| NATO Countries | 0 | - | 4.98 | 283,620 |
| EU Countries Quiz | 0 | - | 4.99 | 278,154 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,910,604 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,936 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,564 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,209 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,525 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 149,841 |
| Countries with NO Military | 0 | - | 4.97 | 63,472 |
| Countries by Number of Books Published | 0 | - | 4.95 | 73,128 |
| Landlocked Countries | 0 | - | 4.99 | 426,367 |
| All OPEC Countries Ever | 0 | - | 4.70 | 100,240 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,763 |
| Countries with the Most Tanks | 0 | - | 4.91 | 108,346 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 51,195 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 75,180 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 89,194 |
| Buddhist Countries | 0 | - | 4.96 | 145,150 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 337,044 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 124,757 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,807,048 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,479 |
| Himalayan Countries | 0 | - | 4.93 | 140,430 |
| Andean Countries | 0 | - | 4.94 | 85,576 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,721 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,169 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,284 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,523 |
| Danube Countries | 0 | - | 4.97 | 72,455 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,667 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,888 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,233 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,707 |
| European Landlocked Countries | 0 | - | 4.99 | 147,649 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,370 |
| Countries with the Most Species | 0 | - | 4.99 | 103,594 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,479 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,788 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,909 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,870 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,607 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,055 |
| Countries in the Alps | 0 | - | 4.87 | 118,836 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,745 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,966 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,996 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,074 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,014 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,303 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,456 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,903 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,454 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,221 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,906 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,769 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,594 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,836 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,930 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,949 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,649 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,085 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,728 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,897 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,258 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,544 |
| Largest Countries By Category | 0 | - | 4.97 | 158,933 |
| Countries by Countries | 0 | - | 4.96 | 63,690 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,135 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,828 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,813 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,929 |
| Island Countries | 0 | - | 4.99 | 712,713 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,222 |
| Northernmost Countries | 0 | - | 4.99 | 364,215 |
| Countries of South America | 0 | - | 5.00 | 933,235 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,223 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,890,612 |
| "Land" Countries | 0 | - | 4.98 | 338,506 |
| Countries that Start with A | 0 | - | 4.98 | 2,176,561 |
| Countries that Start with B | 0 | - | 4.95 | 2,307,264 |
| Countries that Start with C | 0 | - | 4.96 | 1,832,093 |
| Countries that Start with D | 0 | - | 4.96 | 716,857 |
| Countries that Start with E | 0 | - | 4.95 | 1,385,597 |
| Countries that Start with G | 0 | - | 4.97 | 1,512,071 |
| Countries that Start with H | 0 | - | 4.96 | 609,887 |
| Countries that Start with I | 0 | - | 4.92 | 1,294,967 |
| Countries that Start with J | 0 | - | 4.98 | 607,262 |
| Countries that Start with K | 0 | - | 4.97 | 821,082 |
| Countries that Start with L | 0 | - | 4.98 | 1,097,219 |
| Countries that Start with N | 0 | - | 4.93 | 1,124,289 |
| Countries that Start with P | 0 | - | 4.94 | 1,222,431 |
| Countries that Start with S | 0 | - | 4.98 | 1,763,695 |
| Countries that Start with T | 0 | - | 4.90 | 1,015,218 |
| Countries that Start with U | 0 | - | 4.97 | 908,728 |
| Countries that Start with V | 0 | - | 4.98 | 612,191 |
| Countries that Start with F | 0 | - | 4.83 | 621,536 |
| Countries that Start with M | 0 | - | 4.97 | 1,388,692 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,483 |
| Orthodox Countries | 0 | - | 4.92 | 132,853 |
| Richest Island Countries | 0 | - | 4.85 | 101,262 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,394,919 |
| Monarchies of Europe | 0 | - | 4.90 | 98,920 |
| Monarchies of Asia | 0 | - | 4.97 | 71,531 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,186 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,312 |
| Countries with the Most Muslims | 0 | - | 4.95 | 161,245 |
| Countries with the Most Exports | 0 | - | 4.96 | 156,229 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 190,522 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,809 |
| Largest Economies in 2050 | 0 | - | 4.88 | 111,956 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 275,078 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 105,030 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 85,122 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,594 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 196,211 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 119,138 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,281 |
| Countries with Megacities | 0 | - | 4.99 | 267,371 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,957 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,209 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,273 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,313 |
| Countries by Official Language | 0 | - | 4.95 | 196,085 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,742 |
| Countries in their Native Language | 0 | - | 4.99 | 199,815 |
| Independence from Whom | 0 | - | 4.99 | 213,186 |
| Subdivisions by Country | 0 | - | 4.87 | 50,637 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,540 |
| Megadiverse Countries | 0 | - | 4.96 | 140,227 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,009 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,552 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,737 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,234 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,331 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,880 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,166 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,584 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,104 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,269 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,618 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,410 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,459 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,168 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,878 |
| Richest Countries A-Z | 0 | - | 4.91 | 104,097 |
| Large Countries with Small Economies | 0 | - | 4.95 | 81,317 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,747 |
| Communist Countries in History | 0 | - | 4.63 | 498,392 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,349 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,144 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,607 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,694 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,479 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,592 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,785 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,715 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,820 |
| Widest Countries East to West | 0 | - | 4.92 | 130,765 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,611 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,293 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,529 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,090 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,025 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,514 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,514 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,904 |
| Countries with Double Letters | 0 | - | 4.96 | 97,181 |
| Countries that End in N | 0 | - | 4.95 | 172,145 |
| Countries with Five Letters | 0 | - | 4.96 | 284,130 |
| Countries with Six Letters | 0 | - | 4.94 | 214,598 |
| Countries with W | 0 | - | 4.96 | 161,029 |
| Countries with Z | 0 | - | 4.98 | 292,565 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,365 |
| Countries That End in U | 0 | - | 4.95 | 121,235 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,181 |
| Countries that End in O | 0 | - | 4.92 | 160,255 |
| Countries that End in R | 0 | - | 4.87 | 119,209 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,976 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,938 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,210 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,871 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,797 |
| Countries That End in Y | 0 | - | 4.91 | 186,106 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,517 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,316 |
| Countries that End in I | 0 | - | 4.94 | 135,346 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,679 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,086 |
| Countries That End in NIA | 0 | - | 4.92 | 110,091 |
| Countries That End in BIA | 0 | - | 4.93 | 149,622 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,677 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,806 |
| Countries That End in RIA | 0 | - | 4.93 | 127,083 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,437 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,701 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,244 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,692 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,245 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,834 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,359 |
