| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,655,402 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,913,159 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,126,227 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,762 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,398 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,601 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,782 |
| Countries with Four Letters | 0 | - | 4.99 | 426,040 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,144 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,033 |
| Landlocked Countries | 0 | - | 4.99 | 426,417 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,138 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,502 |
| Country Chain | 0 | - | 4.96 | 218,526 |
| Countries by Emojis | 0 | - | 4.99 | 242,601 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,634 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,973 |
| Islands by Country #1 | 0 | - | 4.90 | 176,412 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,284 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,602 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,425 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,807,316 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,218 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,156 |
| Name a Valid Country #1 | 0 | - | 4.99 | 295,587 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,339 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,334 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,185 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,400 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 743,748 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,500 |
| Himalayan Countries | 0 | - | 4.93 | 140,442 |
| Andean Countries | 0 | - | 4.94 | 85,586 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,731 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,180 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,292 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,534 |
| Danube Countries | 0 | - | 4.97 | 72,460 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,670 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,894 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,240 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,716 |
| European Landlocked Countries | 0 | - | 4.99 | 147,655 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,377 |
| Countries with the Most Species | 0 | - | 4.99 | 103,599 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,488 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,788 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,910 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,871 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,611 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,061 |
| Countries in the Alps | 0 | - | 4.87 | 118,842 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,759 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,973 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,999 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,079 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,020 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,308 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,463 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,909 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,457 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,223 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,907 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,773 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,597 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,840 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,935 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,960 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,652 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,252 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,730 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,904 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,270 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,545 |
| Largest Countries By Category | 0 | - | 4.97 | 158,940 |
| Countries by Countries | 0 | - | 4.96 | 63,698 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,317 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,421 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,686 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,139 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,904 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,820 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,947 |
| Island Countries | 0 | - | 4.99 | 712,722 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,254 |
| Northernmost Countries | 0 | - | 4.99 | 364,232 |
| Countries of South America | 0 | - | 5.00 | 933,295 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,276 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,890,715 |
| "Land" Countries | 0 | - | 4.98 | 338,516 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,806 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,757 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,700 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,133 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,972 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,395,003 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,557 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,766 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,320 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,214 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,832 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,189 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,577 |
| Random Countries by Borders | 0 | - | 4.99 | 83,134 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,742 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,292 |
| Countries with Megacities | 0 | - | 4.99 | 267,396 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,965 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,217 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,292 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,320 |
| Countries by Official Language | 0 | - | 4.95 | 196,093 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,753 |
| Countries in their Native Language | 0 | - | 4.99 | 199,821 |
| Independence from Whom | 0 | - | 4.99 | 213,192 |
| Subdivisions by Country | 0 | - | 4.87 | 50,638 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,546 |
| Megadiverse Countries | 0 | - | 4.96 | 141,708 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,017 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,553 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,741 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,235 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,336 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,882 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,169 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,588 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,108 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,271 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,624 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,419 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,462 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,170 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,600 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,905 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,493 |
| World Map Quiz | 0 | - | 4.81 | 65,806 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 140,136 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,487 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,748 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,357 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,147 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,607 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,701 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,479 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,593 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,786 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,716 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,830 |
| Widest Countries East to West | 0 | - | 4.92 | 130,771 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,612 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,295 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,532 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,091 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,028 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,518 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,515 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,904 |
| Countries with Double Letters | 0 | - | 4.96 | 97,199 |
| Countries that End in N | 0 | - | 4.95 | 172,199 |
| Countries with Five Letters | 0 | - | 4.96 | 284,144 |
| Countries with Six Letters | 0 | - | 4.94 | 214,611 |
| Countries with W | 0 | - | 4.96 | 161,036 |
| Countries with Z | 0 | - | 4.98 | 292,577 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,371 |
| Countries That End in U | 0 | - | 4.95 | 121,240 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,184 |
| Countries that End in O | 0 | - | 4.92 | 160,258 |
| Countries that End in R | 0 | - | 4.87 | 119,211 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,976 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,946 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,217 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,874 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,801 |
| Countries That End in Y | 0 | - | 4.91 | 186,109 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,521 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,321 |
| Countries that End in I | 0 | - | 4.94 | 135,350 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,687 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,087 |
| Countries That End in NIA | 0 | - | 4.92 | 110,094 |
| Countries That End in BIA | 0 | - | 4.93 | 149,631 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,707 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,809 |
| Countries That End in RIA | 0 | - | 4.93 | 127,087 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,438 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,713 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,250 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,698 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,247 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,836 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,361 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,554 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,956 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,668 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,782 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,481 |
| Countries that End in L | 0 | - | 4.94 | 157,174 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,190 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,360 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,567 |
