chain | 0 | - | 4.96 | 216,037 |
| Countries by Emojis | 0 | - | 4.99 | 237,189 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,273 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,719 |
| Islands by Country #1 | 0 | - | 4.87 | 174,633 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,034 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,384 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,410 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,728,717 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,008 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,712 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,408 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,388 |
| Name a Valid Country #3 | 0 | - | 4.99 | 260,291 |
| Name a Valid Country #1 | 0 | - | 4.99 | 284,688 |
| Name a Valid Country #2 | 0 | - | 4.98 | 247,015 |
| Name a Valid Country #4 | 0 | - | 4.97 | 252,380 |
| Name a Valid Country #5 | 0 | - | 4.99 | 190,297 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,823 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,184 |
| Himalayan Countries | 0 | - | 4.95 | 135,888 |
| Andean Countries | 0 | - | 4.94 | 83,122 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,449 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,560 |
| Coffee Producing Countries | 0 | - | 4.82 | 66,149 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,801 |
| Danube Countries | 0 | - | 4.97 | 71,241 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,959 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,679 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,810 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,731 |
| European Landlocked Countries | 0 | - | 4.99 | 145,942 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,474 |
| Countries with the Most Species | 0 | - | 4.99 | 95,325 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,606 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,255 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,430 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,046 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,700 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,057 |
| Countries in the Alps | 0 | - | 4.86 | 117,082 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,731 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,541 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,141 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,562 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,345 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,124 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,760 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,877 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,665 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,190 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,262 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,128 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,597 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,858 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,873 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,405 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,776 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,341 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,985 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,123 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,116 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,710 |
| Largest Countries By Category | 0 | - | 4.97 | 156,985 |
| Countries by Countries | 0 | - | 4.96 | 62,417 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,621 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,012 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,916 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,609 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,663 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,624 |
| Island Countries | 0 | - | 4.99 | 708,213 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,401 |
| Northernmost Countries | 0 | - | 4.99 | 358,568 |
| Countries of South America | 0 | - | 5.00 | 917,390 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,555 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,853,384 |
| "Land" Countries | 0 | - | 4.98 | 334,035 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,670 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,568 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,475 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,434 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,976 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,366,283 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,062 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,253 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,735 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,740 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,697 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 235,358 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 134,207 |
| Random Countries by Borders | 0 | - | 4.99 | 81,809 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,590 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 237,259 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,839 |
| Countries with Megacities | 0 | - | 4.99 | 248,043 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,711 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,307 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,094 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,261 |
| Countries by Official Language | 0 | - | 4.95 | 193,106 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,603 |
| Countries in their Native Language | 0 | - | 4.99 | 196,952 |
| Independence from Whom | 0 | - | 4.99 | 210,085 |
| Subdivisions by Country | 0 | - | 4.86 | 50,129 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,024 |
| Megadiverse Countries | 0 | - | 4.97 | 134,213 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,109 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,001 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,523 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,898 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,852 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,109 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,293 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,384 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,283 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,778 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,865 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,500 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,604 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,574 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,780 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,111 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,042 |
| World Map Quiz | 0 | - | 4.81 | 63,741 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 135,526 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,496 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,546 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,730 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,482 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,210 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,236 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,084 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,289 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,475 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,059 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,508 |
| Widest Countries East to West | 0 | - | 4.92 | 129,004 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,281 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,452 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,640 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,844 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,794 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,205 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 76,382 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,634 |
| Countries with Double Letters | 0 | - | 4.96 | 93,653 |
| Countries that End in N | 0 | - | 4.94 | 157,111 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,987 |
| Countries with Six Letters | 0 | - | 4.93 | 210,649 |
| Countries with W | 0 | - | 4.97 | 158,405 |
| Countries with Z | 0 | - | 4.98 | 288,200 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,739 |
| Countries That End in U | 0 | - | 4.95 | 119,600 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,846 |
| Countries that End in O | 0 | - | 4.92 | 158,640 |
| Countries that End in R | 0 | - | 4.87 | 118,361 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,924 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,381 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,520 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,629 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,179 |
| Countries That End in Y | 0 | - | 4.90 | 185,278 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,593 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,881 |
| Countries that End in I | 0 | - | 4.94 | 134,526 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,436 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,286 |
| Countries That End in NIA | 0 | - | 4.92 | 109,109 |
| Countries That End in BIA | 0 | - | 4.92 | 147,842 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,235 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,622 |
| Countries That End in RIA | 0 | - | 4.93 | 126,188 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,163 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,658 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,654 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,011 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,557 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,016 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,269 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,777 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,666 |
