| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,260,363 |
| Country Shape Quiz #1 | 0 | - | 4.91 | 737,633 |
| Country Shape Quiz #2 | 0 | - | 4.94 | 344,211 |
| Country Shape Quiz #3 | 0 | - | 4.94 | 246,416 |
| Country Shape Quiz #4 | 0 | - | 4.91 | 180,223 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,168,996 |
| Biggest Countries by Area | 0 | - | 4.99 | 829,847 |
| Countries with the Highest Life Expectancy | 0 | - | 4.84 | 163,924 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.95 | 151,905 |
| Spanish-Speaking Countries Quiz | 0 | - | 4.90 | 295,749 |
| Island Countries Quiz | 0 | - | 4.99 | 577,715 |
| Northernmost Countries Quiz | 0 | - | 4.98 | 294,613 |
| Southernmost Countries of the World | 0 | - | 4.99 | 182,255 |
| Majority Muslim Countries | 0 | - | 4.96 | 281,896 |
| Countries with the Most Borders | 0 | - | 4.96 | 318,390 |
| Countries with the Longest Coastlines | 0 | - | 4.85 | 353,101 |
| Countries That Border Russia | 0 | - | 4.98 | 368,700 |
| Countries and Languages Quiz | 0 | - | 4.86 | 215,736 |
| Communist Countries in History | 0 | - | 4.48 | 384,048 |
| Countries with the Most Billionaires | 0 | - | 4.93 | 255,842 |
| Islands by Country #1 | 0 | - | 4.86 | 149,575 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 287,295 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 172,605 |
| Countries by Borders #1 | 0 | - | 5.00 | 154,482 |
| Commonwealth of Nations Countries | 0 | - | 4.92 | 205,461 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 307,011 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 301,320 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 133,049 |
| Former Capitals Quiz | 0 | - | 4.74 | 54,534 |
| One Border Countries | 0 | - | 4.98 | 359,695 |
| NATO Countries Quiz | 0 | - | 4.97 | 202,070 |
| EU Countries Quiz | 0 | - | 4.99 | 207,187 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,480,501 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,256,051 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 131,578 |
| Countries by Independence Day Quiz | 0 | - | 4.48 | 41,952 |
| Countries that Start with A | 0 | - | 4.96 | 1,633,231 |
| Countries that Start with B | 0 | - | 4.94 | 1,770,818 |
| Countries that Start with C | 0 | - | 4.95 | 1,403,098 |
| Countries that Start with D | 0 | - | 4.96 | 465,136 |
| Countries that Start with E | 0 | - | 4.93 | 1,034,968 |
| Countries that Start with G | 0 | - | 4.95 | 1,132,701 |
| Countries that Start with H | 0 | - | 4.93 | 391,929 |
| Countries that Start with I | 0 | - | 4.91 | 978,666 |
| Countries that Start with J | 0 | - | 4.96 | 395,277 |
| Countries that Start with K | 0 | - | 4.95 | 573,694 |
| Countries that Start with L | 0 | - | 4.98 | 815,394 |
| Countries that Start with N | 0 | - | 4.90 | 836,712 |
| Countries that Start with P | 0 | - | 4.94 | 924,607 |
| Countries that Start with R | 0 | - | 4.42 | 300,938 |
| Countries that Start with S | 0 | - | 4.96 | 1,359,520 |
| Countries that Start with T | 0 | - | 4.89 | 760,700 |
| Countries that Start with U | 0 | - | 4.97 | 686,313 |
| Countries that Start with V | 0 | - | 4.97 | 457,272 |
| Countries that Start with F | 0 | - | 4.76 | 425,278 |
| Countries that Start with M | 0 | - | 4.96 | 1,062,759 |
| Countries that Border China | 0 | - | 4.97 | 212,352 |
| Top Crude Oil Producing Countries | 0 | - | 4.84 | 145,592 |
| Countries in World War II | 0 | - | 4.48 | 681,972 |
| Countries that Produce the Most Wine | 0 | - | 4.88 | 165,202 |
| Countries in World War I | 0 | - | 4.91 | 183,171 |
| Countries with Four Letters | 0 | - | 4.99 | 321,624 |
| Countries of Africa | 0 | - | 5.00 | 1,740,305 |
| Countries of South America | 0 | - | 5.00 | 625,637 |
| Countries of North America Quiz | 0 | - | 5.00 | 709,167 |
| Countries of Oceania | 0 | - | 5.00 | 715,448 |
| "Stan" Countries Quiz | 0 | - | 4.96 | 155,519 |
| Vietnam War Countries | 0 | - | 4.78 | 76,832 |
| Countries with the Most Military Troops | 0 | - | 4.93 | 206,673 |
| Countries Bordering France | 0 | - | 4.90 | 309,725 |
| Countries with Nuclear Weapons | 0 | - | 4.90 | 199,948 |
| Countries Bordering Germany | 0 | - | 4.99 | 293,136 |
| Countries Bordering China Since 1914 | 0 | - | 4.94 | 70,336 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 253,327 |
| Countries "Ruled" by King Charles III | 0 | - | 4.74 | 65,175 |
| Countries of the Soviet Union | 0 | - | 4.99 | 146,507 |
| Countries in their Native Language | 0 | - | 4.97 | 149,857 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 92,215 |
| Countries by Clue #1 | 0 | - | 4.89 | 196,051 |
| Countries with Five Letters Quiz | 0 | - | 4.92 | 192,549 |
| Countries with Six Letters Quiz | 0 | - | 4.93 | 158,055 |
| Independence from Whom | 0 | - | 4.99 | 153,129 |
| Countries with Z | 0 | - | 4.99 | 223,310 |
| Holy Roman Empire Countries | 0 | - | 4.58 | 37,602 |
| Political Movements by Country | 0 | - | 4.50 | 62,040 |
| "Land" Countries | 0 | - | 4.98 | 265,383 |
| European Countries by Clue | 0 | - | 4.94 | 154,647 |
| Countries with Letters Missing | 0 | - | 4.97 | 143,707 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.95 | 218,068 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,605 |
| Who Controlled These Colonies? | 0 | - | 4.73 | 100,745 |
| Countries with the Longest Total Borders | 0 | - | 4.98 | 247,116 |
| Former Countries by Capital | 0 | - | 4.41 | 97,475 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 147,243 |
| Warsaw Pact Countries | 0 | - | 4.90 | 64,710 |
| Inventions by Country #1 | 0 | - | 4.43 | 41,869 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,473 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 156,544 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 181,937 |
| Historical City to Country | 0 | - | 4.81 | 66,474 |
| Biggest Countries by Area A-Z | 0 | - | 4.94 | 148,399 |
| Countries of the Japanese Empire | 0 | - | 4.95 | 75,029 |
| Countries in the Ottoman Empire | 0 | - | 4.93 | 50,797 |
| Countries With the Most Languages | 0 | - | 4.90 | 150,920 |
| Countries Closest to Canada | 0 | - | 4.93 | 157,038 |
| Countries Closest to Italy | 0 | - | 4.97 | 148,672 |
| Countries Closest to Spain | 0 | - | 4.96 | 170,872 |
| Countries Ending in "IA" | 0 | - | 4.99 | 150,542 |
| Countries Settled by Vikings | 0 | - | 4.92 | 91,911 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 343,154 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 194,312 |
| WWII Geography | 0 | - | 4.74 | 89,049 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,336,822 |
| Countries That End in Y | 0 | - | 4.89 | 148,619 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 129,114 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 163,311 |
| Countries Based on First Two Letters #1 | 0 | - | 4.98 | 144,058 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 169,002 |
| Former Countries | 0 | - | 4.53 | 100,512 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,915 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.94 | 150,808 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 173,260 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 143,923 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 143,902 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,328 |
| Country Chain | 0 | - | 4.92 | 156,870 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.82 | 999,046 |
| World Map without 12 Countries | 0 | - | 4.96 | 278,869 |
| Neutral European Countries of WWII | 0 | - | 4.95 | 111,029 |
| Every Country Shape | 0 | - | 4.99 | 314,333 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,885,783 |
| Five Biggest Economies by Continent | 0 | - | 4.97 | 144,518 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,905 |
| Countries with Megacities | 0 | - | 4.99 | 176,266 |
| Every European Country Shape | 0 | - | 4.94 | 152,792 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 165,432 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 170,632 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 168,570 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 143,199 |
| All Countries of the World by Area with Hints | 0 | - | 4.95 | 153,561 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,653,148 |
| Countries of the Middle East | 0 | - | 4.96 | 148,866 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.94 | 214,430 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 66,137 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.96 | 143,725 |
| One Country By Letter By Continent | 0 | - | 4.99 | 36,773 |
| Most Populous Countries by Year | 0 | - | 4.78 | 79,398 |
| Largest Countries with No Borders | 0 | - | 4.97 | 163,734 |
| Countries of Europe After World War II | 0 | - | 4.97 | 143,705 |
| Countries of Europe Before World War I | 0 | - | 5.00 | 112,654 |
| Top 10 Coldest European Countries | 0 | - | 4.93 | 143,994 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 171,823 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.88 | 176,522 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.96 | 188,726 |
| Most Recently-Settled Countries | 0 | - | 4.89 | 44,889 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.95 | 160,182 |
| Biggest Roman Empire Countries | 0 | - | 4.82 | 73,989 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 61,556 |
| Countries of Asia in 1900 | 0 | - | 4.42 | 48,008 |
| Biggest British Empire Countries | 0 | - | 4.43 | 55,574 |
| Biggest Spanish Empire Countries | 0 | - | 4.79 | 81,083 |
| Soviet Union Country Quiz | 0 | - | 4.79 | 56,595 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.98 | 142,743 |
| Flags of the Countries that Start with A | 0 | - | 4.93 | 90,603 |
| Countries Most Affected by the 2004 Tsunami | 0 | - | 3.95 | 18,168 |
| Flags of the Countries that Start with C | 0 | - | 4.94 | 99,782 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,609 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,396 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,464 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 48,013 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 99,222 |
| Flags of the Countries that Start with I | 0 | - | 4.95 | 116,815 |
| Most-Visited Countries by Popes | 0 | - | 4.44 | 43,131 |
| Countries that Start with C - Shape Quiz | 0 | - | 4.72 | 61,936 |
| Countries that Start with I - Shape Quiz | 0 | - | 4.91 | 85,387 |
| 2017 News Stories - Name the Country | 0 | - | 4.48 | 24,045 |
| Countries that Start with N - Shape Quiz | 0 | - | 4.92 | 62,199 |
| Countries that Start with P - Shape Quiz | 0 | - | 4.82 | 61,739 |
| Countries by Emojis | 0 | - | 4.99 | 158,820 |
| Countries in Random Squares of the World Map | 0 | - | 4.99 | 248,727 |
| Country by Photo of its Leader #1 | 0 | - | 4.74 | 80,815 |
| Roman Provinces on a Map | 0 | - | 4.73 | 25,765 |
| Countries of the World in 1900 | 0 | - | 4.87 | 52,639 |
| Random Flag to Country | 0 | - | 4.99 | 389,071 |
| Name a Valid Country #1 | 0 | - | 4.99 | 172,877 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.46 | 34,098 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 147,262 |
| Name a Valid Country #2 | 0 | - | 4.97 | 151,579 |
| Name a Valid Country #3 | 0 | - | 4.98 | 162,341 |
| Random Countries on the World Map | 0 | - | 5.00 | 1,097,936 |
| Countries of the German Empire | 0 | - | 4.36 | 26,708 |
| Countries in the Byzantine Empire | 0 | - | 4.88 | 49,382 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 240,728 |
| Countries of Europe in 1444 | 0 | - | 4.94 | 73,070 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 174,973 |
| Name a Valid European Country #1 | 0 | - | 4.98 | 159,342 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 93,269 |
| Category Elimination - Countries #3 | 0 | - | 4.98 | 167,982 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 105,941 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 74,549 |
