| Countries of the World Quiz | 0 | - | 5.00 | 46,936,537 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,647 |
| NATO Countries | 0 | - | 4.98 | 275,914 |
| EU Countries Quiz | 0 | - | 4.99 | 270,065 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,059 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,476 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,120 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,809 |
| Countries with NO Military | 0 | - | 4.97 | 61,206 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,927 |
| Landlocked Countries | 0 | - | 4.99 | 413,796 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,509 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,311 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,768 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,157 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,128 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,956 |
| Buddhist Countries | 0 | - | 4.96 | 142,985 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,949 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,137 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,718,728 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,667 |
| Himalayan Countries | 0 | - | 4.95 | 135,429 |
| Andean Countries | 0 | - | 4.94 | 82,854 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,249 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,249 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,934 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,629 |
| Danube Countries | 0 | - | 4.97 | 71,097 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,782 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,551 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,523 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,440 |
| European Landlocked Countries | 0 | - | 4.99 | 145,774 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,238 |
| Countries with the Most Species | 0 | - | 4.99 | 95,252 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,379 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,204 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,374 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,968 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,583 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,963 |
| Countries in the Alps | 0 | - | 4.86 | 116,854 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,585 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,286 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,023 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,437 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,191 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,021 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,599 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,774 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,376 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,079 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,201 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,053 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,461 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,766 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,768 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,109 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,662 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,265 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,793 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,401 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,733 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,613 |
| Largest Countries By Category | 0 | - | 4.97 | 156,792 |
| Countries by Countries | 0 | - | 4.96 | 62,271 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,788 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,293 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,176 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,947 |
| Island Countries | 0 | - | 4.99 | 707,702 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,711 |
| Northernmost Countries | 0 | - | 4.99 | 357,836 |
| Countries of South America | 0 | - | 5.00 | 915,145 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,932 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,849,162 |
| "Land" Countries | 0 | - | 4.98 | 333,703 |
| Countries that Start with A | 0 | - | 4.97 | 2,147,316 |
| Countries that Start with B | 0 | - | 4.95 | 2,280,289 |
| Countries that Start with C | 0 | - | 4.96 | 1,810,671 |
| Countries that Start with D | 0 | - | 4.96 | 701,794 |
| Countries that Start with E | 0 | - | 4.95 | 1,367,801 |
| Countries that Start with G | 0 | - | 4.97 | 1,493,128 |
| Countries that Start with H | 0 | - | 4.96 | 598,162 |
| Countries that Start with I | 0 | - | 4.92 | 1,280,505 |
| Countries that Start with J | 0 | - | 4.98 | 596,213 |
| Countries that Start with K | 0 | - | 4.97 | 809,568 |
| Countries that Start with L | 0 | - | 4.98 | 1,083,116 |
| Countries that Start with N | 0 | - | 4.93 | 1,109,980 |
| Countries that Start with P | 0 | - | 4.94 | 1,208,771 |
| Countries that Start with S | 0 | - | 4.98 | 1,744,808 |
| Countries that Start with T | 0 | - | 4.90 | 1,004,374 |
| Countries that Start with U | 0 | - | 4.97 | 900,044 |
| Countries that Start with V | 0 | - | 4.98 | 605,205 |
| Countries that Start with F | 0 | - | 4.83 | 612,350 |
| Countries that Start with M | 0 | - | 4.97 | 1,373,594 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,080 |
| Orthodox Countries | 0 | - | 4.91 | 130,427 |
| Richest Island Countries | 0 | - | 4.84 | 99,551 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,829 |
| Monarchies of Europe | 0 | - | 4.90 | 97,353 |
| Monarchies of Asia | 0 | - | 4.97 | 70,615 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,497 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,441 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,303 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,206 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,531 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,567 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,678 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 262,212 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 102,982 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 83,743 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,626 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 193,953 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 117,501 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,396 |
| Countries with Megacities | 0 | - | 4.99 | 247,175 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,241 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,058 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,672 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,980 |
| Countries by Official Language | 0 | - | 4.95 | 192,809 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,179 |
| Countries in their Native Language | 0 | - | 4.99 | 196,678 |
| Independence from Whom | 0 | - | 4.99 | 209,754 |
| Subdivisions by Country | 0 | - | 4.86 | 50,075 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,801 |
| Megadiverse Countries | 0 | - | 4.97 | 133,917 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,836 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,924 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,432 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,865 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,692 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,020 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,063 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,163 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,221 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,752 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,622 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,437 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,508 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,510 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,113 |
| Richest Countries A-Z | 0 | - | 4.92 | 101,896 |
| Large Countries with Small Economies | 0 | - | 4.94 | 80,352 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,352 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,395 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,016 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,975 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,826 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,877 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,084 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,295 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,958 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,350 |
| Widest Countries East to West | 0 | - | 4.92 | 128,622 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,219 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,252 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,580 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,702 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,654 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,066 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,054 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,589 |
| Countries with Double Letters | 0 | - | 4.97 | 93,425 |
| Countries that End in N | 0 | - | 4.94 | 156,919 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,725 |
| Countries with Six Letters | 0 | - | 4.93 | 210,400 |
| Countries with W | 0 | - | 4.97 | 158,253 |
| Countries with Z | 0 | - | 4.98 | 287,917 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,579 |
| Countries That End in U | 0 | - | 4.95 | 119,530 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,607 |
| Countries that End in O | 0 | - | 4.92 | 158,570 |
| Countries that End in R | 0 | - | 4.87 | 118,283 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,866 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,095 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,361 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,514 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,051 |
| Countries That End in Y | 0 | - | 4.90 | 185,216 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,408 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,707 |
| Countries that End in I | 0 | - | 4.94 | 134,430 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,232 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,209 |
| Countries That End in NIA | 0 | - | 4.92 | 109,017 |
| Countries That End in BIA | 0 | - | 4.92 | 147,732 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,092 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,502 |
| Countries That End in RIA | 0 | - | 4.93 | 126,097 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,024 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,228 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,541 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,903 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,387 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,942 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,142 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,668 |
