| Landlocked Countries | 0 | - | 4.99 | 424,700 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,796,409 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,720 |
| Himalayan Countries | 0 | - | 4.93 | 139,838 |
| Andean Countries | 0 | - | 4.94 | 85,216 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,393 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,698 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,956 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,260 |
| Danube Countries | 0 | - | 4.97 | 72,289 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,438 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,726 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,893 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,392 |
| European Landlocked Countries | 0 | - | 4.99 | 147,476 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,116 |
| Countries with the Most Species | 0 | - | 4.99 | 103,503 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,265 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,718 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,828 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,762 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,496 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,919 |
| Countries in the Alps | 0 | - | 4.87 | 118,618 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,377 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,638 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,888 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,915 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,840 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,150 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,278 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,782 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,351 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,082 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,803 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,671 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,466 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,704 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,791 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,562 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,532 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,589 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,514 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,275 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,890 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,441 |
| Largest Countries By Category | 0 | - | 4.97 | 158,687 |
| Countries by Countries | 0 | - | 4.96 | 63,530 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,133 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,368 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,645 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,999 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,797,510 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,594 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,371 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,084 |
| Island Countries | 0 | - | 4.99 | 712,145 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,497 |
| Northernmost Countries | 0 | - | 4.99 | 363,496 |
| Countries of South America | 0 | - | 5.00 | 931,199 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,525 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,968 |
| "Land" Countries | 0 | - | 4.98 | 338,108 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,152 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,866 |
| Countries with Megacities | 0 | - | 4.99 | 266,532 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,575 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,954 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,866 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,061 |
| Countries by Official Language | 0 | - | 4.95 | 195,811 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,359 |
| Countries in their Native Language | 0 | - | 4.99 | 199,594 |
| Independence from Whom | 0 | - | 4.99 | 212,824 |
| Subdivisions by Country | 0 | - | 4.87 | 50,574 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,270 |
| Megadiverse Countries | 0 | - | 4.96 | 135,209 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,793 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,490 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,394 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,195 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,470 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,779 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,966 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,519 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,783 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,228 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,279 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,323 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,385 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,111 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,524 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,644 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,088 |
| World Map Quiz | 0 | - | 4.81 | 65,494 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,723 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,604 |
| Countries by Founding Story | 0 | - | 4.95 | 77,702 |
| Countries by Road Signs | 0 | - | 4.98 | 54,271 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,038 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,974 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,455 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,293 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,310 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,430 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,628 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,630 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,303 |
| Widest Countries East to West | 0 | - | 4.92 | 130,348 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,571 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,139 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,477 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,994 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,885 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,384 |
| 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 | 96,849 |
| Countries that End in N | 0 | - | 4.95 | 171,730 |
| Countries with Five Letters | 0 | - | 4.96 | 283,463 |
| Countries with Six Letters | 0 | - | 4.94 | 214,207 |
| Countries with W | 0 | - | 4.96 | 160,783 |
| Countries with Z | 0 | - | 4.98 | 292,184 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,129 |
| Countries That End in U | 0 | - | 4.95 | 121,088 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,942 |
| Countries that End in O | 0 | - | 4.92 | 159,737 |
| Countries that End in R | 0 | - | 4.87 | 119,125 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,879 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,631 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,024 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,738 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,659 |
| Countries That End in Y | 0 | - | 4.91 | 186,039 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,329 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,164 |
| Countries that End in I | 0 | - | 4.94 | 135,261 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,494 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,991 |
| Countries That End in NIA | 0 | - | 4.92 | 109,980 |
| Countries That End in BIA | 0 | - | 4.93 | 149,498 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,414 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,686 |
| Countries That End in RIA | 0 | - | 4.93 | 126,999 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,285 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,350 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,059 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,494 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,059 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,755 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,248 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,516 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,802 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,594 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,610 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,290 |
| Countries that End in L | 0 | - | 4.94 | 157,051 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,296 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,322 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,047 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,677 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,316 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,269 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,032 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,364 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,165 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,856 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,136 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,207 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,796 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,172 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,596 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,093 |
| One Border Countries | 0 | - | 4.98 | 471,433 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,844,968 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,647,968 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,231 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,827 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,547 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,821 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,109 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,509 |
| Countries by National Anthem | 0 | - | 4.92 | 71,386 |
| NATO Countries | 0 | - | 4.98 | 282,946 |
| EU Countries Quiz | 0 | - | 4.99 | 277,246 |
| Recently Independent Countries | 0 | - | 4.98 | 159,846 |
| French-Speaking Countries | 0 | - | 4.85 | 271,481 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,013 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,477 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,854 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,319 |
| German-Speaking Countries | 0 | - | 4.92 | 145,956 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,181 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,464 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,625 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,069 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,959 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,707 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 112,959 |
| Olympic Host Countries | 0 | - | 4.98 | 201,744 |
