| NATO Countries | 0 | - | 4.98 | 278,358 |
| EU Countries Quiz | 0 | - | 4.99 | 271,925 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,196,821 |
| Landlocked Countries | 0 | - | 4.99 | 417,082 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,398 |
| Hindu Countries | 0 | - | 4.86 | 49,870 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,656 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,580 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,743,802 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,128 |
| Himalayan Countries | 0 | - | 4.95 | 136,689 |
| Andean Countries | 0 | - | 4.95 | 83,573 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,831 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,116 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,497 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,095 |
| Danube Countries | 0 | - | 4.97 | 71,475 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,281 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,884 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,258 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,246 |
| European Landlocked Countries | 0 | - | 4.99 | 146,174 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,835 |
| Countries with the Most Species | 0 | - | 4.99 | 102,254 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,967 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,351 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,530 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,196 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,845 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,221 |
| Countries in the Alps | 0 | - | 4.86 | 117,399 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,942 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,005 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,284 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,785 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,878 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,301 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,040 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,023 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,849 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,384 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,387 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,222 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,766 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,030 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,041 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,799 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,925 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,455 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,727 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,286 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,243 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,694 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,860 |
| Largest Countries By Category | 0 | - | 4.97 | 157,332 |
| Orthodox Countries | 0 | - | 4.92 | 131,010 |
| Countries by Countries | 0 | - | 4.96 | 62,642 |
| Battle to Country | 0 | - | 4.91 | 52,973 |
| Monarchies of Europe | 0 | - | 4.90 | 97,746 |
| Monarchies of Asia | 0 | - | 4.97 | 70,863 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,931 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,096 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,134 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,667 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,172 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,693 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,336 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,012 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,085 |
| Island Countries | 0 | - | 4.99 | 708,999 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,531 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,837 |
| Northernmost Countries | 0 | - | 4.99 | 359,600 |
| Countries of South America | 0 | - | 5.00 | 920,286 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,782 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,178 |
| "Land" Countries | 0 | - | 4.98 | 334,902 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,752 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,221 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,190 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,827 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 119,945 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,506 |
| Communist Countries in History | 0 | - | 4.63 | 494,110 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,692 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,560 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,710 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,582 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,023 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,441 |
| Countries with Megacities | 0 | - | 4.99 | 249,311 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,297 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,638 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,614 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,616 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 107,542 |
| Countries by Official Language | 0 | - | 4.95 | 194,154 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,950 |
| Countries in their Native Language | 0 | - | 4.99 | 197,753 |
| Independence from Whom | 0 | - | 4.99 | 210,920 |
| Subdivisions by Country | 0 | - | 4.86 | 50,217 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,423 |
| Megadiverse Countries | 0 | - | 4.96 | 134,581 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,935 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,095 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,652 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,959 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,498 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,258 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,672 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,580 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,394 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,815 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,405 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,603 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,704 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,670 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,881 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,235 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,695 |
| World Map Quiz | 0 | - | 4.81 | 64,183 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,621 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,749 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,133 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,720 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,446 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,813 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,317 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,505 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,668 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,170 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,839 |
| Widest Countries East to West | 0 | - | 4.92 | 129,191 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,337 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,713 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,941 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,985 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,019 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,395 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,134 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,685 |
| Political Movements by Country | 0 | - | 4.46 | 72,405 |
| Countries with Double Letters | 0 | - | 4.96 | 94,351 |
| Countries that End in N | 0 | - | 4.95 | 168,058 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 265,732 |
| Countries with Six Letters | 0 | - | 4.93 | 211,470 |
| Countries with W | 0 | - | 4.97 | 158,985 |
| Countries with Z | 0 | - | 4.98 | 289,024 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,198 |
| Countries That End in U | 0 | - | 4.95 | 120,060 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,279 |
| Countries that End in O | 0 | - | 4.92 | 158,942 |
| Countries that End in R | 0 | - | 4.87 | 118,554 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,335 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,867 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,811 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,868 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,448 |
| Countries That End in Y | 0 | - | 4.90 | 185,470 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,926 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,152 |
| Countries that End in I | 0 | - | 4.94 | 134,708 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,760 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,442 |
| Countries That End in NIA | 0 | - | 4.92 | 109,328 |
| Countries That End in BIA | 0 | - | 4.93 | 148,619 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,474 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,819 |
| Countries That End in RIA | 0 | - | 4.93 | 126,376 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,390 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,187 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,921 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,257 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,868 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,180 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,488 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,006 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,891 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,054 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,277 |
| Countries that End in L | 0 | - | 4.94 | 156,333 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,121 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,092 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,731 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,595 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,648 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,395 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,859 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,406 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,870 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,319 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,078 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,886 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,312 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,538 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,540 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,815,343 |
| One Border Countries | 0 | - | 4.98 | 466,681 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,606,189 |
| All OPEC Countries Ever | 0 | - | 4.74 | 89,364 |
