| Countries of the World Quiz | 0 | - | 5.00 | 47,335,890 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,267 |
| NATO Countries | 0 | - | 4.98 | 279,368 |
| EU Countries Quiz | 0 | - | 4.99 | 272,957 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,496 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,961 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,793 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 148,021 |
| Countries with NO Military | 0 | - | 4.97 | 61,979 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,417 |
| Landlocked Countries | 0 | - | 4.99 | 418,962 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,818 |
| Countries with the Most Tanks | 0 | - | 4.91 | 107,152 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,372 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,668 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,878 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,910 |
| Buddhist Countries | 0 | - | 4.96 | 143,946 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,831 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 123,212 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,757,029 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,006 |
| Himalayan Countries | 0 | - | 4.94 | 137,436 |
| Andean Countries | 0 | - | 4.95 | 83,945 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,235 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,667 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,838 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,356 |
| Danube Countries | 0 | - | 4.97 | 71,667 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,558 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,058 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,658 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,738 |
| European Landlocked Countries | 0 | - | 4.99 | 146,779 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,143 |
| Countries with the Most Species | 0 | - | 4.99 | 102,911 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,273 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,433 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,589 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,305 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,994 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,368 |
| Countries in the Alps | 0 | - | 4.87 | 117,693 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,136 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,370 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,424 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,988 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,098 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,597 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,287 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,191 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,970 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,556 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,480 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,339 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,927 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,190 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,209 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,194 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,064 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,574 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,533 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,388 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,233 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,001 |
| Largest Countries By Category | 0 | - | 4.97 | 157,643 |
| Countries by Countries | 0 | - | 4.96 | 62,841 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,325 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,022 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,613 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,117 |
| Island Countries | 0 | - | 4.99 | 709,766 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,071 |
| Northernmost Countries | 0 | - | 4.99 | 360,479 |
| Countries of South America | 0 | - | 5.00 | 922,930 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,080 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,420 |
| "Land" Countries | 0 | - | 4.98 | 335,802 |
| Countries that Start with A | 0 | - | 4.98 | 2,159,082 |
| Countries that Start with B | 0 | - | 4.95 | 2,291,066 |
| Countries that Start with C | 0 | - | 4.96 | 1,819,345 |
| Countries that Start with D | 0 | - | 4.96 | 707,723 |
| Countries that Start with E | 0 | - | 4.95 | 1,374,939 |
| Countries that Start with G | 0 | - | 4.97 | 1,500,601 |
| Countries that Start with H | 0 | - | 4.96 | 603,169 |
| Countries that Start with I | 0 | - | 4.92 | 1,286,249 |
| Countries that Start with J | 0 | - | 4.98 | 601,007 |
| Countries that Start with K | 0 | - | 4.97 | 814,228 |
| Countries that Start with L | 0 | - | 4.98 | 1,088,979 |
| Countries that Start with N | 0 | - | 4.93 | 1,115,926 |
| Countries that Start with P | 0 | - | 4.94 | 1,214,434 |
| Countries that Start with S | 0 | - | 4.98 | 1,752,507 |
| Countries that Start with T | 0 | - | 4.90 | 1,008,547 |
| Countries that Start with U | 0 | - | 4.97 | 903,417 |
| Countries that Start with V | 0 | - | 4.98 | 608,463 |
| Countries that Start with F | 0 | - | 4.83 | 616,354 |
| Countries that Start with M | 0 | - | 4.97 | 1,379,722 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,121 |
| Orthodox Countries | 0 | - | 4.92 | 131,334 |
| Richest Island Countries | 0 | - | 4.84 | 100,313 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,760 |
| Monarchies of Europe | 0 | - | 4.90 | 97,975 |
| Monarchies of Asia | 0 | - | 4.97 | 70,990 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,553 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,782 |
| Countries with the Most Muslims | 0 | - | 4.95 | 160,167 |
| Countries with the Most Exports | 0 | - | 4.96 | 155,121 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 189,439 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,294 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,285 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 270,441 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,062 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,375 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,490 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,930 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,176 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,028 |
| Countries with Megacities | 0 | - | 4.99 | 260,097 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,903 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,997 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,178 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,006 |
| Countries by Official Language | 0 | - | 4.95 | 194,645 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,539 |
| Countries in their Native Language | 0 | - | 4.99 | 198,189 |
| Independence from Whom | 0 | - | 4.99 | 211,322 |
| Subdivisions by Country | 0 | - | 4.86 | 50,287 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,710 |
| Megadiverse Countries | 0 | - | 4.96 | 134,769 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,547 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,185 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,756 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,018 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,714 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,381 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,981 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,846 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,487 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,990 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,983 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,718 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,995 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,775 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,963 |
| Richest Countries A-Z | 0 | - | 4.91 | 102,774 |
| Large Countries with Small Economies | 0 | - | 4.95 | 80,776 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,034 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,509 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,928 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,640 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,330 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,519 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,673 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,831 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,262 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,286 |
| Widest Countries East to West | 0 | - | 4.92 | 129,378 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,382 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,965 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,994 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,512 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,222 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,551 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,234 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,728 |
| Countries with Double Letters | 0 | - | 4.97 | 95,096 |
| Countries that End in N | 0 | - | 4.95 | 170,001 |
| Countries with Five Letters | 0 | - | 4.96 | 280,246 |
| Countries with Six Letters | 0 | - | 4.94 | 212,488 |
| Countries with W | 0 | - | 4.97 | 159,523 |
| Countries with Z | 0 | - | 4.98 | 289,810 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,753 |
| Countries That End in U | 0 | - | 4.95 | 120,414 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,757 |
| Countries that End in O | 0 | - | 4.92 | 159,198 |
| Countries that End in R | 0 | - | 4.87 | 118,735 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,515 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,337 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,110 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,087 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,668 |
| Countries That End in Y | 0 | - | 4.90 | 185,648 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,227 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,429 |
| Countries that End in I | 0 | - | 4.94 | 134,871 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,084 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,580 |
| Countries That End in NIA | 0 | - | 4.92 | 109,517 |
| Countries That End in BIA | 0 | - | 4.93 | 148,845 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,721 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,063 |
| Countries That End in RIA | 0 | - | 4.93 | 126,542 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,634 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,711 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,232 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,589 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,120 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,329 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,689 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,245 |
