| Countries of the World Quiz | 0 | - | 5.00 | 40,959,886 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 324,064 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,074,610 |
| Members of the Arab League | 0 | - | 4.85 | 62,032 |
| Sahara Desert Countries | 0 | - | 4.97 | 127,005 |
| Himalayan Countries | 0 | - | 4.94 | 104,848 |
| Andean Countries | 0 | - | 4.91 | 58,133 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 59,104 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,374 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,724 |
| Coffee Producing Countries | 0 | - | 4.81 | 54,045 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,311 |
| Danube Countries | 0 | - | 4.97 | 56,644 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,694 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,852 |
| Countries with the Best Passports | 0 | - | 4.88 | 71,237 |
| Countries with the Worst Passports | 0 | - | 4.87 | 49,373 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,551 |
| European Landlocked Countries | 0 | - | 4.99 | 115,511 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,373 |
| Countries with the Most Species | 0 | - | 4.99 | 89,532 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,357 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,683 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,012 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,292 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,419 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,698 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,152 |
| Countries in the Alps | 0 | - | 4.84 | 102,662 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,326 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 87,171 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,590 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,264 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,985 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,566 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,633 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,145 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,323 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,654 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,435 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,596 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,671 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,504 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,975 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,480 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 98,085 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,344 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,390 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 196,358 |
| World Countries - Blind Typing | 0 | - | 5.00 | 72,925 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,284 |
| Largest Countries By Category | 0 | - | 4.96 | 144,921 |
| Countries by Countries | 0 | - | 4.96 | 54,651 |
| Country Flags with the Most White | 0 | - | 4.90 | 124,487 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,706 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,219 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 341,222 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 355,682 |
| Island Countries Quiz | 0 | - | 4.99 | 660,772 |
| Biggest Countries by Area | 0 | - | 5.00 | 933,515 |
| Northernmost Countries | 0 | - | 4.99 | 327,299 |
| Countries of South America | 0 | - | 5.00 | 793,828 |
| Countries of Oceania | 0 | - | 5.00 | 894,204 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,154,687 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,573,878 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 125,999 |
| Countries with Megacities | 0 | - | 4.99 | 197,385 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,658 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 98,005 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 95,476 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 63,978 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 248,067 |
| Countries by Official Language | 0 | - | 4.96 | 172,530 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 249,347 |
| Countries in their Native Language | 0 | - | 4.98 | 178,360 |
| Independence from Whom | 0 | - | 4.99 | 185,680 |
| Subdivisions by Country | 0 | - | 4.82 | 46,446 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,512 |
| Megadiverse Countries | 0 | - | 4.96 | 125,335 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 91,457 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,703 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,387 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 131,607 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,157 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,939 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,141 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,053 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,357 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,845 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,614 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,021 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,970 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,551 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,284 |
| Countries of the World in Alphabetical Order | 0 | - | 4.99 | 82,342 |
| World Map Quiz | 0 | - | 4.90 | 49,451 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 81,521 |
| Southernmost Countries of the World | 0 | - | 4.99 | 206,885 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 91,003 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 108,102 |
| Countries With the Most Languages | 0 | - | 4.91 | 173,790 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,359 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,652 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,364 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 54,006 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,482 |
| Widest Countries East to West | 0 | - | 4.93 | 119,411 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,828 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,068 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,675 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 85,623 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 119,389 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,214 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 66,473 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.82 | 32,063 |
| Countries with Double Letters | 0 | - | 4.96 | 68,505 |
| Countries that End in N | 0 | - | 4.93 | 132,836 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 229,891 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 187,167 |
| Countries with W | 0 | - | 4.96 | 122,803 |
| Countries with Z | 0 | - | 4.98 | 244,564 |
| Countries with Letters Missing | 0 | - | 4.97 | 166,624 |
| Countries That End in U | 0 | - | 4.95 | 107,611 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 89,617 |
| Countries that End in O | 0 | - | 4.92 | 146,978 |
| Countries that End in R | 0 | - | 4.85 | 96,509 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,266 |
| Countries Ending in "IA" | 0 | - | 4.99 | 171,479 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,851 |
| Countries by Last Two Letters | 0 | - | 4.91 | 116,266 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 129,347 |
| Countries That End in Y | 0 | - | 4.90 | 161,668 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 161,084 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,821 |
| Countries that End in I | 0 | - | 4.92 | 114,522 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 149,620 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,323 |
| Countries That End in NIA | 0 | - | 4.93 | 100,886 |
| Countries That End in BIA | 0 | - | 4.91 | 126,141 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 153,314 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,808 |
| Countries That End in RIA | 0 | - | 4.90 | 101,022 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 100,509 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 200,934 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 119,778 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 110,674 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 77,472 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 92,293 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,787 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 42,866 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 40,811 |
| Countries that End in L | 0 | - | 4.95 | 134,335 |
| "Land" Countries | 0 | - | 4.98 | 289,309 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 188,937 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.97 | 65,188 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,328 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,223 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,663 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 208,001 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 166,467 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 116,532 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 133,149 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 193,979 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,928 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,920 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 92,096 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,351 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,092 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,312,025 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,742 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,066,111 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,397,017 |
| One Border Countries | 0 | - | 4.98 | 410,330 |
| Countries With One Word and Three A's | 0 | - | 4.85 | 30,873 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,162 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 245,156 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 109,096 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 90,001 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 69,855 |
| Countries by National Anthem | 0 | - | 4.95 | 61,851 |
| NATO Countries Quiz | 0 | - | 4.98 | 225,569 |
| EU Countries Quiz | 0 | - | 4.99 | 228,043 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 144,753 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 77,637 |
| Countries That Use the Euro | 0 | - | 4.92 | 63,179 |
| Countries with the Most Military Troops | 0 | - | 4.94 | 226,001 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 217,511 |
| German-Speaking Countries | 0 | - | 4.88 | 117,573 |
| Word Scramble - Countries | 0 | - | 4.87 | 1,921,958 |
| Countries with Wild Tigers | 0 | - | 4.95 | 110,940 |
| Countries with Wild Penguins | 0 | - | 4.93 | 90,220 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 384,544 |
| Solve the Secret Country #1 | 0 | - | 4.95 | 130,211 |
| Top Five Countries by Religion | 0 | - | 4.90 | 142,111 |
| Solve the Secret Country #2 | 0 | - | 4.90 | 88,370 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 81,644 |
| Olympic Host Countries | 0 | - | 4.98 | 161,904 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 98,956 |
| Anagram Chain - Countries | 0 | - | 4.98 | 96,791 |
| 10 Easternmost Countries in Europe | 0 | - | 4.85 | 92,409 |
