| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,613,170 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,097,723 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,771 |
| Small Countries with Large Economies | 0 | - | 4.63 | 89,816 |
| Countries with Four Letters | 0 | - | 4.99 | 421,390 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,002 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,697 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,119 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,107 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,179 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,306,651 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,399 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,621 |
| Country Chain | 0 | - | 4.96 | 216,765 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,725 |
| Countries by Emojis | 0 | - | 4.99 | 238,503 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,637 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,596 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,822 |
| Islands by Country #1 | 0 | - | 4.88 | 175,051 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,329 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,681 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,595 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 215,825 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,401 |
| Name a Valid Country #1 | 0 | - | 4.99 | 288,445 |
| Name a Valid Country #2 | 0 | - | 4.98 | 249,932 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,853 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,209 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,865 |
| Name a Valid Country #7 | 0 | - | 4.91 | 128,759 |
| Name a Valid Country #8 | 0 | - | 4.85 | 98,129 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 718,639 |
| Landlocked Countries | 0 | - | 4.99 | 418,438 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,754,354 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,601 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,518 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,903 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,906 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,027 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,608 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,269 |
| Orthodox Countries | 0 | - | 4.92 | 131,233 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,445 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,057 |
| Battle to Country | 0 | - | 4.91 | 53,117 |
| Monarchies of Europe | 0 | - | 4.90 | 97,926 |
| Monarchies of Asia | 0 | - | 4.97 | 70,960 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,358 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,401 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,687 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,480 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,836 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 78,824 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,762 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,955 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,414 |
| Random Countries by Borders | 0 | - | 4.99 | 82,249 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,605 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,620 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,488 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,888 |
| Island Countries | 0 | - | 4.99 | 709,578 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,729 |
| Himalayan Countries | 0 | - | 4.94 | 137,196 |
| Andean Countries | 0 | - | 4.95 | 83,806 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,055 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,456 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,743 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,275 |
| Danube Countries | 0 | - | 4.97 | 71,603 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,471 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,001 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,555 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,622 |
| European Landlocked Countries | 0 | - | 4.99 | 146,714 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,053 |
| Countries with the Most Species | 0 | - | 4.99 | 102,857 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,191 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,410 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,570 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,272 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,942 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,322 |
| Countries in the Alps | 0 | - | 4.87 | 117,612 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,085 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,280 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,378 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,933 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,037 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,410 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,220 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,141 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,936 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,512 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,449 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,312 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,888 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,159 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,176 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,093 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,028 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,545 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,462 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,148 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,117 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,960 |
| Largest Countries By Category | 0 | - | 4.97 | 157,559 |
| Countries by Countries | 0 | - | 4.96 | 62,794 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,814 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,141 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,147 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,464 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,281 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,626 |
| Northernmost Countries | 0 | - | 4.99 | 360,279 |
| Companies by Country | 0 | - | 4.61 | 119,191 |
| Countries of South America | 0 | - | 5.00 | 922,402 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,325 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,198 |
| "Land" Countries | 0 | - | 4.98 | 335,699 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 381,753 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,515 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,610 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,472 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 80,215 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,834 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,262 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 129,190 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,866 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 137,149 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,850 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,757 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,804 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,723 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,587 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,884 |
| Countries with Megacities | 0 | - | 4.99 | 256,642 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,752 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,914 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,049 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,914 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,811 |
| Countries by Official Language | 0 | - | 4.95 | 194,570 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,439 |
| Countries in their Native Language | 0 | - | 4.99 | 198,118 |
| Independence from Whom | 0 | - | 4.99 | 211,222 |
| Subdivisions by Country | 0 | - | 4.86 | 50,271 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,632 |
| Megadiverse Countries | 0 | - | 4.96 | 134,741 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,480 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,161 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,727 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,005 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,667 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,353 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,906 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,817 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,467 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,970 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,870 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,691 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,963 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,754 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,117 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,305 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,076 |
| World Map Quiz | 0 | - | 4.81 | 64,443 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,415 |
| Random Countries Hidden in the World Map | 0 | - | 4.81 | 112,680 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,738 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,991 |
| Countries by Founding Story | 0 | - | 4.95 | 77,030 |
| Countries by Road Signs | 0 | - | 4.98 | 53,616 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,423 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,886 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,596 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,234 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,478 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,644 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,794 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,245 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,252 |
| Widest Countries East to West | 0 | - | 4.92 | 129,332 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,375 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,910 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,982 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,485 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,171 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,508 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,219 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,721 |
| Countries with Double Letters | 0 | - | 4.97 | 95,025 |
| Countries that End in N | 0 | - | 4.95 | 169,853 |
| Countries with Five Letters | 0 | - | 4.96 | 279,716 |
| Countries with Six Letters | 0 | - | 4.94 | 212,398 |
| Countries with W | 0 | - | 4.97 | 159,482 |
| Countries with Z | 0 | - | 4.98 | 289,720 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,673 |
| Countries That End in U | 0 | - | 4.95 | 120,383 |
