| Countries of the World Quiz | 0 | - | 5.00 | 47,410,648 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,909 |
| NATO Countries | 0 | - | 4.98 | 279,924 |
| EU Countries Quiz | 0 | - | 4.99 | 273,591 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,017 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,682 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,133 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 148,261 |
| Countries with NO Military | 0 | - | 4.97 | 62,160 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,510 |
| Landlocked Countries | 0 | - | 4.99 | 419,869 |
| Countries with the Most Christians | 0 | - | 4.92 | 143,055 |
| Countries with the Most Tanks | 0 | - | 4.91 | 107,315 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,482 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,738 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,380 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,092 |
| Buddhist Countries | 0 | - | 4.96 | 144,251 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,246 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 123,433 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,763,395 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,404 |
| Himalayan Countries | 0 | - | 4.95 | 137,823 |
| Andean Countries | 0 | - | 4.95 | 84,128 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,356 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,915 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,994 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,464 |
| Danube Countries | 0 | - | 4.97 | 71,758 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,687 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,153 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,840 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,915 |
| European Landlocked Countries | 0 | - | 4.99 | 146,881 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,264 |
| Countries with the Most Species | 0 | - | 4.99 | 103,025 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,429 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,462 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,634 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,387 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,061 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,460 |
| Countries in the Alps | 0 | - | 4.87 | 117,859 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,377 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,579 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,479 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,366 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,226 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,792 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,391 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,271 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,034 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,641 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,532 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,381 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,004 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,286 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,296 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,410 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,128 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,634 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,692 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,848 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,491 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,052 |
| Largest Countries By Category | 0 | - | 4.97 | 157,812 |
| Countries by Countries | 0 | - | 4.97 | 62,940 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,440 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,815 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,864 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,877 |
| Island Countries | 0 | - | 4.99 | 710,153 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,047,133 |
| Northernmost Countries | 0 | - | 4.99 | 360,940 |
| Countries of South America | 0 | - | 5.00 | 924,244 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,029 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,869,832 |
| "Land" Countries | 0 | - | 4.98 | 336,041 |
| Countries that Start with A | 0 | - | 4.98 | 2,161,296 |
| Countries that Start with B | 0 | - | 4.95 | 2,293,077 |
| Countries that Start with C | 0 | - | 4.96 | 1,820,980 |
| Countries that Start with D | 0 | - | 4.96 | 708,892 |
| Countries that Start with E | 0 | - | 4.95 | 1,376,342 |
| Countries that Start with G | 0 | - | 4.97 | 1,502,355 |
| Countries that Start with H | 0 | - | 4.96 | 604,175 |
| Countries that Start with I | 0 | - | 4.92 | 1,287,376 |
| Countries that Start with J | 0 | - | 4.98 | 601,919 |
| Countries that Start with K | 0 | - | 4.97 | 815,230 |
| Countries that Start with L | 0 | - | 4.98 | 1,090,051 |
| Countries that Start with N | 0 | - | 4.93 | 1,117,038 |
| Countries that Start with P | 0 | - | 4.94 | 1,215,488 |
| Countries that Start with S | 0 | - | 4.98 | 1,753,875 |
| Countries that Start with T | 0 | - | 4.90 | 1,009,297 |
| Countries that Start with U | 0 | - | 4.97 | 904,079 |
| Countries that Start with V | 0 | - | 4.98 | 609,035 |
| Countries that Start with F | 0 | - | 4.83 | 617,147 |
| Countries that Start with M | 0 | - | 4.97 | 1,380,884 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,295 |
| Orthodox Countries | 0 | - | 4.92 | 131,621 |
| Richest Island Countries | 0 | - | 4.84 | 100,455 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,378,058 |
| Monarchies of Europe | 0 | - | 4.90 | 98,078 |
| Monarchies of Asia | 0 | - | 4.97 | 71,058 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,722 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,847 |
| Countries with the Most Muslims | 0 | - | 4.95 | 160,305 |
| Countries with the Most Exports | 0 | - | 4.96 | 155,310 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 189,603 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,366 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,388 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 271,131 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,212 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,482 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,636 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 195,098 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,293 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,303 |
| Countries with Megacities | 0 | - | 4.99 | 262,680 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,138 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,141 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,438 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,189 |
| Countries by Official Language | 0 | - | 4.95 | 194,828 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,782 |
| Countries in their Native Language | 0 | - | 4.99 | 198,371 |
| Independence from Whom | 0 | - | 4.99 | 211,573 |
| Subdivisions by Country | 0 | - | 4.86 | 50,334 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,878 |
| Megadiverse Countries | 0 | - | 4.96 | 134,836 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,696 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,226 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,803 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,043 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,838 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,446 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,114 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,901 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,535 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,024 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,222 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,769 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,053 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,837 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,114 |
| Richest Countries A-Z | 0 | - | 4.91 | 102,980 |
| Large Countries with Small Economies | 0 | - | 4.95 | 80,862 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,137 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,683 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,038 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,768 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,623 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,638 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,781 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,914 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,328 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,371 |
| Widest Countries East to West | 0 | - | 4.92 | 129,452 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,406 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,087 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,036 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,594 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,336 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,653 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,286 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,748 |
| Countries with Double Letters | 0 | - | 4.97 | 95,289 |
| Countries that End in N | 0 | - | 4.95 | 170,300 |
| Countries with Five Letters | 0 | - | 4.96 | 281,078 |
| Countries with Six Letters | 0 | - | 4.94 | 212,723 |
| Countries with W | 0 | - | 4.97 | 159,652 |
| Countries with Z | 0 | - | 4.98 | 290,516 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,906 |
| Countries That End in U | 0 | - | 4.95 | 120,485 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,917 |
| Countries that End in O | 0 | - | 4.92 | 159,264 |
| Countries that End in R | 0 | - | 4.87 | 118,779 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,553 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,517 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,273 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,174 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,786 |
| Countries That End in Y | 0 | - | 4.91 | 185,694 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,448 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,540 |
| Countries that End in I | 0 | - | 4.94 | 134,924 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,652 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,638 |
| Countries That End in NIA | 0 | - | 4.92 | 109,583 |
| Countries That End in BIA | 0 | - | 4.93 | 148,932 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,833 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,160 |
| Countries That End in RIA | 0 | - | 4.93 | 126,599 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,739 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,966 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,350 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,737 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,266 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,392 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,752 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,334 |
