| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,644,662 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 737,818 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 167,346 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,732 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,255 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,575 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,430 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,751,362 |
| Landlocked Countries | 0 | - | 4.99 | 424,077 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,109,889 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,586 |
| Countries with Four Letters | 0 | - | 4.99 | 424,931 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,793,641 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,453 |
| Himalayan Countries | 0 | - | 4.94 | 139,620 |
| Andean Countries | 0 | - | 4.94 | 85,107 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,293 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,525 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,863 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,153 |
| Danube Countries | 0 | - | 4.97 | 72,233 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,351 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,657 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,763 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,260 |
| European Landlocked Countries | 0 | - | 4.99 | 147,409 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,015 |
| Countries with the Most Species | 0 | - | 4.99 | 103,442 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,143 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,692 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,802 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,640 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,715 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,039 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,446 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,864 |
| Countries in the Alps | 0 | - | 4.87 | 118,515 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,161 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,497 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,827 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,834 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,761 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,107 |
| Country Chain | 0 | - | 4.96 | 218,073 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,953 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,695 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,318 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,030 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,771 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,639 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,407 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,650 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,740 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,418 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,488 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,364 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,425 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,016 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,723 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,399 |
| Largest Countries By Category | 0 | - | 4.97 | 158,578 |
| Countries by Emojis | 0 | - | 4.99 | 241,286 |
| Countries by Countries | 0 | - | 4.96 | 63,462 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,383 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 322,955 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,034 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,356 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,630 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,930 |
| Islands by Country #1 | 0 | - | 4.90 | 176,032 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,057 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,396 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,263 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 218,240 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,484 |
| Name a Valid Country #3 | 0 | - | 4.99 | 265,220 |
| Name a Valid Country #1 | 0 | - | 4.99 | 293,915 |
| Name a Valid Country #2 | 0 | - | 4.98 | 253,284 |
| Name a Valid Country #4 | 0 | - | 4.97 | 258,333 |
| Name a Valid Country #5 | 0 | - | 4.99 | 209,255 |
| Name a Valid Country #6 | 0 | - | 4.95 | 142,204 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,491 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,182 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,687 |
| Island Countries | 0 | - | 4.99 | 711,880 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,777 |
| Northernmost Countries | 0 | - | 4.99 | 363,215 |
| Countries of South America | 0 | - | 5.00 | 930,281 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,668 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,152 |
| "Land" Countries | 0 | - | 4.98 | 337,951 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,509 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,561 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,506 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,984 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,768 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,389,433 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,202 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,502 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 237,575 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,555 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,276 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,674 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,430 |
| Random Countries by Borders | 0 | - | 4.99 | 82,876 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,119 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,522 |
| Countries with Megacities | 0 | - | 4.99 | 266,022 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,312 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,777 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,569 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,900 |
| Countries by Official Language | 0 | - | 4.95 | 195,690 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,193 |
| Countries in their Native Language | 0 | - | 4.99 | 199,466 |
| Independence from Whom | 0 | - | 4.99 | 212,647 |
| Subdivisions by Country | 0 | - | 4.87 | 50,543 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,139 |
| Megadiverse Countries | 0 | - | 4.96 | 135,167 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,504 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,465 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,361 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,169 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,395 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,718 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,819 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,479 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,759 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,214 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,124 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,279 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,345 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,071 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,487 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,612 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,906 |
| World Map Quiz | 0 | - | 4.81 | 65,400 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,410 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,543 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,891 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,761 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,389 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,087 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,233 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,365 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,562 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,602 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,611 |
| Widest Countries East to West | 0 | - | 4.92 | 130,256 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,545 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,053 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,449 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,949 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,824 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,317 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,454 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,858 |
| Countries with Double Letters | 0 | - | 4.96 | 96,731 |
| Countries that End in N | 0 | - | 4.95 | 171,617 |
| Countries with Five Letters | 0 | - | 4.96 | 283,281 |
| Countries with Six Letters | 0 | - | 4.94 | 214,068 |
| Countries with W | 0 | - | 4.96 | 160,686 |
| Countries with Z | 0 | - | 4.98 | 292,032 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,047 |
| Countries That End in U | 0 | - | 4.95 | 121,046 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,832 |
| Countries that End in O | 0 | - | 4.92 | 159,688 |
| Countries that End in R | 0 | - | 4.87 | 119,086 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,841 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,515 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,965 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,676 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,599 |
| Countries That End in Y | 0 | - | 4.91 | 186,011 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,228 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,101 |
| Countries that End in I | 0 | - | 4.94 | 135,226 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,415 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,954 |
| Countries That End in NIA | 0 | - | 4.92 | 109,937 |
| Countries That End in BIA | 0 | - | 4.93 | 149,423 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,357 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,646 |
| Countries That End in RIA | 0 | - | 4.93 | 126,955 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,241 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,162 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,980 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,418 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,970 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,705 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,211 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,495 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,744 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,560 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,537 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,231 |
| Countries that End in L | 0 | - | 4.94 | 157,008 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,828 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,309 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,165 |
