| Landlocked Countries | 0 | - | 4.99 | 424,640 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,790,473 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,691 |
| Himalayan Countries | 0 | - | 4.93 | 139,822 |
| Andean Countries | 0 | - | 4.94 | 85,205 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,386 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,679 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,956 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,248 |
| Danube Countries | 0 | - | 4.97 | 72,282 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,434 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,722 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,884 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,383 |
| European Landlocked Countries | 0 | - | 4.99 | 147,469 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,110 |
| Countries with the Most Species | 0 | - | 4.99 | 103,497 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,257 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,713 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,827 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,758 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,493 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,915 |
| Countries in the Alps | 0 | - | 4.87 | 118,606 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,352 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,624 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,887 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,906 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,832 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,145 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,267 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,778 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,348 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,081 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,800 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,667 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,459 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,699 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,787 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,550 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,530 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,567 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,503 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,260 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,872 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,436 |
| Largest Countries By Category | 0 | - | 4.97 | 158,679 |
| Countries by Countries | 0 | - | 4.96 | 63,518 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,115 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,367 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,645 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,993 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,797,015 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,546 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,345 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,040 |
| Island Countries | 0 | - | 4.99 | 712,126 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,414 |
| Northernmost Countries | 0 | - | 4.99 | 363,468 |
| Countries of South America | 0 | - | 5.00 | 931,045 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,433 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,750 |
| "Land" Countries | 0 | - | 4.98 | 338,090 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,002 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,849 |
| Countries with Megacities | 0 | - | 4.99 | 266,499 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,556 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,944 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,851 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,050 |
| Countries by Official Language | 0 | - | 4.95 | 195,794 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,336 |
| Countries in their Native Language | 0 | - | 4.99 | 199,577 |
| Independence from Whom | 0 | - | 4.99 | 212,802 |
| Subdivisions by Country | 0 | - | 4.87 | 50,571 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,258 |
| Megadiverse Countries | 0 | - | 4.96 | 135,207 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,782 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,487 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,391 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,191 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,458 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,776 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,950 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,516 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,782 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,228 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,249 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,320 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,382 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,111 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,519 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,642 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,071 |
| World Map Quiz | 0 | - | 4.81 | 65,482 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,683 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,597 |
| Countries by Founding Story | 0 | - | 4.95 | 77,694 |
| Countries by Road Signs | 0 | - | 4.98 | 54,263 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,029 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,961 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,446 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,271 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,302 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,427 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,620 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,628 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,267 |
| Widest Countries East to West | 0 | - | 4.92 | 130,342 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,569 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,126 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,475 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,992 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,880 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,378 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,468 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,870 |
| Countries with Double Letters | 0 | - | 4.96 | 96,839 |
| Countries that End in N | 0 | - | 4.95 | 171,715 |
| Countries with Five Letters | 0 | - | 4.96 | 283,438 |
| Countries with Six Letters | 0 | - | 4.94 | 214,197 |
| Countries with W | 0 | - | 4.96 | 160,771 |
| Countries with Z | 0 | - | 4.98 | 292,171 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,121 |
| Countries That End in U | 0 | - | 4.95 | 121,087 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,928 |
| Countries that End in O | 0 | - | 4.92 | 159,733 |
| Countries that End in R | 0 | - | 4.87 | 119,122 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,873 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,621 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,022 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,730 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,654 |
| Countries That End in Y | 0 | - | 4.91 | 186,034 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,315 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,157 |
| Countries that End in I | 0 | - | 4.94 | 135,260 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,481 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,987 |
| Countries That End in NIA | 0 | - | 4.92 | 109,973 |
| Countries That End in BIA | 0 | - | 4.93 | 149,485 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,407 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,684 |
| Countries That End in RIA | 0 | - | 4.93 | 126,996 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,282 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,325 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,054 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,484 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,052 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,749 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,239 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,515 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,797 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,592 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,602 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,287 |
| Countries that End in L | 0 | - | 4.94 | 157,049 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,167 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,319 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,998 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,645 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,307 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,252 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,024 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,356 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,154 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,848 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,132 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,199 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,792 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,169 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,471 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,064 |
| One Border Countries | 0 | - | 4.98 | 471,385 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,844,731 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,647,634 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,220 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,810 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,535 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,817 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,102 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,499 |
| Countries by National Anthem | 0 | - | 4.92 | 71,384 |
| NATO Countries | 0 | - | 4.98 | 282,921 |
| EU Countries Quiz | 0 | - | 4.99 | 277,195 |
| Recently Independent Countries | 0 | - | 4.98 | 159,839 |
| French-Speaking Countries | 0 | - | 4.85 | 271,467 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,010 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,457 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,819 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,267 |
| German-Speaking Countries | 0 | - | 4.92 | 145,950 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,177 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,457 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,602 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,054 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,931 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,696 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 112,949 |
| Olympic Host Countries | 0 | - | 4.98 | 201,730 |
