| Landlocked Countries | 0 | - | 4.99 | 417,646 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,243,693 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,673 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,377 |
| Himalayan Countries | 0 | - | 4.94 | 136,893 |
| Andean Countries | 0 | - | 4.95 | 83,667 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,930 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,254 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,592 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,176 |
| Danube Countries | 0 | - | 4.97 | 71,520 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,359 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,941 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,389 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,456 |
| European Landlocked Countries | 0 | - | 4.99 | 146,302 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,953 |
| Countries with the Most Species | 0 | - | 4.99 | 102,611 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,071 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,374 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,550 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,225 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,884 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,268 |
| Countries in the Alps | 0 | - | 4.86 | 117,491 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,003 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,115 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,334 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,847 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,947 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,363 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,123 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,079 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,884 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,428 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,419 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,269 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,825 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,094 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,107 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,935 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,972 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,500 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,362 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,664 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,882 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,906 |
| Largest Countries By Category | 0 | - | 4.97 | 157,440 |
| Countries by Countries | 0 | - | 4.96 | 62,717 |
| Country Flags with the Most White | 0 | - | 4.87 | 138,024 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,120 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,440 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,198 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,748,485 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,900 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,260 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,450 |
| Island Countries | 0 | - | 4.99 | 709,250 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,672 |
| Northernmost Countries | 0 | - | 4.99 | 359,920 |
| Countries of South America | 0 | - | 5.00 | 921,241 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,958 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,862,383 |
| "Land" Countries | 0 | - | 4.98 | 335,430 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,918 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,620 |
| Countries with Megacities | 0 | - | 4.99 | 249,638 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,456 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,746 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,795 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,712 |
| Countries by Official Language | 0 | - | 4.95 | 194,402 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,225 |
| Countries in their Native Language | 0 | - | 4.99 | 197,966 |
| Independence from Whom | 0 | - | 4.99 | 211,064 |
| Subdivisions by Country | 0 | - | 4.86 | 50,239 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,513 |
| Megadiverse Countries | 0 | - | 4.96 | 134,677 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,099 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,134 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,692 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,979 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,562 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,297 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,778 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,700 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,432 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,842 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,583 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,646 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,759 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,708 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,937 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,270 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,853 |
| World Map Quiz | 0 | - | 4.81 | 64,306 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,931 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,883 |
| Countries by Founding Story | 0 | - | 4.95 | 76,968 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,262 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,795 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,519 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,006 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,390 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,575 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,731 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,199 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,189 |
| Widest Countries East to West | 0 | - | 4.92 | 129,252 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,352 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,791 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,964 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,423 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,087 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,444 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,177 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,703 |
| Countries with Double Letters | 0 | - | 4.97 | 94,783 |
| Countries that End in N | 0 | - | 4.95 | 169,243 |
| Countries with Five Letters | 0 | - | 4.96 | 276,823 |
| Countries with Six Letters | 0 | - | 4.94 | 212,124 |
| Countries with W | 0 | - | 4.97 | 159,293 |
| Countries with Z | 0 | - | 4.98 | 289,474 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,494 |
| Countries That End in U | 0 | - | 4.95 | 120,285 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,521 |
| Countries that End in O | 0 | - | 4.92 | 159,104 |
| Countries that End in R | 0 | - | 4.87 | 118,650 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,432 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,091 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,950 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,970 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,558 |
| Countries That End in Y | 0 | - | 4.90 | 185,575 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,052 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,268 |
| Countries that End in I | 0 | - | 4.94 | 134,777 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,882 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,501 |
| Countries That End in NIA | 0 | - | 4.92 | 109,419 |
| Countries That End in BIA | 0 | - | 4.93 | 148,714 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,571 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,931 |
| Countries That End in RIA | 0 | - | 4.93 | 126,435 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,518 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,372 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,041 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,385 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,980 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,246 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,575 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,109 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,000 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,125 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,689 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,371 |
| Countries that End in L | 0 | - | 4.94 | 156,448 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,499 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,128 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,775 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,637 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,695 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,508 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,951 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,485 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,932 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,407 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,186 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,900 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,324 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,559 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,579 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,519 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,276 |
| One Border Countries | 0 | - | 4.98 | 467,041 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,817,821 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,609,304 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,412 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,127 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,500 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,174 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,223 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,786 |
| Countries by National Anthem | 0 | - | 4.92 | 71,154 |
| NATO Countries | 0 | - | 4.98 | 278,700 |
| EU Countries Quiz | 0 | - | 4.99 | 272,292 |
| Recently Independent Countries | 0 | - | 4.98 | 158,577 |
| French-Speaking Countries | 0 | - | 4.85 | 270,001 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,710 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,234 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,912 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,123 |
| German-Speaking Countries | 0 | - | 4.91 | 144,911 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,133 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,731 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,710 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,410 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,470 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 112,233 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,444 |
