| NATO Countries | 0 | - | 4.98 | 281,794 |
| EU Countries Quiz | 0 | - | 4.99 | 275,815 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,625,458 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,830 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,580 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,762 |
| Top Five Countries by Religion | 0 | - | 4.93 | 172,377 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 149,067 |
| Countries with NO Military | 0 | - | 4.97 | 62,707 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,827 |
| Landlocked Countries | 0 | - | 4.99 | 422,519 |
| All OPEC Countries Ever | 0 | - | 4.74 | 99,369 |
| Countries with the Most Christians | 0 | - | 4.93 | 143,676 |
| Countries with the Most Tanks | 0 | - | 4.91 | 107,755 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,774 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,942 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 321,932 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,589 |
| Buddhist Countries | 0 | - | 4.96 | 144,671 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,068 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 124,069 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,782,663 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,788 |
| Himalayan Countries | 0 | - | 4.95 | 138,970 |
| Andean Countries | 0 | - | 4.93 | 84,766 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,987 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,053 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,584 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,909 |
| Danube Countries | 0 | - | 4.97 | 72,092 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,110 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,484 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,433 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,912 |
| European Landlocked Countries | 0 | - | 4.99 | 147,216 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,752 |
| Countries with the Most Species | 0 | - | 4.99 | 103,297 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,868 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,627 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,747 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,591 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,303 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,729 |
| Countries in the Alps | 0 | - | 4.87 | 118,293 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,447 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,153 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,714 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,660 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,578 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,994 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,739 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,560 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,220 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,912 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,687 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,566 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,279 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,532 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,593 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,031 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,361 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,401 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,181 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,219 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,286 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,275 |
| Largest Countries By Category | 0 | - | 4.97 | 158,321 |
| Countries by Countries | 0 | - | 4.96 | 63,308 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,740 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,045 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,664 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,675 |
| Island Countries | 0 | - | 4.99 | 711,230 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,537 |
| Northernmost Countries | 0 | - | 4.99 | 362,225 |
| Countries of South America | 0 | - | 5.00 | 928,111 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,901 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,943 |
| "Land" Countries | 0 | - | 4.98 | 337,491 |
| Countries that Start with A | 0 | - | 4.98 | 2,167,687 |
| Countries that Start with B | 0 | - | 4.95 | 2,298,985 |
| Countries that Start with C | 0 | - | 4.96 | 1,825,762 |
| Countries that Start with D | 0 | - | 4.96 | 712,305 |
| Countries that Start with E | 0 | - | 4.95 | 1,380,296 |
| Countries that Start with G | 0 | - | 4.97 | 1,506,541 |
| Countries that Start with H | 0 | - | 4.96 | 606,621 |
| Countries that Start with I | 0 | - | 4.92 | 1,290,757 |
| Countries that Start with J | 0 | - | 4.98 | 604,204 |
| Countries that Start with K | 0 | - | 4.97 | 817,769 |
| Countries that Start with L | 0 | - | 4.98 | 1,093,077 |
| Countries that Start with N | 0 | - | 4.93 | 1,120,150 |
| Countries that Start with P | 0 | - | 4.94 | 1,218,506 |
| Countries that Start with S | 0 | - | 4.98 | 1,758,170 |
| Countries that Start with T | 0 | - | 4.90 | 1,011,650 |
| Countries that Start with U | 0 | - | 4.97 | 905,927 |
| Countries that Start with V | 0 | - | 4.98 | 610,358 |
| Countries that Start with F | 0 | - | 4.83 | 619,048 |
| Countries that Start with M | 0 | - | 4.97 | 1,384,343 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,852 |
| Orthodox Countries | 0 | - | 4.92 | 132,331 |
| Richest Island Countries | 0 | - | 4.85 | 100,842 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,019 |
| Monarchies of Europe | 0 | - | 4.90 | 98,401 |
| Monarchies of Asia | 0 | - | 4.97 | 71,266 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,195 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,052 |
| Countries with the Most Muslims | 0 | - | 4.95 | 160,732 |
| Countries with the Most Exports | 0 | - | 4.96 | 155,696 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 190,035 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,553 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,640 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 272,875 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,582 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,747 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,074 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 195,573 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,651 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,050 |
| Countries with Megacities | 0 | - | 4.99 | 264,925 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,870 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,559 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,139 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,635 |
| Countries by Official Language | 0 | - | 4.95 | 195,354 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,519 |
| Countries in their Native Language | 0 | - | 4.99 | 199,146 |
| Independence from Whom | 0 | - | 4.99 | 212,234 |
| Subdivisions by Country | 0 | - | 4.87 | 50,451 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,824 |
| Megadiverse Countries | 0 | - | 4.96 | 135,057 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,193 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,386 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,265 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,127 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,202 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,628 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,544 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,069 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,687 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,163 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,790 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,921 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,232 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,996 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,887 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,848 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,741 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,429 |
| Richest Countries A-Z | 0 | - | 4.91 | 103,527 |
| Large Countries with Small Economies | 0 | - | 4.95 | 81,095 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,401 |
| Communist Countries in History | 0 | - | 4.63 | 496,728 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,197 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,344 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,045 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,371 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,947 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,059 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,341 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,473 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,609 |
| Widest Countries East to West | 0 | - | 4.92 | 129,707 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,470 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,442 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,142 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,804 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,636 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,918 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,396 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,813 |
| Countries with Double Letters | 0 | - | 4.96 | 96,345 |
| Countries that End in N | 0 | - | 4.95 | 171,238 |
| Countries with Five Letters | 0 | - | 4.96 | 282,705 |
| Countries with Six Letters | 0 | - | 4.94 | 213,677 |
| Countries with W | 0 | - | 4.97 | 160,408 |
| Countries with Z | 0 | - | 4.98 | 291,592 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,776 |
| Countries That End in U | 0 | - | 4.95 | 120,886 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,541 |
| Countries that End in O | 0 | - | 4.92 | 159,544 |
| Countries that End in R | 0 | - | 4.87 | 118,991 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,760 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,197 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,751 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,518 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,438 |
| Countries That End in Y | 0 | - | 4.91 | 185,901 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,996 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,912 |
| Countries that End in I | 0 | - | 4.94 | 135,129 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,170 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,849 |
| Countries That End in NIA | 0 | - | 4.92 | 109,827 |
| Countries That End in BIA | 0 | - | 4.93 | 149,255 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,160 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,469 |
| Countries That End in RIA | 0 | - | 4.93 | 126,846 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,056 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,742 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,773 |
