| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,632,347 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,339 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,908 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,784 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,976 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,910 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,586,178 |
| Landlocked Countries | 0 | - | 4.99 | 422,022 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,105,307 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,523 |
| Countries with Four Letters | 0 | - | 4.99 | 423,307 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,779,069 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,476 |
| Himalayan Countries | 0 | - | 4.94 | 138,750 |
| Andean Countries | 0 | - | 4.93 | 84,616 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,819 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,837 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,441 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,818 |
| Danube Countries | 0 | - | 4.97 | 72,013 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,017 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,425 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,322 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,798 |
| European Landlocked Countries | 0 | - | 4.99 | 147,149 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,651 |
| Countries with the Most Species | 0 | - | 4.99 | 103,245 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,774 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,597 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,724 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,055 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,545 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,330 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,234 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,664 |
| Countries in the Alps | 0 | - | 4.87 | 118,214 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,156 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,046 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,653 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,599 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,516 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,947 |
| Country Chain | 0 | - | 4.96 | 217,390 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,682 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,497 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,182 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,856 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,661 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,529 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,234 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,475 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,528 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,919 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,311 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 63,837 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,082 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,962 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,129 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,236 |
| Largest Countries By Category | 0 | - | 4.97 | 158,220 |
| Countries by Emojis | 0 | - | 4.99 | 240,391 |
| Countries by Countries | 0 | - | 4.96 | 63,229 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,101 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 321,716 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,696 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,289 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,567 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,677 |
| Islands by Country #1 | 0 | - | 4.88 | 175,471 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,637 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,032 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,808 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 217,377 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,643 |
| Name a Valid Country #1 | 0 | - | 4.99 | 291,217 |
| Name a Valid Country #2 | 0 | - | 4.98 | 251,453 |
| Name a Valid Country #4 | 0 | - | 4.97 | 256,620 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,636 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,960 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 722,689 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,605 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,509 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,295 |
| Island Countries | 0 | - | 4.99 | 711,065 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,922 |
| Northernmost Countries | 0 | - | 4.99 | 361,977 |
| Countries of South America | 0 | - | 5.00 | 927,412 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,992 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,426 |
| "Land" Countries | 0 | - | 4.98 | 337,351 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,163 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,340 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,265 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,855 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,597 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,751 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,931 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,343 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,661 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,580 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,614 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,122 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,190 |
| Random Countries by Borders | 0 | - | 4.99 | 82,628 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,418 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,907 |
| Countries with Megacities | 0 | - | 4.99 | 264,586 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,748 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,473 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,007 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,546 |
| Countries by Official Language | 0 | - | 4.95 | 195,256 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,381 |
| Countries in their Native Language | 0 | - | 4.99 | 199,051 |
| Independence from Whom | 0 | - | 4.99 | 212,107 |
| Subdivisions by Country | 0 | - | 4.86 | 50,432 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,740 |
| Megadiverse Countries | 0 | - | 4.96 | 135,015 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,097 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,351 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,237 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,104 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,142 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,598 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,475 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,033 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,662 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,147 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,677 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,884 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,206 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,966 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,350 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,498 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,190 |
| World Map Quiz | 0 | - | 4.81 | 65,092 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,310 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,351 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,103 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,281 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,998 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,198 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,896 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,015 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,303 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,440 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,579 |
| Widest Countries East to West | 0 | - | 4.92 | 129,650 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,458 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,382 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,123 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,769 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,604 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,873 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,375 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,797 |
| Countries with Double Letters | 0 | - | 4.96 | 96,237 |
| Countries that End in N | 0 | - | 4.95 | 171,123 |
| Countries with Five Letters | 0 | - | 4.96 | 282,469 |
| Countries with Six Letters | 0 | - | 4.94 | 213,548 |
| Countries with W | 0 | - | 4.97 | 160,322 |
| Countries with Z | 0 | - | 4.98 | 291,445 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,697 |
| Countries That End in U | 0 | - | 4.95 | 120,852 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,457 |
| Countries that End in O | 0 | - | 4.92 | 159,508 |
| Countries that End in R | 0 | - | 4.87 | 118,968 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,730 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,084 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,692 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,471 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,397 |
| Countries That End in Y | 0 | - | 4.91 | 185,871 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,913 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,854 |
| Countries that End in I | 0 | - | 4.94 | 135,089 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,099 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,821 |
| Countries That End in NIA | 0 | - | 4.92 | 109,785 |
| Countries That End in BIA | 0 | - | 4.93 | 149,199 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,117 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,424 |
| Countries That End in RIA | 0 | - | 4.93 | 126,805 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,019 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,597 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,696 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,115 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,667 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,575 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,024 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,443 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,521 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,419 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,278 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,973 |
| Countries that End in L | 0 | - | 4.94 | 156,839 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,748 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,262 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,021 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,952 |
