| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,298,072 |
| Country Shape Quiz #1 | 0 | - | 4.91 | 738,171 |
| Country Shape Quiz #2 | 0 | - | 4.94 | 344,383 |
| Country Shape Quiz #3 | 0 | - | 4.94 | 246,532 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,169,623 |
| Biggest Countries by Area | 0 | - | 4.99 | 830,350 |
| Spanish-Speaking Countries Quiz | 0 | - | 4.90 | 295,914 |
| Island Countries Quiz | 0 | - | 4.99 | 578,018 |
| Northernmost Countries Quiz | 0 | - | 4.98 | 294,725 |
| Southernmost Countries of the World | 0 | - | 4.99 | 182,303 |
| Majority Muslim Countries | 0 | - | 4.96 | 282,063 |
| Countries with the Most Borders | 0 | - | 4.96 | 318,536 |
| Countries with the Longest Coastlines | 0 | - | 4.85 | 353,264 |
| Countries That Border Russia | 0 | - | 4.98 | 368,948 |
| Countries and Languages Quiz | 0 | - | 4.86 | 215,832 |
| Communist Countries in History | 0 | - | 4.48 | 384,332 |
| Countries with the Most Billionaires | 0 | - | 4.93 | 255,938 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 287,419 |
| Commonwealth of Nations Countries | 0 | - | 4.92 | 205,544 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 307,142 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 301,461 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 133,108 |
| One Border Countries | 0 | - | 4.98 | 359,937 |
| NATO Countries Quiz | 0 | - | 4.97 | 202,186 |
| EU Countries Quiz | 0 | - | 4.99 | 207,313 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,484,384 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,257,873 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 131,638 |
| Countries by Independence Day Quiz | 0 | - | 4.48 | 41,959 |
| Countries that Start with A | 0 | - | 4.96 | 1,634,581 |
| Countries that Start with B | 0 | - | 4.94 | 1,772,127 |
| Countries that Start with C | 0 | - | 4.95 | 1,404,147 |
| Countries that Start with D | 0 | - | 4.97 | 465,701 |
| Countries that Start with E | 0 | - | 4.93 | 1,035,810 |
| Countries that Start with G | 0 | - | 4.95 | 1,133,661 |
| Countries that Start with H | 0 | - | 4.93 | 392,428 |
| Countries that Start with I | 0 | - | 4.91 | 979,384 |
| Countries that Start with J | 0 | - | 4.96 | 395,749 |
| Countries that Start with K | 0 | - | 4.95 | 574,308 |
| Countries that Start with L | 0 | - | 4.98 | 816,057 |
| Countries that Start with N | 0 | - | 4.90 | 837,534 |
| Countries that Start with P | 0 | - | 4.94 | 925,392 |
| Countries that Start with R | 0 | - | 4.42 | 301,309 |
| Countries that Start with S | 0 | - | 4.96 | 1,360,668 |
| Countries that Start with T | 0 | - | 4.89 | 761,291 |
| Countries that Start with U | 0 | - | 4.97 | 686,870 |
| Countries that Start with V | 0 | - | 4.97 | 457,647 |
| Countries that Start with F | 0 | - | 4.77 | 425,776 |
| Countries that Start with M | 0 | - | 4.95 | 1,063,562 |
| Countries that Border China | 0 | - | 4.97 | 212,475 |
| Countries in World War II | 0 | - | 4.48 | 682,600 |
| Countries in World War I | 0 | - | 4.91 | 183,312 |
| Countries with Four Letters | 0 | - | 4.99 | 321,850 |
| Countries of Africa | 0 | - | 5.00 | 1,742,439 |
| Countries of South America | 0 | - | 5.00 | 626,517 |
| Countries of North America Quiz | 0 | - | 5.00 | 710,107 |
| Countries of Oceania | 0 | - | 5.00 | 716,469 |
| Vietnam War Countries | 0 | - | 4.78 | 76,881 |
| Countries with the Most Military Troops | 0 | - | 4.93 | 206,766 |
| Countries Bordering France | 0 | - | 4.90 | 309,905 |
| Countries with Nuclear Weapons | 0 | - | 4.90 | 200,044 |
| Countries Bordering Germany | 0 | - | 4.99 | 293,312 |
| Countries Bordering China Since 1914 | 0 | - | 4.94 | 70,388 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,573 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 253,442 |
| Countries "Ruled" by King Charles III | 0 | - | 4.74 | 65,221 |
| Countries of the Soviet Union | 0 | - | 4.99 | 146,638 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 92,261 |
| Countries by Clue #1 | 0 | - | 4.89 | 196,167 |
| Countries with Five Letters Quiz | 0 | - | 4.92 | 192,645 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 127,033 |
| Independence from Whom | 0 | - | 4.99 | 153,212 |
| Countries with Z | 0 | - | 4.99 | 223,400 |
| Holy Roman Empire Countries | 0 | - | 4.58 | 37,636 |
| Political Movements by Country | 0 | - | 4.50 | 62,065 |
| "Land" Countries | 0 | - | 4.98 | 265,533 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,956 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.95 | 218,288 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,682 |
| Who Controlled These Colonies? | 0 | - | 4.73 | 100,796 |
| Countries with the Longest Total Borders | 0 | - | 4.98 | 247,276 |
| Former Countries by Capital | 0 | - | 4.41 | 97,501 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 147,306 |
| Biggest Cities in History | 0 | - | 4.47 | 70,789 |
| Warsaw Pact Countries | 0 | - | 4.90 | 64,751 |
| Inventions by Country #1 | 0 | - | 4.43 | 41,885 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,489 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,508 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 182,060 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,319 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,298 |
| Historical City to Country | 0 | - | 4.81 | 66,516 |
| Countries of the Japanese Empire | 0 | - | 4.95 | 75,081 |
| Countries in the Ottoman Empire | 0 | - | 4.93 | 50,841 |
| Countries Settled by Vikings | 0 | - | 4.92 | 91,958 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 343,371 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 194,425 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,340,461 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 129,177 |
| Biggest European Cities by Century | 0 | - | 4.96 | 105,372 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,926 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 72,154 |
| Former Countries | 0 | - | 4.53 | 100,559 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,498 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 225,057 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,891 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,771 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 57,104 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,380 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,766 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.82 | 999,799 |
| World Map without 12 Countries | 0 | - | 4.96 | 278,978 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,907 |
| Neutral European Countries of WWII | 0 | - | 4.95 | 111,098 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.57 | 68,488 |
| Every Country Shape | 0 | - | 4.99 | 314,601 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,888,060 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,436 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 218,053 |
| Countries with Megacities | 0 | - | 4.99 | 176,394 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,683 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 168,699 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 127,593 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 123,706 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,655,535 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.94 | 215,066 |
| Biggest World Cities in 1850 | 0 | - | 4.53 | 47,671 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 66,219 |
| One Country By Letter By Continent | 0 | - | 4.99 | 37,017 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 38,778 |
| Most Populous Countries in 1800 | 0 | - | 4.25 | 33,150 |
| Most Populous Countries by Year | 0 | - | 4.78 | 79,453 |
| Countries of Europe After World War II | 0 | - | 4.97 | 143,836 |
| Countries of Europe Before World War I | 0 | - | 5.00 | 112,762 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,798 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 72,224 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,823 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 125,157 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.96 | 188,976 |
| Most Recently-Settled Countries | 0 | - | 4.90 | 44,912 |
| Biggest Roman Empire Countries | 0 | - | 4.82 | 74,028 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 61,622 |
| Countries of Asia in 1900 | 0 | - | 4.42 | 48,042 |
| Biggest British Empire Countries | 0 | - | 4.43 | 55,607 |
| Biggest Spanish Empire Countries | 0 | - | 4.79 | 81,145 |
| Soviet Union Country Quiz | 0 | - | 4.79 | 56,648 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.98 | 142,862 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 76,155 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 87,242 |
| Flags of the Countries that Start with A | 0 | - | 4.93 | 90,681 |
| Flags of the Countries that Start with C | 0 | - | 4.94 | 99,859 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,644 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,424 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,499 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 48,057 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 99,278 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,355 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.53 | 43,444 |
| Flags of the Countries that Start with I | 0 | - | 4.95 | 116,898 |
| Most-Visited Countries by Popes | 0 | - | 4.44 | 43,168 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 112,519 |
| Countries that Start with C - Shape Quiz | 0 | - | 4.72 | 61,988 |
| Countries that Start with I - Shape Quiz | 0 | - | 4.91 | 85,458 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 86,266 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,569 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 40,214 |
| 2017 News Stories - Name the Country | 0 | - | 4.48 | 24,066 |
| Countries that Start with N - Shape Quiz | 0 | - | 4.92 | 62,267 |
| Countries that Start with P - Shape Quiz | 0 | - | 4.82 | 61,797 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 45,046 |
| Countries in Random Squares of the World Map | 0 | - | 4.99 | 249,106 |
| Country by Photo of its Leader #1 | 0 | - | 4.74 | 80,871 |
| Countries of the World in 1900 | 0 | - | 4.87 | 52,712 |
| Random Flag to Country | 0 | - | 4.99 | 389,439 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.46 | 34,122 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 147,405 |
| Random Countries on the World Map | 0 | - | 5.00 | 1,098,984 |
| Countries in the Byzantine Empire | 0 | - | 4.88 | 49,423 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 240,981 |
| Countries of Europe in 1444 | 0 | - | 4.94 | 73,152 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 93,346 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 106,091 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,635 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 74,621 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,808 |
| Battle to Country | 0 | - | 4.89 | 30,656 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 67,167 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,737 |
| Countries by Former Name | 0 | - | 4.98 | 82,833 |
| Flags of Countries of the World in 1910 | 0 | - | 4.95 | 58,971 |
| Random European Countries on a Map | 0 | - | 4.98 | 213,407 |
| Random African Countries on a Map | 0 | - | 4.98 | 199,779 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,536,734 |
| Vatican City Country Quiz | 0 | - | 4.44 | 31,966 |
| World Map with 10 Random Extra Borders | 0 | - | 4.97 | 261,973 |
| Random Sequential Countries on the World Map | 0 | - | 5.00 | 381,987 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.43 | 19,666 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.89 | 37,119 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 58,921 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.74 | 28,737 |
