| Landlocked Countries | 0 | - | 4.99 | 421,894 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,576,934 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,118 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,400 |
| Himalayan Countries | 0 | - | 4.95 | 138,678 |
| Andean Countries | 0 | - | 4.93 | 84,584 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,779 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,786 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,403 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,791 |
| Danube Countries | 0 | - | 4.97 | 71,998 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,004 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,417 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,287 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,766 |
| European Landlocked Countries | 0 | - | 4.99 | 147,137 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,623 |
| Countries with the Most Species | 0 | - | 4.99 | 103,239 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,752 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,588 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,721 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,538 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,220 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,654 |
| Countries in the Alps | 0 | - | 4.87 | 118,195 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,067 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,020 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,638 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,592 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,502 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,944 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,666 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,485 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,175 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,835 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,648 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,521 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,216 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,463 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,513 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,887 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,304 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,683 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,058 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,891 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,078 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,224 |
| Largest Countries By Category | 0 | - | 4.97 | 158,198 |
| Countries by Countries | 0 | - | 4.96 | 63,217 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,672 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,283 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,565 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,672 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,778,139 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,515 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,484 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,155 |
| Island Countries | 0 | - | 4.99 | 711,019 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,773 |
| Northernmost Countries | 0 | - | 4.99 | 361,929 |
| Countries of South America | 0 | - | 5.00 | 927,252 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,712 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,008 |
| "Land" Countries | 0 | - | 4.98 | 337,315 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,485 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,868 |
| Countries with Megacities | 0 | - | 4.99 | 264,491 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,721 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,457 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,978 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,525 |
| Countries by Official Language | 0 | - | 4.95 | 195,235 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,351 |
| Countries in their Native Language | 0 | - | 4.99 | 199,029 |
| Independence from Whom | 0 | - | 4.99 | 212,070 |
| Subdivisions by Country | 0 | - | 4.86 | 50,429 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,715 |
| Megadiverse Countries | 0 | - | 4.96 | 135,004 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,068 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,346 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,233 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,097 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,132 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,593 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,456 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,029 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,652 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,145 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,658 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,873 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,196 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,959 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,344 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,493 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,157 |
| World Map Quiz | 0 | - | 4.81 | 65,066 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,249 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,343 |
| Countries by Founding Story | 0 | - | 4.95 | 77,360 |
| Countries by Road Signs | 0 | - | 4.98 | 54,004 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,076 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,270 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,990 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,170 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,880 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,003 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,292 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,435 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,565 |
| Widest Countries East to West | 0 | - | 4.92 | 129,634 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,450 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,365 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,117 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,763 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,592 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,864 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,370 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,796 |
| Countries with Double Letters | 0 | - | 4.96 | 96,216 |
| Countries that End in N | 0 | - | 4.95 | 171,094 |
| Countries with Five Letters | 0 | - | 4.96 | 282,406 |
| Countries with Six Letters | 0 | - | 4.94 | 213,517 |
| Countries with W | 0 | - | 4.97 | 160,304 |
| Countries with Z | 0 | - | 4.98 | 291,415 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,677 |
| Countries That End in U | 0 | - | 4.95 | 120,841 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,441 |
| Countries that End in O | 0 | - | 4.92 | 159,501 |
| Countries that End in R | 0 | - | 4.87 | 118,961 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,720 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,058 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,680 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,463 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,382 |
| Countries That End in Y | 0 | - | 4.91 | 185,861 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,891 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,841 |
| Countries that End in I | 0 | - | 4.94 | 135,083 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,076 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,814 |
| Countries That End in NIA | 0 | - | 4.92 | 109,775 |
| Countries That End in BIA | 0 | - | 4.93 | 149,183 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,110 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,414 |
| Countries That End in RIA | 0 | - | 4.93 | 126,799 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,010 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,566 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,682 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,091 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,649 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,567 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,008 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,437 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,511 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,406 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,267 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,966 |
| Countries that End in L | 0 | - | 4.94 | 156,828 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,680 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,259 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,010 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,944 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,985 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,720 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,632 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,979 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,522 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,410 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,849 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,094 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,703 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,867 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,059 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,945 |
| One Border Countries | 0 | - | 4.98 | 469,833 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,834,486 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,631,828 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,920 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,165 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,130 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,547 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,725 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,210 |
| Countries by National Anthem | 0 | - | 4.93 | 71,288 |
| NATO Countries | 0 | - | 4.98 | 281,471 |
| EU Countries Quiz | 0 | - | 4.99 | 275,417 |
| Recently Independent Countries | 0 | - | 4.98 | 159,461 |
| French-Speaking Countries | 0 | - | 4.85 | 270,826 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,893 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,503 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,246 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,363 |
| German-Speaking Countries | 0 | - | 4.91 | 145,737 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,957 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,282 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,289 |
| Top Five Countries by Religion | 0 | - | 4.93 | 172,178 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,868 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,020 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 112,528 |
