| Countries of the World Quiz | 0 | - | 5.00 | 47,334,418 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,255 |
| NATO Countries | 0 | - | 4.98 | 279,357 |
| EU Countries Quiz | 0 | - | 4.99 | 272,950 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,484 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,949 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,788 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 148,014 |
| Countries with NO Military | 0 | - | 4.97 | 61,975 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,416 |
| Landlocked Countries | 0 | - | 4.99 | 418,940 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,811 |
| Countries with the Most Tanks | 0 | - | 4.91 | 107,150 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,368 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,666 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,867 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,909 |
| Buddhist Countries | 0 | - | 4.96 | 143,930 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,800 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 123,209 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,756,916 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,000 |
| Himalayan Countries | 0 | - | 4.94 | 137,425 |
| Andean Countries | 0 | - | 4.95 | 83,940 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,231 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,656 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,832 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,352 |
| Danube Countries | 0 | - | 4.97 | 71,666 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,553 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,057 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,656 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,735 |
| European Landlocked Countries | 0 | - | 4.99 | 146,778 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,141 |
| Countries with the Most Species | 0 | - | 4.99 | 102,908 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,267 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,432 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,588 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,303 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,994 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,365 |
| Countries in the Alps | 0 | - | 4.87 | 117,688 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,134 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,366 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,422 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,982 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,093 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,576 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,286 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,187 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,970 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,552 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,479 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,337 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,926 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,188 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,206 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,188 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,063 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,572 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,532 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,379 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,230 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,999 |
| Largest Countries By Category | 0 | - | 4.97 | 157,637 |
| Countries by Countries | 0 | - | 4.96 | 62,838 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,323 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,001 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,610 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,104 |
| Island Countries | 0 | - | 4.99 | 709,758 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,048 |
| Northernmost Countries | 0 | - | 4.99 | 360,468 |
| Countries of South America | 0 | - | 5.00 | 922,906 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,022 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,364 |
| "Land" Countries | 0 | - | 4.98 | 335,793 |
| Countries that Start with A | 0 | - | 4.98 | 2,159,044 |
| Countries that Start with B | 0 | - | 4.95 | 2,291,026 |
| Countries that Start with C | 0 | - | 4.96 | 1,819,318 |
| Countries that Start with D | 0 | - | 4.96 | 707,703 |
| Countries that Start with E | 0 | - | 4.95 | 1,374,913 |
| Countries that Start with G | 0 | - | 4.97 | 1,500,586 |
| Countries that Start with H | 0 | - | 4.96 | 603,146 |
| Countries that Start with I | 0 | - | 4.92 | 1,286,229 |
| Countries that Start with J | 0 | - | 4.98 | 600,990 |
| Countries that Start with K | 0 | - | 4.97 | 814,202 |
| Countries that Start with L | 0 | - | 4.98 | 1,088,960 |
| Countries that Start with N | 0 | - | 4.93 | 1,115,904 |
| Countries that Start with P | 0 | - | 4.94 | 1,214,417 |
| Countries that Start with S | 0 | - | 4.98 | 1,752,483 |
| Countries that Start with T | 0 | - | 4.90 | 1,008,535 |
| Countries that Start with U | 0 | - | 4.97 | 903,407 |
| Countries that Start with V | 0 | - | 4.98 | 608,448 |
| Countries that Start with F | 0 | - | 4.83 | 616,345 |
| Countries that Start with M | 0 | - | 4.97 | 1,379,705 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,114 |
| Orthodox Countries | 0 | - | 4.92 | 131,333 |
| Richest Island Countries | 0 | - | 4.84 | 100,311 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,713 |
| Monarchies of Europe | 0 | - | 4.90 | 97,974 |
| Monarchies of Asia | 0 | - | 4.97 | 70,989 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,551 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,781 |
| Countries with the Most Muslims | 0 | - | 4.95 | 160,165 |
| Countries with the Most Exports | 0 | - | 4.96 | 155,116 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 189,436 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,289 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,284 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 270,422 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,059 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,370 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,488 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,927 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,174 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,019 |
| Countries with Megacities | 0 | - | 4.99 | 259,970 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,894 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,991 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,171 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,001 |
| Countries by Official Language | 0 | - | 4.95 | 194,641 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,533 |
| Countries in their Native Language | 0 | - | 4.99 | 198,186 |
| Independence from Whom | 0 | - | 4.99 | 211,315 |
| Subdivisions by Country | 0 | - | 4.86 | 50,287 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,708 |
| Megadiverse Countries | 0 | - | 4.96 | 134,768 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,542 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,185 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,755 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,018 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,714 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,381 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,979 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,844 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,487 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,988 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,969 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,717 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,995 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,774 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,954 |
| Richest Countries A-Z | 0 | - | 4.91 | 102,773 |
| Large Countries with Small Economies | 0 | - | 4.95 | 80,775 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,034 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,504 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,928 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,639 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,325 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,519 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,672 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,827 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,260 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,285 |
| Widest Countries East to West | 0 | - | 4.92 | 129,378 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,382 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,960 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,994 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,510 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,221 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,548 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,232 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,727 |
| Countries with Double Letters | 0 | - | 4.97 | 95,093 |
| Countries that End in N | 0 | - | 4.95 | 169,996 |
| Countries with Five Letters | 0 | - | 4.96 | 280,226 |
| Countries with Six Letters | 0 | - | 4.94 | 212,485 |
| Countries with W | 0 | - | 4.97 | 159,522 |
| Countries with Z | 0 | - | 4.98 | 289,804 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,752 |
| Countries That End in U | 0 | - | 4.95 | 120,413 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,755 |
| Countries that End in O | 0 | - | 4.92 | 159,193 |
| Countries that End in R | 0 | - | 4.87 | 118,734 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,513 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,333 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,108 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,082 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,665 |
| Countries That End in Y | 0 | - | 4.90 | 185,647 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,224 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,424 |
| Countries that End in I | 0 | - | 4.94 | 134,869 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,080 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,579 |
| Countries That End in NIA | 0 | - | 4.92 | 109,517 |
| Countries That End in BIA | 0 | - | 4.93 | 148,842 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,716 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,058 |
| Countries That End in RIA | 0 | - | 4.93 | 126,539 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,631 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,707 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,230 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,588 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,113 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,325 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,687 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,245 |
