| Countries of the World Quiz | 0 | - | 5.00 | 47,452,668 |
| Landlocked Countries | 0 | - | 4.99 | 420,437 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,767,087 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,675 |
| Himalayan Countries | 0 | - | 4.95 | 138,062 |
| Andean Countries | 0 | - | 4.95 | 84,252 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,476 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,302 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,108 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,551 |
| Danube Countries | 0 | - | 4.97 | 71,825 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,775 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,224 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,955 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,396 |
| European Landlocked Countries | 0 | - | 4.99 | 146,956 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,364 |
| Countries with the Most Species | 0 | - | 4.99 | 103,082 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,526 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,497 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,657 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,439 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,112 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,499 |
| Countries in the Alps | 0 | - | 4.87 | 117,949 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,247 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,682 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,545 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,442 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,298 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,830 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,461 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,332 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,069 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,698 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,561 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,417 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,063 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,342 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,359 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,511 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,175 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,684 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,802 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,131 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,647 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,102 |
| Largest Countries By Category | 0 | - | 4.97 | 157,913 |
| Countries by Countries | 0 | - | 4.97 | 63,004 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,456 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,213 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,506 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,493 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,219 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,018 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,182 |
| Island Countries | 0 | - | 4.99 | 710,357 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,765 |
| Northernmost Countries | 0 | - | 4.99 | 361,192 |
| Countries of South America | 0 | - | 5.00 | 924,971 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,886 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,672 |
| "Land" Countries | 0 | - | 4.98 | 336,254 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,448 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,445 |
| Countries with Megacities | 0 | - | 4.99 | 263,336 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,284 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,235 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,580 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,274 |
| Countries by Official Language | 0 | - | 4.95 | 194,921 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,932 |
| Countries in their Native Language | 0 | - | 4.99 | 198,446 |
| Independence from Whom | 0 | - | 4.99 | 211,692 |
| Subdivisions by Country | 0 | - | 4.86 | 50,359 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,972 |
| Megadiverse Countries | 0 | - | 4.96 | 134,876 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,781 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,252 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,843 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,058 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,901 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,473 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,208 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,934 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,561 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,040 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,328 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,791 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,092 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,864 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,253 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,411 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,645 |
| World Map Quiz | 0 | - | 4.81 | 64,854 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,382 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,185 |
| Countries by Founding Story | 0 | - | 4.95 | 77,212 |
| Countries by Road Signs | 0 | - | 4.98 | 53,820 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,773 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,086 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,823 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,758 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,708 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,845 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,024 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,350 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,429 |
| Widest Countries East to West | 0 | - | 4.92 | 129,495 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,415 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,160 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,060 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,636 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,404 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,699 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,309 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,763 |
| Countries with Double Letters | 0 | - | 4.97 | 95,386 |
| Countries that End in N | 0 | - | 4.95 | 170,422 |
| Countries with Five Letters | 0 | - | 4.96 | 281,347 |
| Countries with Six Letters | 0 | - | 4.94 | 212,832 |
| Countries with W | 0 | - | 4.97 | 159,726 |
| Countries with Z | 0 | - | 4.98 | 290,639 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,989 |
| Countries That End in U | 0 | - | 4.95 | 120,524 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,006 |
| Countries that End in O | 0 | - | 4.92 | 159,291 |
| Countries that End in R | 0 | - | 4.87 | 118,809 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,578 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,615 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,332 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,222 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,837 |
| Countries That End in Y | 0 | - | 4.91 | 185,728 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,537 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,618 |
| Countries that End in I | 0 | - | 4.94 | 134,958 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,733 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,671 |
| Countries That End in NIA | 0 | - | 4.92 | 109,632 |
| Countries That End in BIA | 0 | - | 4.93 | 148,983 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,883 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,210 |
| Countries That End in RIA | 0 | - | 4.93 | 126,652 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,778 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,100 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,418 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,808 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,342 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,415 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,802 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,359 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,300 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,288 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,007 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,719 |
| Countries that End in L | 0 | - | 4.94 | 156,660 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,795 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,191 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,911 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,824 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,876 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,421 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,400 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,810 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,334 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,841 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,718 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,017 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,642 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,762 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,592 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,313 |
| One Border Countries | 0 | - | 4.98 | 468,570 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,828,723 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,622,806 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,715 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,788 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,898 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,390 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,534 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,077 |
| Countries by National Anthem | 0 | - | 4.93 | 71,237 |
| NATO Countries | 0 | - | 4.98 | 280,373 |
| EU Countries Quiz | 0 | - | 4.99 | 274,197 |
| Recently Independent Countries | 0 | - | 4.98 | 159,227 |
| French-Speaking Countries | 0 | - | 4.85 | 270,493 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,823 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,025 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,331 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,140 |
| German-Speaking Countries | 0 | - | 4.92 | 145,547 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,810 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,166 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,720 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,437 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,357 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,605 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,847 |
| Olympic Host Countries | 0 | - | 4.98 | 200,726 |
