| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,601,237 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,093,341 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,769 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,168 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 116,992 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,726 |
| Countries with Four Letters | 0 | - | 4.99 | 419,992 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,521 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,724 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,117,074 |
| Companies by Country | 0 | - | 4.61 | 118,963 |
| Landlocked Countries | 0 | - | 4.99 | 416,040 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 318,291 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 715,379 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,826 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,943 |
| Country Chain | 0 | - | 4.96 | 216,316 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,150 |
| Countries by Emojis | 0 | - | 4.99 | 237,611 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,384 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,376 |
| Islands by Country #1 | 0 | - | 4.87 | 174,756 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,131 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,484 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,470 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,736,494 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,760 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,257 |
| Name a Valid Country #1 | 0 | - | 4.99 | 286,289 |
| Name a Valid Country #2 | 0 | - | 4.98 | 248,458 |
| Name a Valid Country #4 | 0 | - | 4.97 | 253,556 |
| Name a Valid Country #5 | 0 | - | 4.99 | 203,090 |
| Name a Valid Country #6 | 0 | - | 4.94 | 127,953 |
| Name a Valid Country #7 | 0 | - | 4.91 | 127,899 |
| Name a Valid Country #8 | 0 | - | 4.85 | 97,291 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,288 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,632 |
| Himalayan Countries | 0 | - | 4.95 | 136,245 |
| Andean Countries | 0 | - | 4.95 | 83,328 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,606 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,819 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,307 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,926 |
| Danube Countries | 0 | - | 4.97 | 71,334 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,117 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,791 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,023 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,975 |
| European Landlocked Countries | 0 | - | 4.99 | 146,052 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,660 |
| Countries with the Most Species | 0 | - | 4.99 | 97,771 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,806 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,300 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,478 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,810 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,649 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,115 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,762 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,134 |
| Countries in the Alps | 0 | - | 4.86 | 117,253 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,842 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,756 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,212 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,666 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,562 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,205 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,913 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,953 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,754 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,286 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,323 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,182 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,676 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,938 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,945 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,609 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,853 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,678 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,388 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,532 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,133 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,683 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,427 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,780 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,479 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,068 |
| Largest Countries By Category | 0 | - | 4.97 | 157,177 |
| Orthodox Countries | 0 | - | 4.92 | 130,809 |
| Countries by Countries | 0 | - | 4.96 | 62,531 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,113 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,862 |
| Battle to Country | 0 | - | 4.91 | 52,838 |
| Monarchies of Europe | 0 | - | 4.90 | 97,636 |
| Monarchies of Asia | 0 | - | 4.97 | 70,786 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,478 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,621 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,030 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,791 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,963 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,062 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,040 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,399 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 78,035 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,035 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,589 |
| Books by Country Quiz | 0 | - | 4.30 | 32,196 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,779 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,007 |
| Random Countries by Borders | 0 | - | 4.99 | 81,895 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,921 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,399 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,543 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,280 |
| Island Countries | 0 | - | 4.99 | 708,611 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,368,946 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,662 |
| Northernmost Countries | 0 | - | 4.99 | 359,075 |
| Countries of South America | 0 | - | 5.00 | 918,849 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,650 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,856,648 |
| "Land" Countries | 0 | - | 4.98 | 334,284 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 380,242 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,554 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,937 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 131,992 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,943 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,697 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 118,735 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,389 |
| Empty World Map without 20 Random Countries | 0 | - | 4.93 | 136,035 |
| Landforms by Country | 0 | - | 4.52 | 51,933 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,551 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,425 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,655 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,084 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,633 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,126 |
| Countries with Megacities | 0 | - | 4.99 | 248,632 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,992 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,464 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,371 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,415 |
| Countries by Official Language | 0 | - | 4.95 | 193,797 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,286 |
| Countries in their Native Language | 0 | - | 4.99 | 197,441 |
| Independence from Whom | 0 | - | 4.99 | 210,406 |
| Subdivisions by Country | 0 | - | 4.86 | 50,171 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,221 |
| Megadiverse Countries | 0 | - | 4.96 | 134,499 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,655 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,056 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,595 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,936 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,115 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,176 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,478 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,505 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,334 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,795 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,073 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,555 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,653 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,624 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,828 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,166 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,364 |
| World Map Quiz | 0 | - | 4.81 | 63,944 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,051 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,649 |
| Countries by Founding Story | 0 | - | 4.95 | 76,817 |
| Countries by Road Signs | 0 | - | 4.98 | 53,349 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,953 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,607 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,328 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,544 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,195 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,394 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,573 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,113 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,598 |
| Widest Countries East to West | 0 | - | 4.92 | 129,095 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,308 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,577 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,757 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,921 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,922 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,306 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,981 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,657 |
| Foods by Country of Origin #1 | 0 | - | 4.40 | 335,667 |
| Political Movements by Country | 0 | - | 4.46 | 72,366 |
| Countries with Double Letters | 0 | - | 4.96 | 93,822 |
| Countries that End in N | 0 | - | 4.94 | 157,254 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,219 |
| Countries with Six Letters | 0 | - | 4.93 | 210,852 |
| Countries with W | 0 | - | 4.97 | 158,512 |
| Countries with Z | 0 | - | 4.98 | 288,406 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,860 |
| Countries That End in U | 0 | - | 4.95 | 119,666 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,006 |
