| Landlocked Countries | 0 | - | 4.99 | 427,194 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,964,287 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,885 |
| Himalayan Countries | 0 | - | 4.93 | 140,797 |
| Andean Countries | 0 | - | 4.94 | 85,786 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,907 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,474 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,456 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,681 |
| Danube Countries | 0 | - | 4.97 | 72,543 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,792 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,970 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,427 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,904 |
| European Landlocked Countries | 0 | - | 4.99 | 147,732 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,528 |
| Countries with the Most Species | 0 | - | 4.99 | 103,641 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,631 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,812 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,951 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,922 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,674 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,125 |
| Countries in the Alps | 0 | - | 4.87 | 118,964 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,976 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,115 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,053 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,167 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,122 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,386 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,584 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,987 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,510 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,309 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,950 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,829 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,667 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,919 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,015 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,134 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,727 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,406 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,830 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,268 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,476 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,609 |
| Largest Countries By Category | 0 | - | 4.97 | 159,078 |
| Countries by Countries | 0 | - | 4.97 | 63,799 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,426 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,446 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,704 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,221 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,811,920 |
| Bordering Countries by HDI Difference | 0 | - | 4.89 | 52,189 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,562 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,028 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,332 |
| Island Countries | 0 | - | 4.99 | 712,991 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,091 |
| Northernmost Countries | 0 | - | 4.99 | 364,570 |
| Countries of South America | 0 | - | 5.00 | 934,178 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,383 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,807 |
| "Land" Countries | 0 | - | 4.98 | 338,974 |
| Highest HDI Countries with Exceptions | 0 | - | 4.61 | 63,321 |
| Lowest HDI Countries with Exceptions | 0 | - | 4.63 | 43,572 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,879 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,478 |
| Countries with Megacities | 0 | - | 4.99 | 267,804 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,130 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,330 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,459 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,427 |
| Countries by Official Language | 0 | - | 4.95 | 196,206 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,926 |
| Countries in their Native Language | 0 | - | 4.99 | 199,948 |
| Independence from Whom | 0 | - | 4.99 | 213,393 |
| Subdivisions by Country | 0 | - | 4.87 | 50,664 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,651 |
| Megadiverse Countries | 0 | - | 4.96 | 148,916 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,127 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,573 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,801 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,257 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,461 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,924 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,272 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,622 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,162 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,284 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,752 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,482 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,503 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,637 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,967 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,712 |
| World Map Quiz | 0 | - | 4.81 | 65,920 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,867 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,811 |
| Countries by Founding Story | 0 | - | 4.95 | 77,904 |
| Countries by Road Signs | 0 | - | 4.98 | 54,440 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,502 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,227 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,699 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,912 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,541 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,658 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,845 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,761 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,936 |
| Widest Countries East to West | 0 | - | 4.92 | 130,842 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,627 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,392 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,559 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,155 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,102 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,608 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,532 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,922 |
| Countries with Double Letters | 0 | - | 4.96 | 97,608 |
| Countries that End in N | 0 | - | 4.95 | 172,615 |
| Countries with Five Letters | 0 | - | 4.96 | 284,618 |
| Countries with Six Letters | 0 | - | 4.94 | 214,942 |
| Countries with W | 0 | - | 4.96 | 161,297 |
| Countries with Z | 0 | - | 4.98 | 292,979 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,659 |
| Countries That End in U | 0 | - | 4.95 | 121,383 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,416 |
| Countries that End in O | 0 | - | 4.92 | 160,368 |
| Countries that End in R | 0 | - | 4.87 | 119,276 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,058 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,139 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 185,438 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,179 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,718 |
| Countries That End in Y | 0 | - | 4.91 | 186,172 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,223 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,411 |
| Countries that End in I | 0 | - | 4.94 | 135,421 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,232 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,142 |
| Countries That End in NIA | 0 | - | 4.92 | 110,156 |
| Countries That End in BIA | 0 | - | 4.93 | 149,733 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,925 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,896 |
| Countries That End in RIA | 0 | - | 4.93 | 127,143 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,539 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,927 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,380 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,843 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,398 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,918 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,448 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,603 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,047 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,730 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,901 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,605 |
| Countries that End in L | 0 | - | 4.94 | 157,246 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,565 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,378 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,881 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,155 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,540 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,650 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,301 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,520 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,406 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,185 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,317 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,295 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,968 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,873 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,360 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,942 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,948 |
| One Border Countries | 0 | - | 4.98 | 472,547 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,755 |
| Five Highest HDI Countries by Continent | 0 | - | 4.55 | 58,690 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,852,960 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,659,317 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,462 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,506 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,807 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,992 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,356 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,716 |
| Countries by National Anthem | 0 | - | 4.92 | 71,433 |
| NATO Countries | 0 | - | 4.98 | 283,951 |
| EU Countries Quiz | 0 | - | 4.99 | 278,843 |
| Recently Independent Countries | 0 | - | 4.98 | 160,502 |
| French-Speaking Countries | 0 | - | 4.85 | 271,868 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,239 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,172 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,875 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,641 |
| German-Speaking Countries | 0 | - | 4.92 | 146,088 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,760 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,877 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,692 |
