| Countries with Wild Tigers | 0 | - | 4.96 | 137,169 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,449 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,470 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,783,451 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,190 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,564 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 33,164 |
| Landlocked Countries | 0 | - | 4.99 | 424,562 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,796,452 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,957 |
| 20 Random Country Flags | 0 | - | 4.99 | 617,609 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,029 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,477 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,845 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,448 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,318 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,993 |
| Island Countries | 0 | - | 4.99 | 712,091 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,648 |
| Himalayan Countries | 0 | - | 4.94 | 139,782 |
| Andean Countries | 0 | - | 4.94 | 85,191 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,373 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,655 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,938 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,229 |
| Danube Countries | 0 | - | 4.97 | 72,274 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,421 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,709 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,861 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,362 |
| European Landlocked Countries | 0 | - | 4.99 | 147,461 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,093 |
| Countries with the Most Species | 0 | - | 4.99 | 103,489 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,240 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,710 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,823 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,750 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,482 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,907 |
| Countries in the Alps | 0 | - | 4.87 | 118,586 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,326 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,600 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,875 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,894 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,819 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,139 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,239 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,766 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,338 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,069 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,796 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,664 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,453 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,687 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,775 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,530 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,528 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,543 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,488 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,218 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,850 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,430 |
| Largest Countries By Category | 0 | - | 4.97 | 158,663 |
| Countries by Countries | 0 | - | 4.96 | 63,512 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,811 |
| Countries that Produce the Most Beer | 0 | - | 4.85 | 131,566 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,101 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,361 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,644 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,989 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,320 |
| Northernmost Countries | 0 | - | 4.99 | 363,421 |
| Countries of South America | 0 | - | 5.00 | 930,955 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,337 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,522 |
| "Land" Countries | 0 | - | 4.98 | 338,068 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,999 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,641 |
| Name a Valid African Country | 0 | - | 4.98 | 154,868 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,875 |
| Countries that Beat Australia | 0 | - | 4.92 | 93,333 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,324 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,027 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,824 |
| Countries with Megacities | 0 | - | 4.99 | 266,436 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,533 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,923 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,829 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,043 |
| Countries by Official Language | 0 | - | 4.95 | 195,778 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,316 |
| Countries in their Native Language | 0 | - | 4.99 | 199,561 |
| Independence from Whom | 0 | - | 4.99 | 212,780 |
| Subdivisions by Country | 0 | - | 4.87 | 50,570 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,236 |
| Megadiverse Countries | 0 | - | 4.96 | 135,199 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,767 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,484 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,385 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,184 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,446 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,768 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,927 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,511 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 55,123 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,782 |
| Animal Populations of Countries | 0 | - | 4.52 | 44,019 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,224 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,219 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,314 |
| Strongest Nation Brands | 0 | - | 4.50 | 37,762 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,379 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,104 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,516 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,635 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,046 |
| World Map Quiz | 0 | - | 4.81 | 65,469 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,645 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,591 |
| Countries by Founding Story | 0 | - | 4.95 | 77,683 |
| Countries by Road Signs | 0 | - | 4.98 | 54,259 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,008 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,951 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,438 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,245 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,294 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,416 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,609 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,621 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,176 |
| Widest Countries East to West | 0 | - | 4.92 | 130,329 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,565 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,113 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,471 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,985 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,871 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,368 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,468 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,164 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,866 |
| Countries with Double Letters | 0 | - | 4.96 | 96,823 |
| Countries that End in N | 0 | - | 4.95 | 171,700 |
| Countries with Five Letters | 0 | - | 4.96 | 283,411 |
| Countries with Six Letters | 0 | - | 4.94 | 214,180 |
| Countries with W | 0 | - | 4.96 | 160,757 |
| Countries with Z | 0 | - | 4.98 | 292,146 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,108 |
| Countries That End in U | 0 | - | 4.95 | 121,082 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,918 |
| Countries that End in O | 0 | - | 4.92 | 159,729 |
| Countries that End in R | 0 | - | 4.87 | 119,116 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,869 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,607 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,014 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,726 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,651 |
| Countries That End in Y | 0 | - | 4.91 | 186,029 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,306 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,145 |
| Countries that End in I | 0 | - | 4.94 | 135,258 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,471 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,982 |
| Countries That End in NIA | 0 | - | 4.92 | 109,966 |
| Countries That End in BIA | 0 | - | 4.93 | 149,468 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,402 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,672 |
| Countries That End in RIA | 0 | - | 4.93 | 126,989 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,275 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,300 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,038 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,469 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,045 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,742 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,236 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,514 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,795 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,587 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,592 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,276 |
| Countries that End in L | 0 | - | 4.94 | 157,043 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,032 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,317 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,903 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,578 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,279 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,241 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,014 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,350 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,144 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,828 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,124 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,193 |
| Top 15 Countries with the Most Cows | 0 | - | 4.74 | 107,443 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,786 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,163 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,844,442 |
| One Border Countries | 0 | - | 4.98 | 471,346 |
| Countries that Beat China | 0 | - | 4.85 | 116,588 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,448 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,647,129 |
