| Countries of the World Quiz | 0 | - | 5.00 | 47,766,363 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,891 |
| NATO Countries | 0 | - | 4.98 | 282,722 |
| EU Countries Quiz | 0 | - | 4.99 | 277,007 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,523 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,966 |
| Top Five Countries by Religion | 0 | - | 4.93 | 172,935 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 149,467 |
| Countries with NO Military | 0 | - | 4.97 | 63,003 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,977 |
| Landlocked Countries | 0 | - | 4.99 | 424,269 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,355 |
| Countries with the Most Tanks | 0 | - | 4.91 | 108,039 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,932 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 75,065 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,065 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,887 |
| Buddhist Countries | 0 | - | 4.96 | 144,901 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,580 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 124,446 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,794,942 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,535 |
| Himalayan Countries | 0 | - | 4.94 | 139,690 |
| Andean Countries | 0 | - | 4.94 | 85,143 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,320 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,571 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,897 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,177 |
| Danube Countries | 0 | - | 4.97 | 72,253 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,387 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,684 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,810 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,298 |
| European Landlocked Countries | 0 | - | 4.99 | 147,431 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,047 |
| Countries with the Most Species | 0 | - | 4.99 | 103,457 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,178 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,701 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,813 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,728 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,456 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,880 |
| Countries in the Alps | 0 | - | 4.87 | 118,544 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,227 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,559 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,844 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,855 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,777 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,117 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,989 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,712 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,330 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,048 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,782 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,650 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,427 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,666 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,757 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,455 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,504 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,466 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,457 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,111 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,781 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,412 |
| Largest Countries By Category | 0 | - | 4.97 | 158,604 |
| Countries by Countries | 0 | - | 4.96 | 63,485 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,958 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,845 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,243 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,808 |
| Island Countries | 0 | - | 4.99 | 711,978 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,013 |
| Northernmost Countries | 0 | - | 4.99 | 363,318 |
| Countries of South America | 0 | - | 5.00 | 930,581 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,989 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,810 |
| "Land" Countries | 0 | - | 4.98 | 338,008 |
| Countries that Start with A | 0 | - | 4.98 | 2,172,379 |
| Countries that Start with B | 0 | - | 4.95 | 2,303,393 |
| Countries that Start with C | 0 | - | 4.96 | 1,829,053 |
| Countries that Start with D | 0 | - | 4.96 | 714,697 |
| Countries that Start with E | 0 | - | 4.95 | 1,383,078 |
| Countries that Start with G | 0 | - | 4.97 | 1,509,411 |
| Countries that Start with H | 0 | - | 4.96 | 608,357 |
| Countries that Start with I | 0 | - | 4.92 | 1,293,009 |
| Countries that Start with J | 0 | - | 4.98 | 605,819 |
| Countries that Start with K | 0 | - | 4.97 | 819,509 |
| Countries that Start with L | 0 | - | 4.98 | 1,095,253 |
| Countries that Start with N | 0 | - | 4.93 | 1,122,275 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,549 |
| Countries that Start with S | 0 | - | 4.98 | 1,761,075 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,692 |
| Countries that Start with U | 0 | - | 4.97 | 907,546 |
| Countries that Start with V | 0 | - | 4.98 | 611,326 |
| Countries that Start with F | 0 | - | 4.83 | 620,353 |
| Countries that Start with M | 0 | - | 4.97 | 1,386,613 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,187 |
| Orthodox Countries | 0 | - | 4.92 | 132,615 |
| Richest Island Countries | 0 | - | 4.85 | 101,062 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,186 |
| Monarchies of Europe | 0 | - | 4.90 | 98,680 |
| Monarchies of Asia | 0 | - | 4.97 | 71,408 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,725 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,203 |
| Countries with the Most Muslims | 0 | - | 4.95 | 160,991 |
| Countries with the Most Exports | 0 | - | 4.96 | 155,948 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 190,284 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,684 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,808 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 274,057 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,813 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,937 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,330 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 195,880 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,898 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,724 |
| Countries with Megacities | 0 | - | 4.99 | 266,246 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,446 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,864 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,742 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,977 |
| Countries by Official Language | 0 | - | 4.95 | 195,744 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,260 |
| Countries in their Native Language | 0 | - | 4.99 | 199,518 |
| Independence from Whom | 0 | - | 4.99 | 212,699 |
| Subdivisions by Country | 0 | - | 4.87 | 50,553 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,177 |
| Megadiverse Countries | 0 | - | 4.96 | 135,181 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,738 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,474 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,371 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,178 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,416 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,737 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,857 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,496 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,769 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,219 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,152 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,296 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,361 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,083 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,654 |
| Richest Countries A-Z | 0 | - | 4.91 | 103,799 |
| Large Countries with Small Economies | 0 | - | 4.95 | 81,207 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,560 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,943 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,926 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,411 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,172 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,269 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,388 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,585 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,612 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,923 |
| Widest Countries East to West | 0 | - | 4.92 | 130,290 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,555 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,082 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,455 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,967 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,844 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,345 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,460 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,860 |
| Countries with Double Letters | 0 | - | 4.96 | 96,771 |
| Countries that End in N | 0 | - | 4.95 | 171,656 |
| Countries with Five Letters | 0 | - | 4.96 | 283,348 |
| Countries with Six Letters | 0 | - | 4.94 | 214,114 |
| Countries with W | 0 | - | 4.96 | 160,722 |
| Countries with Z | 0 | - | 4.98 | 292,088 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,069 |
| Countries That End in U | 0 | - | 4.95 | 121,063 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,870 |
| Countries that End in O | 0 | - | 4.92 | 159,715 |
| Countries that End in R | 0 | - | 4.87 | 119,101 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,849 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,553 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,983 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,697 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,626 |
| Countries That End in Y | 0 | - | 4.91 | 186,018 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,262 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,120 |
| Countries that End in I | 0 | - | 4.94 | 135,244 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,438 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,964 |
| Countries That End in NIA | 0 | - | 4.92 | 109,950 |
| Countries That End in BIA | 0 | - | 4.93 | 149,441 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,375 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,648 |
| Countries That End in RIA | 0 | - | 4.93 | 126,969 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,259 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,212 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,009 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,443 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,007 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,723 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,223 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,505 |
