| City to Country Quiz #1 | 0 | - | 4.97 | 155,742 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,601 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,658 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,815,813 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,606,698 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,204,780 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,253 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,283 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,973 |
| Historical City to Country | 0 | - | 4.84 | 78,357 |
| Landlocked Countries | 0 | - | 4.99 | 417,181 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 563,334 |
| Pixelated World Map | 0 | - | 5.00 | 142,950 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,252 |
| Countries of the World in 1444 | 0 | - | 4.98 | 59,942 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,168 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,744,583 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 81,724 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,183 |
| Himalayan Countries | 0 | - | 4.95 | 136,737 |
| Andean Countries | 0 | - | 4.95 | 83,589 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,850 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,138 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,510 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,115 |
| Danube Countries | 0 | - | 4.97 | 71,479 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,292 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,891 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,282 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,272 |
| European Landlocked Countries | 0 | - | 4.99 | 146,182 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,856 |
| Countries with the Most Species | 0 | - | 4.99 | 102,326 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,989 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,352 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,533 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,202 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,846 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,227 |
| Countries in the Alps | 0 | - | 4.86 | 117,415 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,954 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,024 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,295 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,795 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,892 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,313 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,060 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,034 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,854 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,389 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,390 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,230 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,780 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,040 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,050 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,826 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,933 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,462 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,296 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,306 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,726 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,869 |
| Largest Countries By Category | 0 | - | 4.97 | 157,349 |
| Countries by Countries | 0 | - | 4.96 | 62,654 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,943 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,100 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,416 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,923 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,450 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,137 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,442 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,052 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,156 |
| Island Countries | 0 | - | 4.99 | 709,055 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,991 |
| Northernmost Countries | 0 | - | 4.99 | 359,664 |
| Countries of South America | 0 | - | 5.00 | 920,422 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,946 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,544 |
| "Land" Countries | 0 | - | 4.98 | 335,057 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,791 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,786 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,506 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,270 |
| City to Country Quiz #4 | 0 | - | 4.53 | 84,037 |
| City to Country Quiz #5 | 0 | - | 4.75 | 80,911 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,401 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,461 |
| Countries with Megacities | 0 | - | 4.99 | 249,364 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,313 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,649 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,634 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,623 |
| Countries by Official Language | 0 | - | 4.95 | 194,200 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,005 |
| Countries in their Native Language | 0 | - | 4.99 | 197,805 |
| Independence from Whom | 0 | - | 4.99 | 210,944 |
| Subdivisions by Country | 0 | - | 4.86 | 50,219 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,433 |
| Megadiverse Countries | 0 | - | 4.96 | 134,594 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,969 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,103 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,657 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,960 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,508 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,266 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,684 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,588 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,399 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,818 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,448 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,608 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,708 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,680 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,887 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,245 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,166 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,720 |
| World Map Quiz | 0 | - | 4.81 | 64,203 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 136,605 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,670 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,760 |
| Countries of the World With a Disappearing Map | 0 | - | 5.00 | 111,854 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,577 |
| Countries by Sports in 60 Seconds | 0 | - | 4.91 | 143,353 |
| Countries by Founding Story | 0 | - | 4.95 | 76,926 |
| Countries by Road Signs | 0 | - | 4.98 | 53,475 |
| Countries That Do Not Border | 0 | - | 4.99 | 59,808 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,157 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,728 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,464 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,853 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,333 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,515 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,679 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,174 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,997 |
| Widest Countries East to West | 0 | - | 4.92 | 129,210 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,339 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,722 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,945 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,990 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,037 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,408 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,144 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,688 |
| Countries With the Tallest People | 0 | - | 4.91 | 94,709 |
| Countries with Double Letters | 0 | - | 4.96 | 94,454 |
| Countries that End in N | 0 | - | 4.95 | 168,378 |
| Countries with Five Letters | 0 | - | 4.96 | 269,749 |
| Countries with Six Letters | 0 | - | 4.93 | 211,662 |
| Countries with W | 0 | - | 4.97 | 159,064 |
| Countries with Z | 0 | - | 4.98 | 289,138 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,270 |
| Countries That End in U | 0 | - | 4.95 | 120,123 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,320 |
| Countries that End in O | 0 | - | 4.92 | 158,985 |
| Countries that End in R | 0 | - | 4.87 | 118,580 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,369 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,903 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,843 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,891 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,473 |
| Countries That End in Y | 0 | - | 4.90 | 185,497 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,949 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,179 |
| Countries that End in I | 0 | - | 4.94 | 134,720 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,777 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,453 |
| Countries That End in NIA | 0 | - | 4.92 | 109,342 |
| Countries That End in BIA | 0 | - | 4.93 | 148,639 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,496 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,837 |
| Countries That End in RIA | 0 | - | 4.93 | 126,390 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,411 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,215 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,947 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,277 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,896 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,189 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,507 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,033 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,910 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,072 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,598 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,302 |
| Countries with the Highest Scrabble Score | 0 | - | 4.97 | 63,319 |
| Countries that End in L | 0 | - | 4.94 | 156,354 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,182 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,095 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,423 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,882 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,418 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,885 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,336 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,094 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,886 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,314 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,539 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,543 |
