| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 33,996,162 |
| Country Shape Quiz #1 | 0 | - | 4.91 | 733,287 |
| Country Shape Quiz #2 | 0 | - | 4.94 | 342,745 |
| Country Shape Quiz #3 | 0 | - | 4.94 | 245,475 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,163,282 |
| Biggest Countries by Area | 0 | - | 4.99 | 825,621 |
| Spanish-Speaking Countries Quiz | 0 | - | 4.91 | 294,518 |
| Island Countries Quiz | 0 | - | 4.99 | 575,087 |
| Northernmost Countries Quiz | 0 | - | 4.98 | 293,443 |
| Southernmost Countries of the World | 0 | - | 4.99 | 181,599 |
| Majority Muslim Countries | 0 | - | 4.96 | 280,752 |
| Countries with the Most Borders | 0 | - | 4.96 | 316,915 |
| Countries with the Longest Coastlines | 0 | - | 4.85 | 351,917 |
| Countries That Border Russia | 0 | - | 4.98 | 366,711 |
| Countries and Languages Quiz | 0 | - | 4.86 | 214,997 |
| Communist Countries in History | 0 | - | 4.47 | 381,704 |
| Countries with the Most Billionaires | 0 | - | 4.93 | 254,718 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 285,870 |
| Commonwealth of Nations Countries | 0 | - | 4.92 | 204,763 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 305,746 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 300,207 |
| Biggest US Cities by Decade | 0 | - | 4.93 | 132,474 |
| One Border Countries | 0 | - | 4.98 | 357,474 |
| NATO Countries Quiz | 0 | - | 4.97 | 201,142 |
| EU Countries Quiz | 0 | - | 4.99 | 206,281 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,451,329 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,243,259 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 130,789 |
| Countries by Independence Day Quiz | 0 | - | 4.48 | 41,817 |
| Countries that Start with A | 0 | - | 4.96 | 1,622,021 |
| Countries that Start with B | 0 | - | 4.94 | 1,759,498 |
| Countries that Start with C | 0 | - | 4.95 | 1,394,172 |
| Countries that Start with D | 0 | - | 4.96 | 460,574 |
| Countries that Start with E | 0 | - | 4.93 | 1,027,841 |
| Countries that Start with G | 0 | - | 4.95 | 1,124,948 |
| Countries that Start with H | 0 | - | 4.92 | 388,014 |
| Countries that Start with I | 0 | - | 4.90 | 972,531 |
| Countries that Start with J | 0 | - | 4.96 | 391,308 |
| Countries that Start with K | 0 | - | 4.94 | 568,211 |
| Countries that Start with L | 0 | - | 4.98 | 809,623 |
| Countries that Start with N | 0 | - | 4.90 | 830,894 |
| Countries that Start with P | 0 | - | 4.94 | 918,130 |
| Countries that Start with R | 0 | - | 4.41 | 297,720 |
| Countries that Start with S | 0 | - | 4.97 | 1,350,577 |
| Countries that Start with T | 0 | - | 4.88 | 755,461 |
| Countries that Start with U | 0 | - | 4.97 | 681,657 |
| Countries that Start with V | 0 | - | 4.97 | 454,045 |
| Countries that Start with F | 0 | - | 4.74 | 421,229 |
| Countries that Start with M | 0 | - | 4.95 | 1,055,963 |
| Countries that Border China | 0 | - | 4.97 | 211,156 |
| Countries in World War II | 0 | - | 4.47 | 676,974 |
| Countries in World War I | 0 | - | 4.92 | 182,088 |
| Countries with Four Letters | 0 | - | 4.99 | 320,110 |
| Countries of Africa | 0 | - | 5.00 | 1,722,853 |
| Countries of South America | 0 | - | 5.00 | 619,096 |
| Countries of North America Quiz | 0 | - | 5.00 | 702,011 |
| Countries of Oceania | 0 | - | 5.00 | 707,961 |
| Vietnam War Countries | 0 | - | 4.78 | 76,396 |
| Countries with the Most Military Troops | 0 | - | 4.93 | 205,701 |
| Countries Bordering France | 0 | - | 4.90 | 308,125 |
| Countries with Nuclear Weapons | 0 | - | 4.90 | 198,903 |
| Countries Bordering Germany | 0 | - | 4.99 | 291,203 |
| Countries Bordering China Since 1914 | 0 | - | 4.94 | 69,822 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,056 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 252,462 |
| Countries "Ruled" by King Charles III | 0 | - | 4.74 | 64,845 |
| Countries of the Soviet Union | 0 | - | 4.99 | 145,568 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 91,688 |
| Countries by Clue #1 | 0 | - | 4.89 | 195,289 |
| Countries with Five Letters Quiz | 0 | - | 4.92 | 191,830 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,235 |
| Independence from Whom | 0 | - | 4.99 | 152,465 |
| Countries with Z | 0 | - | 4.99 | 222,471 |
| Holy Roman Empire Countries | 0 | - | 4.57 | 37,346 |
| Political Movements by Country | 0 | - | 4.49 | 61,751 |
| "Land" Countries | 0 | - | 4.98 | 261,625 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,251 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.95 | 202,163 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 172,589 |
| Who Controlled These Colonies? | 0 | - | 4.73 | 100,043 |
| Countries with the Longest Total Borders | 0 | - | 4.98 | 245,903 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 146,623 |
| Biggest Cities in History | 0 | - | 4.49 | 70,122 |
| Warsaw Pact Countries | 0 | - | 4.90 | 64,375 |
| Inventions by Country #1 | 0 | - | 4.42 | 41,683 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,119 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,151 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 180,953 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,081 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,054 |
| Historical City to Country | 0 | - | 4.81 | 66,194 |
| Countries of the Japanese Empire | 0 | - | 4.95 | 74,424 |
| Countries in the Ottoman Empire | 0 | - | 4.92 | 50,484 |
| Countries Settled by Vikings | 0 | - | 4.92 | 91,544 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 341,301 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 193,408 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,307,213 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 128,586 |
| Biggest European Cities by Century | 0 | - | 4.97 | 104,758 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,493 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 71,767 |
| Former Countries | 0 | - | 4.56 | 100,147 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 112,744 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 223,974 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,469 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,339 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 56,693 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.91 | 58,948 |
| Guerrillas by Country | 0 | - | 4.42 | 34,759 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,462 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.83 | 993,471 |
| World Map without 12 Countries | 0 | - | 4.96 | 277,939 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,741 |
| Neutral European Countries of WWII | 0 | - | 4.95 | 110,242 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.56 | 68,137 |
| Every Country Shape | 0 | - | 4.99 | 311,609 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,864,704 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,229 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 216,815 |
| Countries with Megacities | 0 | - | 4.99 | 158,128 |
| Countries of Europe by Population | 0 | - | 4.98 | 107,950 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 167,387 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 126,588 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 122,538 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,634,802 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.94 | 190,709 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,407 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 65,580 |
| One Country By Letter By Continent | 0 | - | 4.99 | 35,070 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,504 |
| Most Populous Countries in 1800 | 0 | - | 4.25 | 32,897 |
| Most Populous Countries by Year | 0 | - | 4.77 | 78,637 |
| Countries of Europe After World War II | 0 | - | 4.97 | 142,685 |
| Countries of Europe Before World War I | 0 | - | 5.00 | 111,529 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,295 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 71,793 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,276 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 124,556 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.96 | 186,885 |
| Most Recently-Settled Countries | 0 | - | 4.89 | 44,697 |
| Biggest Roman Empire Countries | 0 | - | 4.82 | 73,618 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 61,256 |
| Countries of Asia in 1900 | 0 | - | 4.43 | 47,755 |
| Biggest British Empire Countries | 0 | - | 4.43 | 55,367 |
| Biggest Spanish Empire Countries | 0 | - | 4.79 | 80,595 |
| Soviet Union Country Quiz | 0 | - | 4.78 | 56,195 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.97 | 141,875 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 75,736 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 86,706 |
| Flags of the Countries that Start with A | 0 | - | 4.93 | 89,971 |
| Flags of the Countries that Start with C | 0 | - | 4.94 | 99,059 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,297 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,095 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,195 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,743 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 98,133 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,115 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.52 | 43,188 |
| Flags of the Countries that Start with I | 0 | - | 4.95 | 115,979 |
| Most-Visited Countries by Popes | 0 | - | 4.44 | 42,751 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.96 | 111,875 |
| Countries that Start with C - Shape Quiz | 0 | - | 4.71 | 61,282 |
| Countries that Start with I - Shape Quiz | 0 | - | 4.91 | 84,627 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 85,543 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,104 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 39,850 |
| 2017 News Stories - Name the Country | 0 | - | 4.47 | 23,896 |
| Countries that Start with N - Shape Quiz | 0 | - | 4.92 | 61,652 |
| Countries that Start with P - Shape Quiz | 0 | - | 4.82 | 61,157 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,678 |
| Countries in Random Squares of the World Map | 0 | - | 4.99 | 246,513 |
| Country by Photo of its Leader #1 | 0 | - | 4.73 | 80,357 |
| Countries of the World in 1900 | 0 | - | 4.87 | 51,985 |
| Random Flag to Country | 0 | - | 4.99 | 385,654 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.46 | 33,886 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 146,157 |
| Random Countries on the World Map | 0 | - | 5.00 | 1,088,941 |
| Countries in the Byzantine Empire | 0 | - | 4.88 | 49,082 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 238,886 |
| Countries of Europe in 1444 | 0 | - | 4.94 | 72,366 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 92,411 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 104,847 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,305 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 73,824 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,179 |
| Battle to Country | 0 | - | 4.89 | 30,442 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 66,729 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,585 |
| Countries by Former Name | 0 | - | 4.99 | 82,283 |
| Flags of Countries of the World in 1910 | 0 | - | 4.95 | 58,425 |
| Random European Countries on a Map | 0 | - | 4.98 | 211,600 |
| Random African Countries on a Map | 0 | - | 4.98 | 198,067 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,458,296 |
| Vatican City Country Quiz | 0 | - | 4.47 | 31,636 |
| World Map with 10 Random Extra Borders | 0 | - | 4.97 | 258,560 |
| Random Sequential Countries on the World Map | 0 | - | 5.00 | 378,504 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.43 | 19,515 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.89 | 36,508 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 58,230 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.73 | 28,314 |
