| NATO Countries | 0 | - | 4.98 | 282,932 |
| EU Countries Quiz | 0 | - | 4.99 | 277,221 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,793,494 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,097 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,834 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,289 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,060 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 149,553 |
| Countries with NO Military | 0 | - | 4.97 | 63,197 |
| Countries by Number of Books Published | 0 | - | 4.95 | 73,014 |
| Landlocked Countries | 0 | - | 4.99 | 424,672 |
| All OPEC Countries Ever | 0 | - | 4.74 | 99,918 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,443 |
| Countries with the Most Tanks | 0 | - | 4.91 | 108,130 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 51,050 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 75,091 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,950 |
| Buddhist Countries | 0 | - | 4.96 | 144,948 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,668 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 124,513 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,797,265 |
| World Currency Quiz | 0 | - | 4.92 | 306,113 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,704 |
| Himalayan Countries | 0 | - | 4.93 | 139,831 |
| Andean Countries | 0 | - | 4.94 | 85,212 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,389 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,690 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,956 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,252 |
| Danube Countries | 0 | - | 4.97 | 72,286 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,435 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,723 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,891 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,387 |
| European Landlocked Countries | 0 | - | 4.99 | 147,472 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,112 |
| Countries with the Most Species | 0 | - | 4.99 | 103,500 |
| 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 | 47,827 |
| 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 | 78,887 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,908 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,833 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,147 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,273 |
| 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 | 41,668 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,462 |
| 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 | 119,557 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,531 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,581 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,510 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,267 |
| 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 | 158,683 |
| Countries by Countries | 0 | - | 4.96 | 63,524 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,996 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,563 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,358 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,063 |
| Island Countries | 0 | - | 4.99 | 712,131 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,462 |
| Northernmost Countries | 0 | - | 4.99 | 363,484 |
| Countries of South America | 0 | - | 5.00 | 931,105 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,484 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,871 |
| "Land" Countries | 0 | - | 4.98 | 338,095 |
| Countries that Start with A | 0 | - | 4.98 | 2,173,253 |
| Countries that Start with B | 0 | - | 4.95 | 2,304,237 |
| Countries that Start with C | 0 | - | 4.96 | 1,829,705 |
| Countries that Start with D | 0 | - | 4.96 | 715,167 |
| Countries that Start with E | 0 | - | 4.95 | 1,383,626 |
| Countries that Start with G | 0 | - | 4.97 | 1,509,979 |
| Countries that Start with H | 0 | - | 4.96 | 608,702 |
| Countries that Start with I | 0 | - | 4.92 | 1,293,436 |
| Countries that Start with J | 0 | - | 4.98 | 606,127 |
| Countries that Start with K | 0 | - | 4.97 | 819,875 |
| Countries that Start with L | 0 | - | 4.98 | 1,095,676 |
| Countries that Start with N | 0 | - | 4.93 | 1,122,714 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,971 |
| Countries that Start with S | 0 | - | 4.98 | 1,761,602 |
| Countries that Start with T | 0 | - | 4.90 | 1,014,025 |
| Countries that Start with U | 0 | - | 4.97 | 907,811 |
| Countries that Start with V | 0 | - | 4.98 | 611,512 |
| Countries that Start with F | 0 | - | 4.83 | 620,630 |
| Countries that Start with M | 0 | - | 4.97 | 1,387,078 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,265 |
| Orthodox Countries | 0 | - | 4.92 | 132,665 |
| Richest Island Countries | 0 | - | 4.85 | 101,105 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,062 |
| 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 | 123,817 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,224 |
| Countries with the Most Muslims | 0 | - | 4.95 | 161,044 |
| Countries with the Most Exports | 0 | - | 4.96 | 156,017 |
| 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 | 274,284 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,864 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,981 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,388 |
| 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 | 174,857 |
| Countries with Megacities | 0 | - | 4.99 | 266,517 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,566 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,949 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,859 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,058 |
| Countries by Official Language | 0 | - | 4.95 | 195,802 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,354 |
| Countries in their Native Language | 0 | - | 4.99 | 199,583 |
| Independence from Whom | 0 | - | 4.99 | 212,811 |
| 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 | 163,465 |
| 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 | 78,263 |
| 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 | 92,728 |
| Richest Countries A-Z | 0 | - | 4.91 | 103,872 |
| Large Countries with Small Economies | 0 | - | 4.95 | 81,239 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,600 |
| Communist Countries in History | 0 | - | 4.63 | 497,702 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,033 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,966 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,450 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,282 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,304 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,429 |
| 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 | 130,287 |
| Widest Countries East to West | 0 | - | 4.92 | 130,346 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,569 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,128 |
| 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 | 148,884 |
| 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 | 283,450 |
| Countries with Six Letters | 0 | - | 4.94 | 214,203 |
| Countries with W | 0 | - | 4.96 | 160,775 |
| Countries with Z | 0 | - | 4.98 | 292,178 |
| 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 | 134,933 |
| Countries that End in O | 0 | - | 4.92 | 159,735 |
| Countries that End in R | 0 | - | 4.87 | 119,123 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,876 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,628 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,022 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,733 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,655 |
| Countries That End in Y | 0 | - | 4.91 | 186,037 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,322 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,161 |
| Countries that End in I | 0 | - | 4.94 | 135,260 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,484 |
| 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 | 119,685 |
| Countries That End in RIA | 0 | - | 4.93 | 126,997 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,283 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,334 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,057 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,491 |
| 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 |
