| Countries of the World Quiz | 0 | - | 5.00 | 46,924,215 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,569 |
| NATO Countries | 0 | - | 4.98 | 275,781 |
| EU Countries Quiz | 0 | - | 4.99 | 269,966 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,965 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,358 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,072 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,773 |
| Countries with NO Military | 0 | - | 4.97 | 61,179 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,912 |
| Landlocked Countries | 0 | - | 4.99 | 413,665 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,474 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,278 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,755 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,146 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,049 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,936 |
| Buddhist Countries | 0 | - | 4.96 | 142,960 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,891 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,103 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,717,273 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,610 |
| Himalayan Countries | 0 | - | 4.95 | 135,378 |
| Andean Countries | 0 | - | 4.94 | 82,831 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,223 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,222 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,909 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,615 |
| Danube Countries | 0 | - | 4.97 | 71,084 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,769 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,540 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,495 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,409 |
| European Landlocked Countries | 0 | - | 4.99 | 145,759 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,218 |
| Countries with the Most Species | 0 | - | 4.99 | 95,242 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,353 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,200 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,371 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,959 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,579 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,953 |
| Countries in the Alps | 0 | - | 4.86 | 116,827 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,572 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,264 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,015 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,426 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,168 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,006 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,583 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,760 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,309 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,064 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,197 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,045 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,454 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,753 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,756 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,073 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,649 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,255 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,774 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,324 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,682 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,605 |
| Largest Countries By Category | 0 | - | 4.97 | 156,765 |
| Countries by Countries | 0 | - | 4.96 | 62,259 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,774 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,029 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,135 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,873 |
| Island Countries | 0 | - | 4.99 | 707,644 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,510 |
| Northernmost Countries | 0 | - | 4.99 | 357,753 |
| Countries of South America | 0 | - | 5.00 | 914,859 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,578 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,848,536 |
| "Land" Countries | 0 | - | 4.98 | 333,666 |
| Countries that Start with A | 0 | - | 4.97 | 2,146,965 |
| Countries that Start with B | 0 | - | 4.95 | 2,279,978 |
| Countries that Start with C | 0 | - | 4.96 | 1,810,412 |
| Countries that Start with D | 0 | - | 4.96 | 701,609 |
| Countries that Start with E | 0 | - | 4.95 | 1,367,590 |
| Countries that Start with G | 0 | - | 4.97 | 1,492,870 |
| Countries that Start with H | 0 | - | 4.96 | 598,016 |
| Countries that Start with I | 0 | - | 4.92 | 1,280,326 |
| Countries that Start with J | 0 | - | 4.98 | 596,071 |
| Countries that Start with K | 0 | - | 4.97 | 809,448 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,937 |
| Countries that Start with N | 0 | - | 4.93 | 1,109,795 |
| Countries that Start with P | 0 | - | 4.94 | 1,208,612 |
| Countries that Start with S | 0 | - | 4.98 | 1,744,592 |
| Countries that Start with T | 0 | - | 4.90 | 1,004,257 |
| Countries that Start with U | 0 | - | 4.97 | 899,956 |
| Countries that Start with V | 0 | - | 4.98 | 605,125 |
| Countries that Start with F | 0 | - | 4.83 | 612,224 |
| Countries that Start with M | 0 | - | 4.97 | 1,373,427 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,056 |
| Orthodox Countries | 0 | - | 4.91 | 130,399 |
| Richest Island Countries | 0 | - | 4.84 | 99,525 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,459 |
| Monarchies of Europe | 0 | - | 4.90 | 97,335 |
| Monarchies of Asia | 0 | - | 4.97 | 70,611 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,462 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,434 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,287 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,176 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,505 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,558 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,654 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 262,141 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 102,957 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 83,722 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,610 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 193,921 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 117,477 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,260 |
| Countries with Megacities | 0 | - | 4.99 | 246,970 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,149 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,991 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,564 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,885 |
| Countries by Official Language | 0 | - | 4.95 | 192,777 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,144 |
| Countries in their Native Language | 0 | - | 4.99 | 196,644 |
| Independence from Whom | 0 | - | 4.99 | 209,703 |
| Subdivisions by Country | 0 | - | 4.86 | 50,068 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,762 |
| Megadiverse Countries | 0 | - | 4.97 | 133,906 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,809 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,921 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,429 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,862 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,668 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,007 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,031 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,150 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,215 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,746 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,578 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,422 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,497 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,505 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,093 |
| Richest Countries A-Z | 0 | - | 4.92 | 101,866 |
| Large Countries with Small Economies | 0 | - | 4.94 | 80,335 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,333 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,361 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,996 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,956 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,782 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,859 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,065 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,280 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,951 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,338 |
| Widest Countries East to West | 0 | - | 4.92 | 128,608 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,218 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,220 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,570 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,691 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,636 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,048 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,051 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,584 |
| Countries with Double Letters | 0 | - | 4.97 | 93,396 |
| Countries that End in N | 0 | - | 4.94 | 156,888 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,694 |
| Countries with Six Letters | 0 | - | 4.93 | 210,373 |
| Countries with W | 0 | - | 4.97 | 158,233 |
| Countries with Z | 0 | - | 4.98 | 287,886 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,557 |
| Countries That End in U | 0 | - | 4.95 | 119,519 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,564 |
| Countries that End in O | 0 | - | 4.92 | 158,558 |
| Countries that End in R | 0 | - | 4.87 | 118,275 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,860 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,038 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,337 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,499 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,024 |
| Countries That End in Y | 0 | - | 4.90 | 185,207 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,382 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,693 |
| Countries that End in I | 0 | - | 4.94 | 134,414 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,202 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,196 |
| Countries That End in NIA | 0 | - | 4.92 | 109,012 |
| Countries That End in BIA | 0 | - | 4.92 | 147,721 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,067 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,487 |
| Countries That End in RIA | 0 | - | 4.93 | 126,084 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,012 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,202 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,526 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,890 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,361 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,928 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,126 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,648 |
