| Countries of the World Quiz | 0 | - | 5.00 | 47,901,236 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,873 |
| NATO Countries | 0 | - | 4.98 | 283,569 |
| EU Countries Quiz | 0 | - | 4.99 | 278,092 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,521 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,133 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,495 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 149,823 |
| Countries with NO Military | 0 | - | 4.97 | 63,459 |
| Countries by Number of Books Published | 0 | - | 4.95 | 73,120 |
| Countries with the Top Chess Players | 0 | - | 4.54 | 76,221 |
| Landlocked Countries | 0 | - | 4.99 | 426,188 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,744 |
| Countries with the Most Tanks | 0 | - | 4.91 | 108,338 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 51,182 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 75,174 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,909 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 89,183 |
| Buddhist Countries | 0 | - | 4.96 | 145,138 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 337,011 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 124,734 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,806,351 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,421 |
| Himalayan Countries | 0 | - | 4.93 | 140,373 |
| Andean Countries | 0 | - | 4.94 | 85,536 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,689 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,112 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,259 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,493 |
| Danube Countries | 0 | - | 4.97 | 72,438 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,642 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,871 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,200 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,673 |
| European Landlocked Countries | 0 | - | 4.99 | 147,640 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,349 |
| Countries with the Most Species | 0 | - | 4.99 | 103,588 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,450 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,785 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,898 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,860 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,597 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,040 |
| Countries in the Alps | 0 | - | 4.87 | 118,825 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,709 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,937 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,985 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,051 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,994 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,288 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,437 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,888 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,446 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,209 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,898 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,758 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,579 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,823 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,914 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,917 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,637 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 74,547 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,713 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,847 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,223 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,532 |
| Largest Countries By Category | 0 | - | 4.97 | 158,904 |
| Countries by Countries | 0 | - | 4.96 | 63,670 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,129 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,703 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,770 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,856 |
| Island Countries | 0 | - | 4.99 | 712,667 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,086 |
| Northernmost Countries | 0 | - | 4.99 | 364,165 |
| Countries of South America | 0 | - | 5.00 | 933,082 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,924 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,890,247 |
| "Land" Countries | 0 | - | 4.98 | 338,461 |
| Countries that Start with A | 0 | - | 4.98 | 2,176,300 |
| Countries that Start with B | 0 | - | 4.95 | 2,307,016 |
| Countries that Start with C | 0 | - | 4.96 | 1,831,890 |
| Countries that Start with D | 0 | - | 4.96 | 716,729 |
| Countries that Start with E | 0 | - | 4.95 | 1,385,443 |
| Countries that Start with G | 0 | - | 4.97 | 1,511,891 |
| Countries that Start with H | 0 | - | 4.96 | 609,793 |
| Countries that Start with I | 0 | - | 4.92 | 1,294,846 |
| Countries that Start with J | 0 | - | 4.98 | 607,177 |
| Countries that Start with K | 0 | - | 4.97 | 820,973 |
| Countries that Start with L | 0 | - | 4.98 | 1,097,085 |
| Countries that Start with N | 0 | - | 4.93 | 1,124,157 |
| Countries that Start with P | 0 | - | 4.94 | 1,222,307 |
| Countries that Start with S | 0 | - | 4.98 | 1,763,515 |
| Countries that Start with T | 0 | - | 4.90 | 1,015,109 |
| Countries that Start with U | 0 | - | 4.97 | 908,639 |
| Countries that Start with V | 0 | - | 4.98 | 612,133 |
| Countries that Start with F | 0 | - | 4.83 | 621,466 |
| Countries that Start with M | 0 | - | 4.97 | 1,388,557 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,469 |
| Orthodox Countries | 0 | - | 4.92 | 132,836 |
| Richest Island Countries | 0 | - | 4.85 | 101,249 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,394,610 |
| Monarchies of Europe | 0 | - | 4.90 | 98,902 |
| Monarchies of Asia | 0 | - | 4.97 | 71,520 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,278 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,155 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,298 |
| Countries with the Most Muslims | 0 | - | 4.95 | 161,229 |
| Countries with the Most Exports | 0 | - | 4.96 | 156,205 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 190,509 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,798 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,951 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 275,005 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 105,013 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 85,111 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,583 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 196,182 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 119,126 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,247 |
| Countries with Megacities | 0 | - | 4.99 | 267,302 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,926 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,184 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,249 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,300 |
| Countries by Official Language | 0 | - | 4.95 | 196,057 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,701 |
| Countries in their Native Language | 0 | - | 4.99 | 199,789 |
| Independence from Whom | 0 | - | 4.99 | 213,144 |
| Subdivisions by Country | 0 | - | 4.87 | 50,632 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,501 |
| Megadiverse Countries | 0 | - | 4.96 | 135,298 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,989 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,548 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,725 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,233 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,311 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,871 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,149 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,578 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,096 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,263 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,592 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,397 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,455 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,160 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,596 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,865 |
| Richest Countries A-Z | 0 | - | 4.91 | 104,087 |
| Large Countries with Small Economies | 0 | - | 4.95 | 81,316 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,737 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,319 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,127 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,600 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,660 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,470 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,572 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,774 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,714 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,790 |
| Widest Countries East to West | 0 | - | 4.92 | 130,698 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,606 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,283 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,526 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,080 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,010 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,506 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,512 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,900 |
| Countries with Double Letters | 0 | - | 4.96 | 97,149 |
| Countries that End in N | 0 | - | 4.95 | 172,021 |
| Countries with Five Letters | 0 | - | 4.96 | 284,048 |
| Countries with Six Letters | 0 | - | 4.94 | 214,562 |
| Countries with W | 0 | - | 4.96 | 161,007 |
| Countries with Z | 0 | - | 4.98 | 292,541 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,339 |
| Countries That End in U | 0 | - | 4.95 | 121,220 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,162 |
| Countries that End in O | 0 | - | 4.92 | 160,247 |
| Countries that End in R | 0 | - | 4.87 | 119,200 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,965 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,914 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,194 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,863 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,785 |
| Countries That End in Y | 0 | - | 4.91 | 186,104 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,504 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,304 |
| Countries that End in I | 0 | - | 4.94 | 135,339 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,668 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,080 |
| Countries That End in NIA | 0 | - | 4.92 | 110,087 |
| Countries That End in BIA | 0 | - | 4.93 | 149,608 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,578 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,795 |
| Countries That End in RIA | 0 | - | 4.93 | 127,078 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,421 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,666 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,228 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,671 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,218 |
