| Countries of the World Quiz | 0 | - | 5.00 | 47,969,351 |
| Countries by National Anthem | 0 | - | 4.92 | 71,435 |
| Landlocked Countries | 0 | - | 4.99 | 427,245 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,812,450 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,912 |
| Himalayan Countries | 0 | - | 4.93 | 140,829 |
| Andean Countries | 0 | - | 4.94 | 85,802 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,917 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,489 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,466 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,691 |
| Danube Countries | 0 | - | 4.97 | 72,559 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,801 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,971 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,443 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,917 |
| European Landlocked Countries | 0 | - | 4.99 | 147,740 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,539 |
| Countries with the Most Species | 0 | - | 4.99 | 103,645 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,639 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,814 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,953 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,925 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,679 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,129 |
| Countries in the Alps | 0 | - | 4.87 | 118,973 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,992 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,133 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,053 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,172 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,128 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,390 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,596 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,992 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,515 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,314 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,954 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,831 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,675 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,924 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,021 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,149 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,734 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,450 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,842 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,308 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,493 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,616 |
| Largest Countries By Category | 0 | - | 4.97 | 159,095 |
| Countries by Countries | 0 | - | 4.97 | 63,807 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,446 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,450 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,705 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,230 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,615 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,038 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,358 |
| Island Countries | 0 | - | 4.99 | 713,013 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,160 |
| Northernmost Countries | 0 | - | 4.99 | 364,595 |
| Countries of South America | 0 | - | 5.00 | 934,290 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,529 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,017 |
| "Land" Countries | 0 | - | 4.98 | 338,994 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,046 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,502 |
| Countries with Megacities | 0 | - | 4.99 | 267,849 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,153 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,337 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,474 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,437 |
| Countries by Official Language | 0 | - | 4.95 | 196,222 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,945 |
| Countries in their Native Language | 0 | - | 4.99 | 199,963 |
| Independence from Whom | 0 | - | 4.99 | 213,407 |
| Subdivisions by Country | 0 | - | 4.87 | 50,667 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,665 |
| Megadiverse Countries | 0 | - | 4.96 | 149,047 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,136 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,577 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,807 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,259 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,471 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,925 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,280 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,626 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,166 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,288 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,771 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,488 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,508 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,218 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,641 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,976 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,733 |
| World Map Quiz | 0 | - | 4.81 | 65,926 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,889 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,817 |
| Countries by Founding Story | 0 | - | 4.95 | 77,908 |
| Countries by Road Signs | 0 | - | 4.98 | 54,449 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,515 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,234 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,707 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,931 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,553 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,662 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,849 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,764 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,942 |
| Widest Countries East to West | 0 | - | 4.92 | 130,854 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,628 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,402 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,563 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,159 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,111 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,616 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,535 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,922 |
| Countries with Double Letters | 0 | - | 4.96 | 97,632 |
| Countries that End in N | 0 | - | 4.95 | 172,631 |
| Countries with Five Letters | 0 | - | 4.96 | 284,642 |
| Countries with Six Letters | 0 | - | 4.94 | 214,960 |
| Countries with W | 0 | - | 4.96 | 161,317 |
| Countries with Z | 0 | - | 4.98 | 293,006 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,676 |
| Countries That End in U | 0 | - | 4.95 | 121,394 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,433 |
| Countries that End in O | 0 | - | 4.92 | 160,372 |
| Countries that End in R | 0 | - | 4.87 | 119,282 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,062 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,156 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 185,827 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,199 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,772 |
| Countries That End in Y | 0 | - | 4.91 | 186,176 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,292 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,422 |
| Countries that End in I | 0 | - | 4.94 | 135,424 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,273 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,148 |
| Countries That End in NIA | 0 | - | 4.92 | 110,159 |
| Countries That End in BIA | 0 | - | 4.93 | 149,741 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,935 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,906 |
| Countries That End in RIA | 0 | - | 4.93 | 127,148 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,545 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,945 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,394 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,861 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,408 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,923 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,459 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,609 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,060 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,736 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,909 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,617 |
| Countries that End in L | 0 | - | 4.94 | 157,250 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,593 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,379 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,887 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,157 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,545 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,660 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,311 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,522 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,412 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,193 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,320 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,298 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,970 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,874 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,363 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,032 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,979 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,853,296 |
| One Border Countries | 0 | - | 4.98 | 472,581 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,659,654 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,758 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,466 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,521 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,817 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,995 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,360 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,721 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,393 |
| NATO Countries | 0 | - | 4.98 | 283,988 |
| EU Countries Quiz | 0 | - | 4.99 | 278,889 |
| Recently Independent Countries | 0 | - | 4.98 | 160,511 |
| French-Speaking Countries | 0 | - | 4.85 | 271,883 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,241 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,212 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,906 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,769 |
| German-Speaking Countries | 0 | - | 4.92 | 146,092 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,128,207 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,771 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,890 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,078 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,723 |
