| NATO Countries | 0 | - | 4.98 | 282,937 |
| EU Countries Quiz | 0 | - | 4.99 | 277,227 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,794,025 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,101 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,837 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,293 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,062 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 149,555 |
| Countries with NO Military | 0 | - | 4.97 | 63,197 |
| Countries by Number of Books Published | 0 | - | 4.95 | 73,016 |
| Landlocked Countries | 0 | - | 4.99 | 424,677 |
| All OPEC Countries Ever | 0 | - | 4.74 | 99,918 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,444 |
| Countries with the Most Tanks | 0 | - | 4.91 | 108,132 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 51,050 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 75,092 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,281 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,951 |
| Buddhist Countries | 0 | - | 4.96 | 144,948 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,670 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 124,514 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,797,308 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,704 |
| Himalayan Countries | 0 | - | 4.93 | 139,831 |
| Andean Countries | 0 | - | 4.94 | 85,213 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,391 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,691 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,956 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,255 |
| Danube Countries | 0 | - | 4.97 | 72,286 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,436 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,723 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,892 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,387 |
| European Landlocked Countries | 0 | - | 4.99 | 147,473 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,112 |
| Countries with the Most Species | 0 | - | 4.99 | 103,501 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,261 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,715 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,828 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,761 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,493 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,917 |
| Countries in the Alps | 0 | - | 4.87 | 118,614 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,366 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,632 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,888 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,911 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,835 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,147 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,274 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,779 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,350 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,082 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,801 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,671 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,463 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,702 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,790 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,558 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,531 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,584 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,511 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,268 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,882 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,440 |
| Largest Countries By Category | 0 | - | 4.97 | 158,685 |
| Countries by Countries | 0 | - | 4.96 | 63,527 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,997 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,564 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,359 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,065 |
| Island Countries | 0 | - | 4.99 | 712,134 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,470 |
| Northernmost Countries | 0 | - | 4.99 | 363,487 |
| Countries of South America | 0 | - | 5.00 | 931,121 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,492 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,886 |
| "Land" Countries | 0 | - | 4.98 | 338,097 |
| Countries that Start with A | 0 | - | 4.98 | 2,173,264 |
| Countries that Start with B | 0 | - | 4.95 | 2,304,244 |
| Countries that Start with C | 0 | - | 4.96 | 1,829,717 |
| Countries that Start with D | 0 | - | 4.96 | 715,171 |
| Countries that Start with E | 0 | - | 4.95 | 1,383,632 |
| Countries that Start with G | 0 | - | 4.97 | 1,509,985 |
| Countries that Start with H | 0 | - | 4.96 | 608,703 |
| Countries that Start with I | 0 | - | 4.92 | 1,293,442 |
| Countries that Start with J | 0 | - | 4.98 | 606,131 |
| Countries that Start with K | 0 | - | 4.97 | 819,880 |
| Countries that Start with L | 0 | - | 4.98 | 1,095,683 |
| Countries that Start with N | 0 | - | 4.93 | 1,122,716 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,975 |
| Countries that Start with S | 0 | - | 4.98 | 1,761,606 |
| Countries that Start with T | 0 | - | 4.90 | 1,014,029 |
| Countries that Start with U | 0 | - | 4.97 | 907,817 |
| Countries that Start with V | 0 | - | 4.98 | 611,517 |
| Countries that Start with F | 0 | - | 4.83 | 620,630 |
| Countries that Start with M | 0 | - | 4.97 | 1,387,081 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,266 |
| Orthodox Countries | 0 | - | 4.92 | 132,667 |
| Richest Island Countries | 0 | - | 4.85 | 101,105 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,075 |
| Monarchies of Europe | 0 | - | 4.90 | 98,729 |
| Monarchies of Asia | 0 | - | 4.97 | 71,434 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,819 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,225 |
| Countries with the Most Muslims | 0 | - | 4.95 | 161,045 |
| Countries with the Most Exports | 0 | - | 4.96 | 156,018 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 190,338 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,708 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,850 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 274,290 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,865 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,981 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,389 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 195,950 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,941 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,858 |
| Countries with Megacities | 0 | - | 4.99 | 266,518 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,566 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,950 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,860 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,058 |
| Countries by Official Language | 0 | - | 4.95 | 195,803 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,355 |
| Countries in their Native Language | 0 | - | 4.99 | 199,584 |
| Independence from Whom | 0 | - | 4.99 | 212,815 |
| Subdivisions by Country | 0 | - | 4.87 | 50,573 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,264 |
| Megadiverse Countries | 0 | - | 4.96 | 135,207 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,787 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,487 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,392 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,194 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,466 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,777 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,960 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,519 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,783 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,228 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,269 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,322 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,384 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,111 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,729 |
| Richest Countries A-Z | 0 | - | 4.91 | 103,873 |
| Large Countries with Small Economies | 0 | - | 4.95 | 81,239 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,602 |
| Communist Countries in History | 0 | - | 4.63 | 497,702 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,034 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,969 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,450 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,284 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,305 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,430 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,624 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,628 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,291 |
| Widest Countries East to West | 0 | - | 4.92 | 130,346 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,570 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,129 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,476 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,993 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,885 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,384 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,468 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,870 |
| Countries with Double Letters | 0 | - | 4.96 | 96,840 |
| Countries that End in N | 0 | - | 4.95 | 171,723 |
| Countries with Five Letters | 0 | - | 4.96 | 283,452 |
| Countries with Six Letters | 0 | - | 4.94 | 214,203 |
| Countries with W | 0 | - | 4.96 | 160,776 |
| Countries with Z | 0 | - | 4.98 | 292,180 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,123 |
| Countries That End in U | 0 | - | 4.95 | 121,087 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,934 |
| Countries that End in O | 0 | - | 4.92 | 159,736 |
| Countries that End in R | 0 | - | 4.87 | 119,123 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,877 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,629 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,024 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,734 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,656 |
| Countries That End in Y | 0 | - | 4.91 | 186,037 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,323 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,162 |
| Countries that End in I | 0 | - | 4.94 | 135,260 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,486 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,989 |
| Countries That End in NIA | 0 | - | 4.92 | 109,976 |
| Countries That End in BIA | 0 | - | 4.93 | 149,491 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,407 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,686 |
| Countries That End in RIA | 0 | - | 4.93 | 126,998 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,285 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,337 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,057 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,492 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,057 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,751 |
