| Countries of the World Quiz | 0 | - | 5.00 | 47,290,406 |
| Majority Muslim Countries | 0 | - | 4.98 | 372,883 |
| NATO Countries | 0 | - | 4.98 | 279,012 |
| EU Countries Quiz | 0 | - | 4.99 | 272,616 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,231 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,587 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,581 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,850 |
| Countries with NO Military | 0 | - | 4.97 | 61,879 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,351 |
| Landlocked Countries | 0 | - | 4.99 | 418,263 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,676 |
| Countries with the Most Tanks | 0 | - | 4.91 | 107,050 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,296 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,602 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,524 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,792 |
| Buddhist Countries | 0 | - | 4.96 | 143,638 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,487 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 123,083 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,752,976 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,648 |
| Himalayan Countries | 0 | - | 4.94 | 137,125 |
| Andean Countries | 0 | - | 4.95 | 83,779 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,027 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,403 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,701 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,258 |
| Danube Countries | 0 | - | 4.97 | 71,585 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,452 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,988 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,524 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,583 |
| European Landlocked Countries | 0 | - | 4.99 | 146,698 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,025 |
| Countries with the Most Species | 0 | - | 4.99 | 102,820 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,165 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,401 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,558 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,263 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,933 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,312 |
| Countries in the Alps | 0 | - | 4.87 | 117,590 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,069 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,254 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,370 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,914 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,022 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,398 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,194 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,132 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,929 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,494 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,443 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,302 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,877 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,140 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,161 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,043 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,014 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,537 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,430 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,002 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,074 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,947 |
| Largest Countries By Category | 0 | - | 4.97 | 157,539 |
| Countries by Countries | 0 | - | 4.96 | 62,779 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,263 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,360 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,421 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,774 |
| Island Countries | 0 | - | 4.99 | 709,484 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,354 |
| Northernmost Countries | 0 | - | 4.99 | 360,191 |
| Countries of South America | 0 | - | 5.00 | 922,125 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,973 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,864,528 |
| "Land" Countries | 0 | - | 4.98 | 335,653 |
| Countries that Start with A | 0 | - | 4.98 | 2,157,704 |
| Countries that Start with B | 0 | - | 4.95 | 2,289,705 |
| Countries that Start with C | 0 | - | 4.96 | 1,818,252 |
| Countries that Start with D | 0 | - | 4.96 | 706,968 |
| Countries that Start with E | 0 | - | 4.95 | 1,374,089 |
| Countries that Start with G | 0 | - | 4.97 | 1,499,725 |
| Countries that Start with H | 0 | - | 4.96 | 602,537 |
| Countries that Start with I | 0 | - | 4.92 | 1,285,544 |
| Countries that Start with J | 0 | - | 4.98 | 600,420 |
| Countries that Start with K | 0 | - | 4.97 | 813,519 |
| Countries that Start with L | 0 | - | 4.98 | 1,088,304 |
| Countries that Start with N | 0 | - | 4.93 | 1,115,253 |
| Countries that Start with P | 0 | - | 4.94 | 1,213,733 |
| Countries that Start with S | 0 | - | 4.98 | 1,751,566 |
| Countries that Start with T | 0 | - | 4.90 | 1,008,051 |
| Countries that Start with U | 0 | - | 4.97 | 902,989 |
| Countries that Start with V | 0 | - | 4.98 | 608,092 |
| Countries that Start with F | 0 | - | 4.83 | 615,893 |
| Countries that Start with M | 0 | - | 4.97 | 1,378,945 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,989 |
| Orthodox Countries | 0 | - | 4.92 | 131,205 |
| Richest Island Countries | 0 | - | 4.84 | 100,240 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,293 |
| Monarchies of Europe | 0 | - | 4.90 | 97,890 |
| Monarchies of Asia | 0 | - | 4.97 | 70,934 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,446 |
| Asian Country Superlatives | 0 | - | 4.85 | 80,749 |
| Countries with the Most Muslims | 0 | - | 4.95 | 160,062 |
| Countries with the Most Exports | 0 | - | 4.96 | 155,016 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 189,322 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,224 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,210 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 269,952 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 103,963 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,311 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,385 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,809 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,109 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,784 |
| Countries with Megacities | 0 | - | 4.99 | 250,000 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,638 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,856 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,942 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,838 |
| Countries by Official Language | 0 | - | 4.95 | 194,520 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,368 |
| Countries in their Native Language | 0 | - | 4.99 | 198,083 |
| Independence from Whom | 0 | - | 4.99 | 211,188 |
| Subdivisions by Country | 0 | - | 4.86 | 50,262 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,609 |
| Megadiverse Countries | 0 | - | 4.96 | 134,723 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,200 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,152 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,719 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,999 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,646 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,333 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,879 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,790 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,458 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,957 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,812 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,674 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,942 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,746 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,662 |
| Richest Countries A-Z | 0 | - | 4.91 | 102,659 |
| Large Countries with Small Economies | 0 | - | 4.95 | 80,724 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,967 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,381 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,870 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,575 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,159 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,455 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,633 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,774 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,228 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,230 |
| Widest Countries East to West | 0 | - | 4.92 | 129,316 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,372 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,886 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,976 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,470 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,151 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,488 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,212 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,714 |
| Countries with Double Letters | 0 | - | 4.97 | 94,984 |
| Countries that End in N | 0 | - | 4.95 | 169,733 |
| Countries with Five Letters | 0 | - | 4.96 | 279,313 |
| Countries with Six Letters | 0 | - | 4.94 | 212,340 |
| Countries with W | 0 | - | 4.97 | 159,432 |
| Countries with Z | 0 | - | 4.98 | 289,672 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,640 |
| Countries That End in U | 0 | - | 4.95 | 120,368 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,666 |
| Countries that End in O | 0 | - | 4.92 | 159,161 |
| Countries that End in R | 0 | - | 4.87 | 118,699 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,478 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,207 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,045 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,042 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,624 |
| Countries That End in Y | 0 | - | 4.90 | 185,616 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,145 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,347 |
| Countries that End in I | 0 | - | 4.94 | 134,833 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,995 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,544 |
| Countries That End in NIA | 0 | - | 4.92 | 109,478 |
| Countries That End in BIA | 0 | - | 4.93 | 148,789 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,646 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,000 |
| Countries That End in RIA | 0 | - | 4.93 | 126,491 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,580 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,527 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,135 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,479 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,042 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,282 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,632 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,183 |
