| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,255,244 |
| Country Shape Quiz #1 | 0 | - | 4.91 | 737,562 |
| Country Shape Quiz #2 | 0 | - | 4.94 | 344,184 |
| Country Shape Quiz #3 | 0 | - | 4.94 | 246,398 |
| Country Shape Quiz #4 | 0 | - | 4.91 | 180,210 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,168,858 |
| Biggest Countries by Area | 0 | - | 4.99 | 829,759 |
| Countries with the Highest Life Expectancy | 0 | - | 4.84 | 163,914 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.95 | 151,899 |
| Spanish-Speaking Countries Quiz | 0 | - | 4.90 | 295,718 |
| Island Countries Quiz | 0 | - | 4.99 | 577,660 |
| Northernmost Countries Quiz | 0 | - | 4.98 | 294,599 |
| Southernmost Countries of the World | 0 | - | 4.99 | 182,247 |
| Majority Muslim Countries | 0 | - | 4.96 | 281,869 |
| Countries with the Most Borders | 0 | - | 4.96 | 318,357 |
| Countries with the Longest Coastlines | 0 | - | 4.85 | 353,069 |
| Countries That Border Russia | 0 | - | 4.98 | 368,663 |
| Countries and Languages Quiz | 0 | - | 4.86 | 215,726 |
| Communist Countries in History | 0 | - | 4.48 | 384,000 |
| Countries with the Most Billionaires | 0 | - | 4.93 | 255,830 |
| Islands by Country #1 | 0 | - | 4.86 | 149,557 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 287,276 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 172,592 |
| 2010 Year in Review | 0 | - | 3.90 | 46,935 |
| Countries by Borders #1 | 0 | - | 5.00 | 154,474 |
| Commonwealth of Nations Countries | 0 | - | 4.92 | 205,450 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 306,973 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 301,297 |
| One Border Countries | 0 | - | 4.98 | 359,669 |
| 2011 Year in Review | 0 | - | 4.12 | 39,193 |
| NATO Countries Quiz | 0 | - | 4.97 | 202,059 |
| EU Countries Quiz | 0 | - | 4.99 | 207,167 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,479,899 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,255,856 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 131,565 |
| Countries by Independence Day Quiz | 0 | - | 4.48 | 41,950 |
| Countries that Start with A | 0 | - | 4.96 | 1,632,990 |
| Countries that Start with B | 0 | - | 4.94 | 1,770,557 |
| Countries that Start with C | 0 | - | 4.95 | 1,402,884 |
| Countries that Start with D | 0 | - | 4.96 | 465,032 |
| Countries that Start with E | 0 | - | 4.93 | 1,034,800 |
| Countries that Start with G | 0 | - | 4.95 | 1,132,449 |
| Countries that Start with H | 0 | - | 4.93 | 391,836 |
| Countries that Start with I | 0 | - | 4.91 | 978,530 |
| Countries that Start with J | 0 | - | 4.96 | 395,185 |
| Countries that Start with K | 0 | - | 4.95 | 573,558 |
| Countries that Start with L | 0 | - | 4.98 | 815,247 |
| Countries that Start with N | 0 | - | 4.90 | 836,491 |
| Countries that Start with P | 0 | - | 4.94 | 924,460 |
| Countries that Start with R | 0 | - | 4.42 | 300,857 |
| Countries that Start with S | 0 | - | 4.96 | 1,359,324 |
| Countries that Start with T | 0 | - | 4.89 | 760,587 |
| Countries that Start with U | 0 | - | 4.97 | 686,220 |
| Countries that Start with V | 0 | - | 4.97 | 457,194 |
| Countries that Start with F | 0 | - | 4.76 | 425,186 |
| Countries that Start with M | 0 | - | 4.96 | 1,062,596 |
| Countries that Border China | 0 | - | 4.97 | 212,334 |
| Countries in World War II | 0 | - | 4.48 | 681,895 |
| Countries that Produce the Most Wine | 0 | - | 4.88 | 165,193 |
| Countries in World War I | 0 | - | 4.91 | 183,158 |
| Countries with Four Letters | 0 | - | 4.99 | 321,599 |
| Countries of Africa | 0 | - | 5.00 | 1,739,992 |
| Countries of South America | 0 | - | 5.00 | 625,540 |
| Countries of North America Quiz | 0 | - | 5.00 | 709,037 |
| Countries of Oceania | 0 | - | 5.00 | 715,352 |
| "Stan" Countries Quiz | 0 | - | 4.96 | 155,511 |
| Vietnam War Countries | 0 | - | 4.78 | 76,816 |
| Countries with the Most Military Troops | 0 | - | 4.93 | 206,661 |
| Countries Bordering France | 0 | - | 4.90 | 309,688 |
| Countries with Nuclear Weapons | 0 | - | 4.90 | 199,934 |
| Countries Bordering Germany | 0 | - | 4.99 | 293,096 |
| Countries Bordering China Since 1914 | 0 | - | 4.94 | 70,326 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 253,308 |
| Countries "Ruled" by King Charles III | 0 | - | 4.74 | 65,166 |
| Countries of the Soviet Union | 0 | - | 4.99 | 146,484 |
| Countries in their Native Language | 0 | - | 4.97 | 149,845 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 92,200 |
| Countries by Clue #1 | 0 | - | 4.89 | 196,039 |
| Countries with Five Letters Quiz | 0 | - | 4.92 | 192,532 |
| Countries with Six Letters Quiz | 0 | - | 4.93 | 158,042 |
| Independence from Whom | 0 | - | 4.99 | 153,111 |
| Countries with Z | 0 | - | 4.99 | 223,291 |
| Holy Roman Empire Countries | 0 | - | 4.58 | 37,599 |
| Political Movements by Country | 0 | - | 4.50 | 62,034 |
| "Land" Countries | 0 | - | 4.98 | 265,364 |
| European Countries by Clue | 0 | - | 4.94 | 154,618 |
| 2012 Year in Review | 0 | - | 3.96 | 43,451 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.95 | 218,034 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,590 |
| Who Controlled These Colonies? | 0 | - | 4.73 | 100,739 |
| Countries with the Longest Total Borders | 0 | - | 4.98 | 247,096 |
| Former Countries by Capital | 0 | - | 4.41 | 97,468 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 147,234 |
| Warsaw Pact Countries | 0 | - | 4.90 | 64,698 |
| Inventions by Country #1 | 0 | - | 4.43 | 41,868 |
| 2013 Year in Review | 0 | - | 4.28 | 37,436 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,467 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 156,534 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 181,916 |
| Historical City to Country | 0 | - | 4.81 | 66,468 |
| Countries of the Japanese Empire | 0 | - | 4.95 | 75,019 |
| Countries in the Ottoman Empire | 0 | - | 4.93 | 50,795 |
| Countries With the Most Languages | 0 | - | 4.90 | 150,908 |
| 2014 Year in Review | 0 | - | 4.32 | 27,814 |
| Countries Closest to Canada | 0 | - | 4.93 | 157,021 |
| Countries Closest to Spain | 0 | - | 4.96 | 170,857 |
| Countries Ending in "IA" | 0 | - | 4.99 | 150,516 |
| Countries Settled by Vikings | 0 | - | 4.92 | 91,907 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 343,122 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 194,301 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,336,306 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 129,100 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 163,301 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 168,990 |
| Former Countries | 0 | - | 4.53 | 100,511 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,896 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.94 | 150,788 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 173,245 |
| Country Chain | 0 | - | 4.92 | 156,857 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.82 | 998,944 |
| World Map without 12 Countries | 0 | - | 4.96 | 278,848 |
| 2015 Year in Review | 0 | - | 3.90 | 23,487 |
| Neutral European Countries of WWII | 0 | - | 4.95 | 111,018 |
| Every Country Shape | 0 | - | 4.99 | 314,293 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,885,460 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,878 |
| Countries with Megacities | 0 | - | 4.99 | 176,242 |
| Every European Country Shape | 0 | - | 4.94 | 152,782 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 165,418 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 170,598 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 168,551 |
| All Countries of the World by Area with Hints | 0 | - | 4.95 | 153,519 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,652,841 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.94 | 214,355 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 66,133 |
| One Country By Letter By Continent | 0 | - | 4.99 | 36,740 |
| Most Populous Countries by Year | 0 | - | 4.78 | 79,383 |
| Largest Countries with No Borders | 0 | - | 4.97 | 163,724 |
| Countries of Europe After World War II | 0 | - | 4.97 | 143,691 |
| Countries of Europe Before World War I | 0 | - | 5.00 | 112,636 |
| The Barack Obama Presidency | 0 | - | 4.10 | 21,069 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 171,800 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.88 | 176,508 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.96 | 188,696 |
| 2016 Year in Review | 0 | - | 3.93 | 30,437 |
| Most Recently-Settled Countries | 0 | - | 4.89 | 44,885 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.95 | 160,168 |
| Biggest Roman Empire Countries | 0 | - | 4.82 | 73,983 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 61,554 |
| Countries of Asia in 1900 | 0 | - | 4.42 | 48,004 |
| Biggest British Empire Countries | 0 | - | 4.43 | 55,572 |
| Biggest Spanish Empire Countries | 0 | - | 4.79 | 81,070 |
| Soviet Union Country Quiz | 0 | - | 4.79 | 56,586 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.98 | 142,727 |
| Flags of the Countries that Start with A | 0 | - | 4.93 | 90,595 |
| Quiz on the Year 1997 | 0 | - | 4.17 | 16,974 |
| Flags of the Countries that Start with C | 0 | - | 4.94 | 99,766 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,603 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,388 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,454 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 48,008 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 99,213 |
| Flags of the Countries that Start with I | 0 | - | 4.95 | 116,806 |
| Most-Visited Countries by Popes | 0 | - | 4.44 | 43,126 |
| Countries that Start with C - Shape Quiz | 0 | - | 4.72 | 61,918 |
| Countries that Start with I - Shape Quiz | 0 | - | 4.91 | 85,372 |
| 2017 News Stories - Name the Country | 0 | - | 4.48 | 24,042 |
| 2017 Year in Review | 0 | - | 4.41 | 27,296 |
| Quiz on the Year 1998 | 0 | - | 4.28 | 13,404 |
| Countries that Start with N - Shape Quiz | 0 | - | 4.92 | 62,191 |
| Countries that Start with P - Shape Quiz | 0 | - | 4.82 | 61,725 |
| Countries by Emojis | 0 | - | 4.99 | 158,766 |
| 17th Century A-Z | 0 | - | 4.45 | 21,316 |
| Countries in Random Squares of the World Map | 0 | - | 4.99 | 248,702 |
| Country by Photo of its Leader #1 | 0 | - | 4.74 | 80,806 |
| Countries of the World in 1900 | 0 | - | 4.87 | 52,625 |
| Random Flag to Country | 0 | - | 4.99 | 389,027 |
| Name a Valid Country #1 | 0 | - | 4.99 | 172,857 |
| 2018 News Stories - Name the Country | 0 | - | 4.40 | 19,987 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.46 | 34,094 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 147,239 |
| Name a Valid Country #2 | 0 | - | 4.97 | 151,566 |
| Name a Valid Country #3 | 0 | - | 4.98 | 162,326 |
| Random Countries on the World Map | 0 | - | 5.00 | 1,097,789 |
| Countries in the Byzantine Empire | 0 | - | 4.88 | 49,375 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 240,687 |
| Countries of Europe in 1444 | 0 | - | 4.94 | 73,057 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 174,941 |
| Name a Valid European Country #1 | 0 | - | 4.98 | 159,329 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 93,256 |
| Category Elimination - Countries #3 | 0 | - | 4.98 | 167,949 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 105,921 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 74,534 |
| Battle to Country | 0 | - | 4.89 | 30,640 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 67,107 |
| Countries by Former Name | 0 | - | 4.98 | 82,770 |
| Flags of Countries of the World in 1910 | 0 | - | 4.95 | 58,898 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 177,162 |
| Random European Countries on a Map | 0 | - | 4.98 | 213,204 |
| Random African Countries on a Map | 0 | - | 4.98 | 199,569 |
