| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,112,086 |
| Country Shape Quiz #1 | 0 | - | 4.91 | 735,235 |
| Country Shape Quiz #2 | 0 | - | 4.94 | 343,411 |
| Country Shape Quiz #3 | 0 | - | 4.94 | 245,896 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,165,801 |
| Biggest Countries by Area | 0 | - | 4.99 | 827,506 |
| Spanish-Speaking Countries Quiz | 0 | - | 4.91 | 295,061 |
| Island Countries Quiz | 0 | - | 4.99 | 576,271 |
| Northernmost Countries Quiz | 0 | - | 4.98 | 293,830 |
| Southernmost Countries of the World | 0 | - | 4.99 | 181,917 |
| Majority Muslim Countries | 0 | - | 4.96 | 281,255 |
| Countries with the Most Borders | 0 | - | 4.96 | 317,558 |
| Countries with the Longest Coastlines | 0 | - | 4.85 | 352,451 |
| Countries That Border Russia | 0 | - | 4.98 | 367,555 |
| Countries and Languages Quiz | 0 | - | 4.86 | 215,322 |
| Communist Countries in History | 0 | - | 4.47 | 382,741 |
| Countries with the Most Billionaires | 0 | - | 4.93 | 255,202 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 286,348 |
| Commonwealth of Nations Countries | 0 | - | 4.92 | 205,031 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 306,287 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 300,702 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 132,725 |
| One Border Countries | 0 | - | 4.98 | 358,451 |
| NATO Countries Quiz | 0 | - | 4.97 | 201,573 |
| EU Countries Quiz | 0 | - | 4.99 | 206,746 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,463,861 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,248,996 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 131,030 |
| Countries by Independence Day Quiz | 0 | - | 4.48 | 41,873 |
| Countries that Start with A | 0 | - | 4.96 | 1,627,108 |
| Countries that Start with B | 0 | - | 4.94 | 1,764,641 |
| Countries that Start with C | 0 | - | 4.95 | 1,398,276 |
| Countries that Start with D | 0 | - | 4.96 | 462,688 |
| Countries that Start with E | 0 | - | 4.93 | 1,031,139 |
| Countries that Start with G | 0 | - | 4.95 | 1,128,429 |
| Countries that Start with H | 0 | - | 4.92 | 389,825 |
| Countries that Start with I | 0 | - | 4.90 | 975,375 |
| Countries that Start with J | 0 | - | 4.96 | 393,117 |
| Countries that Start with K | 0 | - | 4.95 | 570,933 |
| Countries that Start with L | 0 | - | 4.98 | 812,184 |
| Countries that Start with N | 0 | - | 4.90 | 833,455 |
| Countries that Start with P | 0 | - | 4.94 | 921,148 |
| Countries that Start with R | 0 | - | 4.41 | 299,246 |
| Countries that Start with S | 0 | - | 4.97 | 1,354,597 |
| Countries that Start with T | 0 | - | 4.89 | 757,912 |
| Countries that Start with U | 0 | - | 4.97 | 683,808 |
| Countries that Start with V | 0 | - | 4.97 | 455,557 |
| Countries that Start with F | 0 | - | 4.76 | 423,167 |
| Countries that Start with M | 0 | - | 4.95 | 1,058,972 |
| Countries that Border China | 0 | - | 4.97 | 211,842 |
| Countries in World War II | 0 | - | 4.47 | 679,192 |
| Countries in World War I | 0 | - | 4.92 | 182,589 |
| Countries with Four Letters | 0 | - | 4.99 | 320,787 |
| Countries of Africa | 0 | - | 5.00 | 1,730,618 |
| Countries of South America | 0 | - | 5.00 | 621,926 |
| Countries of North America Quiz | 0 | - | 5.00 | 705,187 |
| Countries of Oceania | 0 | - | 5.00 | 711,369 |
| Vietnam War Countries | 0 | - | 4.78 | 76,586 |
| Countries with the Most Military Troops | 0 | - | 4.93 | 206,032 |
| Countries Bordering France | 0 | - | 4.90 | 308,789 |
| Countries with Nuclear Weapons | 0 | - | 4.90 | 199,275 |
| Countries Bordering Germany | 0 | - | 4.99 | 291,875 |
| Countries Bordering China Since 1914 | 0 | - | 4.94 | 70,055 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,243 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 252,837 |
| Countries "Ruled" by King Charles III | 0 | - | 4.73 | 64,985 |
| Countries of the Soviet Union | 0 | - | 4.99 | 145,970 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 91,913 |
| Countries by Clue #1 | 0 | - | 4.89 | 195,669 |
| Countries with Five Letters Quiz | 0 | - | 4.92 | 192,170 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,473 |
| Independence from Whom | 0 | - | 4.99 | 152,767 |
| Countries with Z | 0 | - | 4.99 | 222,839 |
| Holy Roman Empire Countries | 0 | - | 4.56 | 37,448 |
| Political Movements by Country | 0 | - | 4.49 | 61,878 |
| "Land" Countries | 0 | - | 4.98 | 264,622 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,534 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.94 | 206,785 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,203 |
| Who Controlled These Colonies? | 0 | - | 4.73 | 100,496 |
| Countries with the Longest Total Borders | 0 | - | 4.98 | 246,450 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 146,887 |
| Biggest Cities in History | 0 | - | 4.49 | 70,438 |
| Warsaw Pact Countries | 0 | - | 4.90 | 64,514 |
| Inventions by Country #1 | 0 | - | 4.43 | 41,770 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,266 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,288 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 181,389 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,175 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,150 |
| Historical City to Country | 0 | - | 4.81 | 66,320 |
| Countries of the Japanese Empire | 0 | - | 4.95 | 74,685 |
| Countries in the Ottoman Empire | 0 | - | 4.92 | 50,636 |
| Countries Settled by Vikings | 0 | - | 4.92 | 91,706 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 342,071 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 193,797 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,321,036 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 128,826 |
| Biggest European Cities by Century | 0 | - | 4.96 | 104,988 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,659 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 71,887 |
| Former Countries | 0 | - | 4.52 | 100,298 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,182 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,426 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,671 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,517 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 56,877 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,109 |
| Guerrillas by Country | 0 | - | 4.42 | 34,839 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,574 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.83 | 995,868 |
| World Map without 12 Countries | 0 | - | 4.96 | 278,352 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,803 |
| Neutral European Countries of WWII | 0 | - | 4.95 | 110,583 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.56 | 68,282 |
| Every Country Shape | 0 | - | 4.99 | 312,831 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,874,400 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,304 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,302 |
| Countries with Megacities | 0 | - | 4.99 | 175,334 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,250 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 168,012 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 126,911 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 123,203 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,642,643 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.94 | 191,397 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,500 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 65,793 |
| One Country By Letter By Continent | 0 | - | 4.99 | 35,851 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,613 |
| Most Populous Countries in 1800 | 0 | - | 4.25 | 33,010 |
| Most Populous Countries by Year | 0 | - | 4.76 | 78,906 |
| Countries of Europe After World War II | 0 | - | 4.97 | 143,194 |
| Countries of Europe Before World War I | 0 | - | 5.00 | 112,066 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,503 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 71,951 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,498 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 124,811 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.96 | 187,750 |
| Most Recently-Settled Countries | 0 | - | 4.89 | 44,773 |
| Biggest Roman Empire Countries | 0 | - | 4.82 | 73,770 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 61,385 |
| Countries of Asia in 1900 | 0 | - | 4.43 | 47,879 |
| Biggest British Empire Countries | 0 | - | 4.43 | 55,467 |
| Biggest Spanish Empire Countries | 0 | - | 4.79 | 80,816 |
| Soviet Union Country Quiz | 0 | - | 4.78 | 56,362 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.98 | 142,261 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 75,891 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 86,924 |
| Flags of the Countries that Start with A | 0 | - | 4.93 | 90,244 |
| Flags of the Countries that Start with C | 0 | - | 4.94 | 99,342 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,444 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,228 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,330 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,870 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 98,880 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,214 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.52 | 43,289 |
| Flags of the Countries that Start with I | 0 | - | 4.95 | 116,373 |
| Most-Visited Countries by Popes | 0 | - | 4.44 | 42,970 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 112,142 |
| Countries that Start with C - Shape Quiz | 0 | - | 4.71 | 61,578 |
| Countries that Start with I - Shape Quiz | 0 | - | 4.91 | 84,986 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 85,948 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,291 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 39,936 |
| 2017 News Stories - Name the Country | 0 | - | 4.48 | 23,968 |
| Countries that Start with N - Shape Quiz | 0 | - | 4.92 | 61,917 |
| Countries that Start with P - Shape Quiz | 0 | - | 4.82 | 61,424 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,821 |
| Countries in Random Squares of the World Map | 0 | - | 4.99 | 247,375 |
| Country by Photo of its Leader #1 | 0 | - | 4.73 | 80,566 |
| Countries of the World in 1900 | 0 | - | 4.87 | 52,239 |
| Random Flag to Country | 0 | - | 4.99 | 387,189 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.46 | 33,970 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 146,593 |
| Random Countries on the World Map | 0 | - | 5.00 | 1,092,319 |
| Countries in the Byzantine Empire | 0 | - | 4.88 | 49,182 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 239,611 |
| Countries of Europe in 1444 | 0 | - | 4.94 | 72,671 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 92,761 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 105,307 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,437 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 74,167 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,340 |
| Battle to Country | 0 | - | 4.89 | 30,536 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 66,912 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,640 |
| Countries by Former Name | 0 | - | 4.99 | 82,492 |
| Flags of Countries of the World in 1910 | 0 | - | 4.95 | 58,636 |
| Random European Countries on a Map | 0 | - | 4.98 | 212,406 |
| Random African Countries on a Map | 0 | - | 4.98 | 198,821 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,488,335 |
| Vatican City Country Quiz | 0 | - | 4.47 | 31,768 |
| World Map with 10 Random Extra Borders | 0 | - | 4.97 | 259,996 |
| Random Sequential Countries on the World Map | 0 | - | 5.00 | 380,068 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.43 | 19,585 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.89 | 36,771 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 58,465 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.73 | 28,489 |
