| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,102,489 |
| Country Shape Quiz #1 | 0 | - | 4.91 | 735,069 |
| Country Shape Quiz #2 | 0 | - | 4.94 | 343,357 |
| Country Shape Quiz #3 | 0 | - | 4.94 | 245,858 |
| Country Shape Quiz #4 | 0 | - | 4.90 | 179,797 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,165,599 |
| Biggest Countries by Area | 0 | - | 4.99 | 827,369 |
| Countries with the Highest Life Expectancy | 0 | - | 4.84 | 163,664 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.95 | 151,599 |
| Spanish-Speaking Countries Quiz | 0 | - | 4.91 | 295,020 |
| Island Countries Quiz | 0 | - | 4.99 | 576,166 |
| Northernmost Countries Quiz | 0 | - | 4.98 | 293,793 |
| Southernmost Countries of the World | 0 | - | 4.99 | 181,904 |
| Majority Muslim Countries | 0 | - | 4.96 | 281,216 |
| Countries with the Most Borders | 0 | - | 4.96 | 317,507 |
| Countries with the Longest Coastlines | 0 | - | 4.85 | 352,417 |
| Countries That Border Russia | 0 | - | 4.98 | 367,494 |
| Countries and Languages Quiz | 0 | - | 4.86 | 215,301 |
| Communist Countries in History | 0 | - | 4.47 | 382,652 |
| Countries with the Most Billionaires | 0 | - | 4.93 | 255,164 |
| Islands by Country #1 | 0 | - | 4.86 | 149,239 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 286,314 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 172,279 |
| 2010 Year in Review | 0 | - | 3.90 | 46,902 |
| Countries by Borders #1 | 0 | - | 5.00 | 154,113 |
| Commonwealth of Nations Countries | 0 | - | 4.92 | 205,003 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 306,255 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 300,652 |
| One Border Countries | 0 | - | 4.98 | 358,372 |
| 2011 Year in Review | 0 | - | 4.12 | 39,145 |
| NATO Countries Quiz | 0 | - | 4.97 | 201,543 |
| EU Countries Quiz | 0 | - | 4.99 | 206,717 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,462,803 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,248,509 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 131,018 |
| Countries by Independence Day Quiz | 0 | - | 4.48 | 41,869 |
| Countries that Start with A | 0 | - | 4.96 | 1,626,712 |
| Countries that Start with B | 0 | - | 4.94 | 1,764,245 |
| Countries that Start with C | 0 | - | 4.95 | 1,397,946 |
| Countries that Start with D | 0 | - | 4.96 | 462,531 |
| Countries that Start with E | 0 | - | 4.93 | 1,030,885 |
| Countries that Start with G | 0 | - | 4.95 | 1,128,177 |
| Countries that Start with H | 0 | - | 4.92 | 389,692 |
| Countries that Start with I | 0 | - | 4.90 | 975,160 |
| Countries that Start with J | 0 | - | 4.96 | 392,973 |
| Countries that Start with K | 0 | - | 4.95 | 570,756 |
| Countries that Start with L | 0 | - | 4.98 | 811,975 |
| Countries that Start with N | 0 | - | 4.90 | 833,242 |
| Countries that Start with P | 0 | - | 4.94 | 920,893 |
| Countries that Start with R | 0 | - | 4.41 | 299,124 |
| Countries that Start with S | 0 | - | 4.97 | 1,354,291 |
| Countries that Start with T | 0 | - | 4.89 | 757,687 |
| Countries that Start with U | 0 | - | 4.97 | 683,618 |
| Countries that Start with V | 0 | - | 4.97 | 455,442 |
| Countries that Start with F | 0 | - | 4.74 | 423,020 |
| Countries that Start with M | 0 | - | 4.95 | 1,058,737 |
| Countries that Border China | 0 | - | 4.97 | 211,817 |
| Countries in World War II | 0 | - | 4.47 | 679,004 |
| Countries that Produce the Most Wine | 0 | - | 4.88 | 164,770 |
| Countries in World War I | 0 | - | 4.92 | 182,557 |
| Countries with Four Letters | 0 | - | 4.99 | 320,746 |
| Countries of Africa | 0 | - | 5.00 | 1,729,960 |
| Countries of South America | 0 | - | 5.00 | 621,643 |
| Countries of North America Quiz | 0 | - | 5.00 | 704,879 |
| Countries of Oceania | 0 | - | 5.00 | 711,120 |
| "Stan" Countries Quiz | 0 | - | 4.96 | 155,122 |
| Vietnam War Countries | 0 | - | 4.78 | 76,565 |
| Countries with the Most Military Troops | 0 | - | 4.93 | 206,005 |
| Countries Bordering France | 0 | - | 4.90 | 308,744 |
| Countries with Nuclear Weapons | 0 | - | 4.90 | 199,240 |
| Countries Bordering Germany | 0 | - | 4.99 | 291,813 |
| Countries Bordering China Since 1914 | 0 | - | 4.94 | 70,037 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 252,810 |
| Countries "Ruled" by King Charles III | 0 | - | 4.74 | 64,975 |
| Countries of the Soviet Union | 0 | - | 4.99 | 145,942 |
| Countries in their Native Language | 0 | - | 4.97 | 149,519 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 91,893 |
| Countries by Clue #1 | 0 | - | 4.89 | 195,645 |
| Countries with Five Letters Quiz | 0 | - | 4.92 | 192,148 |
| Countries with Six Letters Quiz | 0 | - | 4.93 | 157,703 |
| Independence from Whom | 0 | - | 4.99 | 152,742 |
| Countries with Z | 0 | - | 4.99 | 222,816 |
| Holy Roman Empire Countries | 0 | - | 4.56 | 37,439 |
| Political Movements by Country | 0 | - | 4.49 | 61,872 |
| "Land" Countries | 0 | - | 4.98 | 264,540 |
| European Countries by Clue | 0 | - | 4.94 | 154,275 |
| 2012 Year in Review | 0 | - | 3.96 | 43,420 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.94 | 206,572 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,182 |
| Who Controlled These Colonies? | 0 | - | 4.73 | 100,481 |
| Countries with the Longest Total Borders | 0 | - | 4.98 | 246,405 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 146,864 |
| Warsaw Pact Countries | 0 | - | 4.90 | 64,499 |
| Inventions by Country #1 | 0 | - | 4.43 | 41,764 |
| 2013 Year in Review | 0 | - | 4.28 | 37,377 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,276 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 156,201 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 181,342 |
| Historical City to Country | 0 | - | 4.81 | 66,312 |
| Countries of the Japanese Empire | 0 | - | 4.95 | 74,666 |
| Countries in the Ottoman Empire | 0 | - | 4.92 | 50,627 |
| Countries With the Most Languages | 0 | - | 4.90 | 150,133 |
| 2014 Year in Review | 0 | - | 4.32 | 27,741 |
| Countries Closest to Canada | 0 | - | 4.93 | 156,316 |
| Countries Closest to Spain | 0 | - | 4.96 | 170,106 |
| Countries Ending in "IA" | 0 | - | 4.99 | 150,035 |
| Countries Settled by Vikings | 0 | - | 4.92 | 91,694 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 342,008 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 193,767 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,319,989 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 128,814 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 162,837 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 168,507 |
| Former Countries | 0 | - | 4.52 | 100,289 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,392 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.94 | 150,315 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 172,802 |
| Guerrillas by Country | 0 | - | 4.42 | 34,835 |
| Country Chain | 0 | - | 4.92 | 156,492 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.83 | 995,692 |
| World Map without 12 Countries | 0 | - | 4.96 | 278,314 |
| 2015 Year in Review | 0 | - | 3.90 | 23,458 |
| Neutral European Countries of WWII | 0 | - | 4.95 | 110,545 |
| Every Country Shape | 0 | - | 4.99 | 312,732 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,873,774 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,258 |
| Countries with Megacities | 0 | - | 4.99 | 175,180 |
| Every European Country Shape | 0 | - | 4.94 | 152,287 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 165,018 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 169,894 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 167,970 |
| All Countries of the World by Area with Hints | 0 | - | 4.95 | 152,532 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,642,044 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.94 | 191,336 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 65,774 |
| One Country By Letter By Continent | 0 | - | 4.99 | 35,801 |
| Most Populous Countries by Year | 0 | - | 4.77 | 78,890 |
| Largest Countries with No Borders | 0 | - | 4.97 | 163,330 |
| Countries of Europe After World War II | 0 | - | 4.97 | 143,143 |
| Countries of Europe Before World War I | 0 | - | 5.00 | 112,016 |
| The Barack Obama Presidency | 0 | - | 4.10 | 21,035 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 171,229 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.88 | 175,897 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.96 | 187,672 |
| 2016 Year in Review | 0 | - | 3.93 | 30,400 |
| Most Recently-Settled Countries | 0 | - | 4.89 | 44,764 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.95 | 159,615 |
| Biggest Roman Empire Countries | 0 | - | 4.82 | 73,749 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 61,379 |
| Countries of Asia in 1900 | 0 | - | 4.43 | 47,864 |
| Biggest British Empire Countries | 0 | - | 4.43 | 55,457 |
| Biggest Spanish Empire Countries | 0 | - | 4.79 | 80,797 |
| Soviet Union Country Quiz | 0 | - | 4.78 | 56,349 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.98 | 142,227 |
| Flags of the Countries that Start with A | 0 | - | 4.93 | 90,209 |
| Quiz on the Year 1997 | 0 | - | 4.17 | 16,943 |
| Flags of the Countries that Start with C | 0 | - | 4.94 | 99,316 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,437 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,220 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,317 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,857 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 98,856 |
| Flags of the Countries that Start with I | 0 | - | 4.95 | 116,349 |
| Most-Visited Countries by Popes | 0 | - | 4.44 | 42,955 |
| Countries that Start with C - Shape Quiz | 0 | - | 4.71 | 61,552 |
| Countries that Start with I - Shape Quiz | 0 | - | 4.91 | 84,950 |
| 2017 News Stories - Name the Country | 0 | - | 4.48 | 23,964 |
| 2017 Year in Review | 0 | - | 4.41 | 27,243 |
| Quiz on the Year 1998 | 0 | - | 4.28 | 13,368 |
| Countries that Start with N - Shape Quiz | 0 | - | 4.92 | 61,894 |
| Countries that Start with P - Shape Quiz | 0 | - | 4.82 | 61,403 |
| Countries by Emojis | 0 | - | 4.99 | 158,049 |
| 17th Century A-Z | 0 | - | 4.45 | 21,246 |
| Countries in Random Squares of the World Map | 0 | - | 4.99 | 247,314 |
| Country by Photo of its Leader #1 | 0 | - | 4.73 | 80,546 |
| Countries of the World in 1900 | 0 | - | 4.87 | 52,223 |
| Random Flag to Country | 0 | - | 4.99 | 387,076 |
| Name a Valid Country #1 | 0 | - | 4.99 | 171,959 |
| 2018 News Stories - Name the Country | 0 | - | 4.40 | 19,917 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.46 | 33,960 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 146,547 |
| Name a Valid Country #2 | 0 | - | 4.97 | 150,516 |
| Name a Valid Country #3 | 0 | - | 4.98 | 161,654 |
| Random Countries on the World Map | 0 | - | 5.00 | 1,092,135 |
| Countries in the Byzantine Empire | 0 | - | 4.88 | 49,178 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 239,559 |
| Countries of Europe in 1444 | 0 | - | 4.94 | 72,654 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 174,063 |
| Name a Valid European Country #1 | 0 | - | 4.98 | 158,688 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 92,726 |
| Category Elimination - Countries #3 | 0 | - | 4.98 | 166,850 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 105,267 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 74,140 |
| Battle to Country | 0 | - | 4.89 | 30,527 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 66,903 |
| Countries by Former Name | 0 | - | 4.99 | 82,478 |
| Flags of Countries of the World in 1910 | 0 | - | 4.95 | 58,614 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 176,625 |
| Random European Countries on a Map | 0 | - | 4.98 | 212,299 |
| Random African Countries on a Map | 0 | - | 4.98 | 198,764 |
