| Countries of the World Quiz | 0 | - | 5.00 | 47,813,599 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,212 |
| NATO Countries | 0 | - | 4.98 | 283,034 |
| EU Countries Quiz | 0 | - | 4.99 | 277,373 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,938 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,471 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,121 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 149,593 |
| Countries with NO Military | 0 | - | 4.97 | 63,263 |
| Countries by Number of Books Published | 0 | - | 4.95 | 73,042 |
| Landlocked Countries | 0 | - | 4.99 | 424,877 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,493 |
| Countries with the Most Tanks | 0 | - | 4.91 | 108,165 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 51,080 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 75,103 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,415 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,984 |
| Buddhist Countries | 0 | - | 4.96 | 144,968 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,724 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 124,562 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,798,729 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,815 |
| Himalayan Countries | 0 | - | 4.93 | 139,899 |
| Andean Countries | 0 | - | 4.94 | 85,249 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,419 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,754 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,988 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,292 |
| Danube Countries | 0 | - | 4.97 | 72,299 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,457 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,744 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,926 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,427 |
| European Landlocked Countries | 0 | - | 4.99 | 147,500 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,147 |
| Countries with the Most Species | 0 | - | 4.99 | 103,509 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,289 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,725 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,838 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,773 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,507 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,937 |
| Countries in the Alps | 0 | - | 4.87 | 118,652 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,423 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,682 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,904 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,933 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,856 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,170 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,295 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,796 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,360 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,098 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,809 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,684 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,480 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,714 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,808 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,601 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,546 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,637 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,535 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,356 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,927 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,457 |
| Largest Countries By Category | 0 | - | 4.97 | 158,728 |
| Countries by Countries | 0 | - | 4.96 | 63,547 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,020 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,750 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,430 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,215 |
| Island Countries | 0 | - | 4.99 | 712,233 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,740 |
| Northernmost Countries | 0 | - | 4.99 | 363,605 |
| Countries of South America | 0 | - | 5.00 | 931,450 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,834 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,503 |
| "Land" Countries | 0 | - | 4.98 | 338,182 |
| Countries that Start with A | 0 | - | 4.98 | 2,173,778 |
| Countries that Start with B | 0 | - | 4.95 | 2,304,749 |
| Countries that Start with C | 0 | - | 4.96 | 1,830,084 |
| Countries that Start with D | 0 | - | 4.96 | 715,454 |
| Countries that Start with E | 0 | - | 4.95 | 1,383,942 |
| Countries that Start with G | 0 | - | 4.97 | 1,510,310 |
| Countries that Start with H | 0 | - | 4.96 | 608,893 |
| Countries that Start with I | 0 | - | 4.92 | 1,293,696 |
| Countries that Start with J | 0 | - | 4.98 | 606,295 |
| Countries that Start with K | 0 | - | 4.97 | 820,069 |
| Countries that Start with L | 0 | - | 4.98 | 1,095,909 |
| Countries that Start with N | 0 | - | 4.93 | 1,122,970 |
| Countries that Start with P | 0 | - | 4.94 | 1,221,209 |
| Countries that Start with S | 0 | - | 4.98 | 1,761,951 |
| Countries that Start with T | 0 | - | 4.90 | 1,014,227 |
| Countries that Start with U | 0 | - | 4.97 | 907,962 |
| Countries that Start with V | 0 | - | 4.98 | 611,627 |
| Countries that Start with F | 0 | - | 4.83 | 620,776 |
| Countries that Start with M | 0 | - | 4.97 | 1,387,313 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,286 |
| Orthodox Countries | 0 | - | 4.92 | 132,688 |
| Richest Island Countries | 0 | - | 4.85 | 101,135 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,695 |
| Monarchies of Europe | 0 | - | 4.90 | 98,760 |
| Monarchies of Asia | 0 | - | 4.97 | 71,451 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,874 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,235 |
| Countries with the Most Muslims | 0 | - | 4.95 | 161,070 |
| Countries with the Most Exports | 0 | - | 4.96 | 156,052 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 190,367 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,727 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,865 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 274,410 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,897 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 85,001 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,423 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 195,985 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,975 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,927 |
| Countries with Megacities | 0 | - | 4.99 | 266,666 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,635 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,987 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,936 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,100 |
| Countries by Official Language | 0 | - | 4.95 | 195,847 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,420 |
| Countries in their Native Language | 0 | - | 4.99 | 199,618 |
| Independence from Whom | 0 | - | 4.99 | 212,874 |
| Subdivisions by Country | 0 | - | 4.87 | 50,580 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,301 |
| Megadiverse Countries | 0 | - | 4.96 | 135,218 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,831 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,497 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,406 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,200 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,496 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,790 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,001 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,526 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,789 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,233 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,332 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,332 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,401 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,115 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,756 |
| Richest Countries A-Z | 0 | - | 4.91 | 103,934 |
| Large Countries with Small Economies | 0 | - | 4.95 | 81,254 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,625 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,077 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,987 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,471 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,346 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,327 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,452 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,655 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,640 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,429 |
| Widest Countries East to West | 0 | - | 4.92 | 130,368 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,576 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,157 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,484 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,003 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,900 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,396 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,474 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,874 |
| Countries with Double Letters | 0 | - | 4.96 | 96,902 |
| Countries that End in N | 0 | - | 4.94 | 171,780 |
| Countries with Five Letters | 0 | - | 4.96 | 283,533 |
| Countries with Six Letters | 0 | - | 4.94 | 214,258 |
| Countries with W | 0 | - | 4.96 | 160,818 |
| Countries with Z | 0 | - | 4.98 | 292,242 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,173 |
| Countries That End in U | 0 | - | 4.95 | 121,112 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,979 |
| Countries that End in O | 0 | - | 4.92 | 159,750 |
| Countries that End in R | 0 | - | 4.87 | 119,132 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,889 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,685 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,055 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,755 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,685 |
| Countries That End in Y | 0 | - | 4.91 | 186,047 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,353 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,183 |
| Countries that End in I | 0 | - | 4.94 | 135,267 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,515 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,006 |
| Countries That End in NIA | 0 | - | 4.92 | 109,994 |
| Countries That End in BIA | 0 | - | 4.93 | 149,511 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,436 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,702 |
| Countries That End in RIA | 0 | - | 4.93 | 127,011 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,306 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,402 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,077 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,519 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,091 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,763 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,267 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,520 |
