| Countries of the World Quiz | 0 | - | 5.00 | 47,111,028 |
| Countries by National Anthem | 0 | - | 4.92 | 71,097 |
| Landlocked Countries | 0 | - | 4.99 | 415,975 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,735,802 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,585 |
| Himalayan Countries | 0 | - | 4.95 | 136,212 |
| Andean Countries | 0 | - | 4.95 | 83,301 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,592 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,803 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,294 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,915 |
| Danube Countries | 0 | - | 4.97 | 71,331 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,102 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,783 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,004 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,960 |
| European Landlocked Countries | 0 | - | 4.99 | 146,041 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,650 |
| Countries with the Most Species | 0 | - | 4.99 | 96,508 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,788 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,293 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,471 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,108 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,756 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,128 |
| Countries in the Alps | 0 | - | 4.86 | 117,243 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,831 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,741 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,205 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,657 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,504 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,201 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,894 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,947 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,743 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,276 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,320 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,177 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,672 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,933 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,942 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,593 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,846 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,380 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,123 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,637 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,407 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,778 |
| Largest Countries By Category | 0 | - | 4.97 | 157,164 |
| Countries by Countries | 0 | - | 4.96 | 62,521 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,780 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,059 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,395 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,030 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,363 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,514 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,205 |
| Island Countries | 0 | - | 4.99 | 708,583 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,559 |
| Northernmost Countries | 0 | - | 4.99 | 359,036 |
| Countries of South America | 0 | - | 5.00 | 918,743 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,551 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,856,460 |
| "Land" Countries | 0 | - | 4.98 | 334,267 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,368,782 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,103 |
| Countries with Megacities | 0 | - | 4.99 | 248,600 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,978 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,454 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,348 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,408 |
| Countries by Official Language | 0 | - | 4.95 | 193,772 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,261 |
| Countries in their Native Language | 0 | - | 4.99 | 197,425 |
| Independence from Whom | 0 | - | 4.99 | 210,386 |
| Subdivisions by Country | 0 | - | 4.86 | 50,169 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,210 |
| Megadiverse Countries | 0 | - | 4.96 | 134,497 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,635 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,053 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,589 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,933 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,031 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,175 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,468 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,502 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,331 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,795 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,061 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,554 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,649 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,621 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,825 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,161 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,336 |
| World Map Quiz | 0 | - | 4.81 | 63,933 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,027 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,647 |
| Countries by Founding Story | 0 | - | 4.95 | 76,811 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,937 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,603 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,319 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,524 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,186 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,384 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,567 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,109 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,588 |
| Widest Countries East to West | 0 | - | 4.92 | 129,090 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,305 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,572 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,707 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,915 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,915 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,297 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,969 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,656 |
| Countries with Double Letters | 0 | - | 4.96 | 93,816 |
| Countries that End in N | 0 | - | 4.94 | 157,247 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,204 |
| Countries with Six Letters | 0 | - | 4.93 | 210,840 |
| Countries with W | 0 | - | 4.97 | 158,502 |
| Countries with Z | 0 | - | 4.98 | 288,395 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,853 |
| Countries That End in U | 0 | - | 4.95 | 119,664 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,996 |
| Countries that End in O | 0 | - | 4.92 | 158,693 |
| Countries that End in R | 0 | - | 4.87 | 118,412 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,966 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,560 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,626 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,716 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,279 |
| Countries That End in Y | 0 | - | 4.90 | 185,319 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,729 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,997 |
| Countries that End in I | 0 | - | 4.94 | 134,593 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,588 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,353 |
| Countries That End in NIA | 0 | - | 4.92 | 109,219 |
| Countries That End in BIA | 0 | - | 4.93 | 148,455 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,337 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,701 |
| Countries That End in RIA | 0 | - | 4.93 | 126,257 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,245 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,911 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,764 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,122 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,665 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,071 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,352 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,874 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,759 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,939 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,426 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,095 |
| Countries that End in L | 0 | - | 4.94 | 156,206 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,534 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,037 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,674 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,506 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,571 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,174 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,727 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,114 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,748 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,169 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,991 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,849 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,272 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,486 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,471 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,973 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,608 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,810,887 |
| One Border Countries | 0 | - | 4.98 | 466,092 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,600,846 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,226 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,750 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,244 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,031 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,031 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,580 |
| Majority Muslim Countries | 0 | - | 4.98 | 371,376 |
| NATO Countries | 0 | - | 4.98 | 277,662 |
| EU Countries Quiz | 0 | - | 4.99 | 271,262 |
| Recently Independent Countries | 0 | - | 4.98 | 158,298 |
| French-Speaking Countries | 0 | - | 4.85 | 269,583 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,470 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,742 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,070 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,931 |
| German-Speaking Countries | 0 | - | 4.91 | 140,622 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,093,217 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,970 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,593 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,742 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,153 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,810 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 116,979 |
