| Countries by National Anthem | 0 | - | 4.92 | 71,134 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,194,879 |
| Landlocked Countries | 0 | - | 4.99 | 417,063 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,743,621 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,309 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,993 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,067 |
| Island Countries | 0 | - | 4.99 | 708,985 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,115 |
| Himalayan Countries | 0 | - | 4.95 | 136,677 |
| Andean Countries | 0 | - | 4.95 | 83,572 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,828 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,107 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,495 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,087 |
| Danube Countries | 0 | - | 4.97 | 71,470 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,279 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,883 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,243 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,240 |
| European Landlocked Countries | 0 | - | 4.99 | 146,170 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,829 |
| Countries with the Most Species | 0 | - | 4.99 | 102,240 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,959 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,349 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,529 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,191 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,840 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,219 |
| Countries in the Alps | 0 | - | 4.86 | 117,396 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,937 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,000 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,283 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,782 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,873 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,293 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,039 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,019 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,846 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,384 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,385 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,221 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,764 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,030 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,036 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,794 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,920 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,453 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,283 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,235 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,682 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,858 |
| Largest Countries By Category | 0 | - | 4.97 | 157,326 |
| Countries by Countries | 0 | - | 4.96 | 62,637 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,474 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,927 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,094 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,131 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,813 |
| Northernmost Countries | 0 | - | 4.99 | 359,585 |
| Countries of South America | 0 | - | 5.00 | 920,254 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,735 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,103 |
| "Land" Countries | 0 | - | 4.98 | 334,861 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,544 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,012 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,436 |
| Countries with Megacities | 0 | - | 4.99 | 249,283 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,289 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,634 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,606 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,610 |
| Countries by Official Language | 0 | - | 4.95 | 194,126 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,933 |
| Countries in their Native Language | 0 | - | 4.99 | 197,738 |
| Independence from Whom | 0 | - | 4.99 | 210,912 |
| Subdivisions by Country | 0 | - | 4.86 | 50,215 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,415 |
| Megadiverse Countries | 0 | - | 4.96 | 134,577 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,928 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,092 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,651 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,958 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,489 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,256 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,664 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,580 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,393 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,815 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,390 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,602 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,702 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,668 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,880 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,231 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,687 |
| World Map Quiz | 0 | - | 4.81 | 64,174 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,613 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,742 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,126 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,714 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,444 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,805 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,315 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,502 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,665 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,169 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,797 |
| Widest Countries East to West | 0 | - | 4.92 | 129,185 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,336 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,710 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,938 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,981 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,016 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,393 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,134 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,685 |
| Countries with Double Letters | 0 | - | 4.96 | 94,326 |
| Countries that End in N | 0 | - | 4.95 | 167,969 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 264,528 |
| Countries with Six Letters | 0 | - | 4.93 | 211,416 |
| Countries with W | 0 | - | 4.97 | 158,968 |
| Countries with Z | 0 | - | 4.98 | 288,990 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,181 |
| Countries That End in U | 0 | - | 4.95 | 120,049 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,269 |
| Countries that End in O | 0 | - | 4.92 | 158,939 |
| Countries that End in R | 0 | - | 4.87 | 118,552 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,327 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,861 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,806 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,860 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,440 |
| Countries That End in Y | 0 | - | 4.90 | 185,468 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,918 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,145 |
| Countries that End in I | 0 | - | 4.94 | 134,707 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,753 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,436 |
| Countries That End in NIA | 0 | - | 4.92 | 109,324 |
| Countries That End in BIA | 0 | - | 4.93 | 148,614 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,468 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,815 |
| Countries That End in RIA | 0 | - | 4.93 | 126,375 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,386 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,177 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,911 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,252 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,858 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,178 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,486 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,998 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,885 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,050 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,270 |
| Countries that End in L | 0 | - | 4.94 | 156,329 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,095 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,089 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,729 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,590 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,646 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,392 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,853 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,400 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,869 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,317 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,072 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,883 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,310 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,536 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,539 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,815,224 |
| One Border Countries | 0 | - | 4.98 | 466,671 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,606,075 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,330 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,998 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,399 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,120 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,137 |
| Cities with the Most Opera Performances | 0 | - | 4.61 | 41,194 |
| Majority Muslim Countries | 0 | - | 4.98 | 372,141 |
| NATO Countries | 0 | - | 4.98 | 278,337 |
| EU Countries Quiz | 0 | - | 4.99 | 271,905 |
| Recently Independent Countries | 0 | - | 4.98 | 158,437 |
| French-Speaking Countries | 0 | - | 4.85 | 269,845 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,596 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,059 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,578 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,670 |
| German-Speaking Countries | 0 | - | 4.91 | 144,401 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,095,034 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,073 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,673 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,254 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,489 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,185 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,274 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 112,139 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,366 |
| Olympic Host Countries | 0 | - | 4.98 | 199,724 |
