| Countries of the World Quiz | 0 | - | 5.00 | 47,845,851 |
| Landlocked Countries | 0 | - | 4.99 | 425,270 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,801,536 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,010 |
| Himalayan Countries | 0 | - | 4.93 | 140,045 |
| Andean Countries | 0 | - | 4.94 | 85,327 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,481 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,850 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,059 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,340 |
| Danube Countries | 0 | - | 4.97 | 72,327 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,511 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,777 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,007 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,514 |
| European Landlocked Countries | 0 | - | 4.99 | 147,553 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,212 |
| Countries with the Most Species | 0 | - | 4.99 | 103,529 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,340 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,754 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,857 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,801 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,532 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,971 |
| Countries in the Alps | 0 | - | 4.87 | 118,703 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,512 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,767 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,925 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,976 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,897 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,202 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,342 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,815 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,386 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,133 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,833 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,706 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,516 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,740 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,839 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,720 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,572 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,725 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,616 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,500 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,033 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,479 |
| Largest Countries By Category | 0 | - | 4.97 | 158,790 |
| Countries by Countries | 0 | - | 4.96 | 63,593 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,203 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,384 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,654 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,060 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,063 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,547 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,451 |
| Island Countries | 0 | - | 4.99 | 712,382 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,252 |
| Northernmost Countries | 0 | - | 4.99 | 363,790 |
| Countries of South America | 0 | - | 5.00 | 932,035 |
| Countries of Oceania | 0 | - | 5.00 | 1,062,557 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,887,816 |
| "Land" Countries | 0 | - | 4.98 | 338,295 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,392,584 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,026 |
| Countries with Megacities | 0 | - | 4.99 | 266,871 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,741 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,047 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,058 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,172 |
| Countries by Official Language | 0 | - | 4.95 | 195,921 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,526 |
| Countries in their Native Language | 0 | - | 4.99 | 199,665 |
| Independence from Whom | 0 | - | 4.99 | 212,971 |
| Subdivisions by Country | 0 | - | 4.87 | 50,594 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,369 |
| Megadiverse Countries | 0 | - | 4.96 | 135,255 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,880 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,516 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,488 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,215 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,618 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,819 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,054 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,550 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,858 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,248 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,445 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,354 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,424 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,130 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,560 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,715 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,242 |
| World Map Quiz | 0 | - | 4.81 | 65,630 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,028 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,673 |
| Countries by Founding Story | 0 | - | 4.95 | 77,767 |
| Countries by Road Signs | 0 | - | 4.98 | 54,322 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,170 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,019 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,513 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,456 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,386 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,486 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,687 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,663 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,583 |
| Widest Countries East to West | 0 | - | 4.92 | 130,409 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,586 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,199 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,500 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,027 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,942 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,432 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,487 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,885 |
| Countries with Double Letters | 0 | - | 4.96 | 96,995 |
| Countries that End in N | 0 | - | 4.95 | 171,862 |
| Countries with Five Letters | 0 | - | 4.96 | 283,654 |
| Countries with Six Letters | 0 | - | 4.94 | 214,386 |
| Countries with W | 0 | - | 4.96 | 160,886 |
| Countries with Z | 0 | - | 4.98 | 292,351 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,241 |
| Countries That End in U | 0 | - | 4.95 | 121,161 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,046 |
| Countries that End in O | 0 | - | 4.92 | 160,187 |
| Countries that End in R | 0 | - | 4.87 | 119,158 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,914 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,766 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,108 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,786 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,717 |
| Countries That End in Y | 0 | - | 4.91 | 186,075 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,407 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,235 |
| Countries that End in I | 0 | - | 4.94 | 135,298 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,569 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,032 |
| Countries That End in NIA | 0 | - | 4.92 | 110,026 |
| Countries That End in BIA | 0 | - | 4.93 | 149,550 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,482 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,743 |
| Countries That End in RIA | 0 | - | 4.93 | 127,033 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,357 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,506 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,135 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,569 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,132 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,785 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,302 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,529 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,869 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,638 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,681 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,370 |
| Countries that End in L | 0 | - | 4.94 | 157,092 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,843 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,338 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,418 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,932 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,410 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,358 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,097 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,406 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,214 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,920 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,180 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,223 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,814 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,209 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,453,495 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,339 |
| One Border Countries | 0 | - | 4.98 | 471,763 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,847,209 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,650,725 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,676 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,288 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,950 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,613 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,868 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,174 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,566 |
| Countries by National Anthem | 0 | - | 4.93 | 71,399 |
| NATO Countries | 0 | - | 4.98 | 283,224 |
| EU Countries Quiz | 0 | - | 4.99 | 277,644 |
| Recently Independent Countries | 0 | - | 4.98 | 160,279 |
| French-Speaking Countries | 0 | - | 4.85 | 271,599 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,028 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,654 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,178 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,724 |
| German-Speaking Countries | 0 | - | 4.92 | 146,001 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,220 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,501 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,981 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,234 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,244 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,770 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 113,034 |
