| NATO Countries | 0 | - | 4.98 | 278,381 |
| EU Countries Quiz | 0 | - | 4.99 | 271,951 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,199,801 |
| Landlocked Countries | 0 | - | 4.99 | 417,117 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,404 |
| Hindu Countries | 0 | - | 4.86 | 49,871 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,659 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,590 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,744,094 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,152 |
| Himalayan Countries | 0 | - | 4.95 | 136,707 |
| Andean Countries | 0 | - | 4.95 | 83,577 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,840 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,126 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,501 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,098 |
| Danube Countries | 0 | - | 4.97 | 71,477 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,286 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,886 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,266 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,255 |
| European Landlocked Countries | 0 | - | 4.99 | 146,177 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,842 |
| Countries with the Most Species | 0 | - | 4.99 | 102,290 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,976 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,351 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,532 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,199 |
| 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 | 117,402 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,945 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,014 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,290 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,789 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,884 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,307 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,044 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,028 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,851 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,386 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,387 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,224 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,773 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,037 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,044 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,810 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,927 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,457 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,734 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,289 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,269 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,706 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,864 |
| Largest Countries By Category | 0 | - | 4.97 | 157,339 |
| Orthodox Countries | 0 | - | 4.92 | 131,018 |
| Countries by Countries | 0 | - | 4.96 | 62,651 |
| Battle to Country | 0 | - | 4.91 | 52,979 |
| Monarchies of Europe | 0 | - | 4.90 | 97,751 |
| Monarchies of Asia | 0 | - | 4.97 | 70,863 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,936 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,096 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,136 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,671 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,180 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,695 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,361 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,027 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,109 |
| Island Countries | 0 | - | 4.99 | 709,021 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,626 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,901 |
| Northernmost Countries | 0 | - | 4.99 | 359,622 |
| Countries of South America | 0 | - | 5.00 | 920,329 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,821 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,313 |
| "Land" Countries | 0 | - | 4.98 | 334,966 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,764 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,225 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,194 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,831 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 119,976 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,509 |
| Communist Countries in History | 0 | - | 4.63 | 494,127 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,694 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,564 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,711 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,653 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,036 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,446 |
| Countries with Megacities | 0 | - | 4.99 | 249,330 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,301 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,642 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,622 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,618 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 107,545 |
| Countries by Official Language | 0 | - | 4.95 | 194,169 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,972 |
| Countries in their Native Language | 0 | - | 4.99 | 197,778 |
| Independence from Whom | 0 | - | 4.99 | 210,923 |
| Subdivisions by Country | 0 | - | 4.86 | 50,218 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,427 |
| Megadiverse Countries | 0 | - | 4.96 | 134,586 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,949 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,100 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,654 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,959 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,501 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,259 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,675 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,580 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,397 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,817 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,419 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,605 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,705 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,672 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,884 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,239 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,704 |
| World Map Quiz | 0 | - | 4.81 | 64,191 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,641 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,755 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,141 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,723 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,451 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,828 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,323 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,507 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,670 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,171 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,890 |
| Widest Countries East to West | 0 | - | 4.92 | 129,198 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,337 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,716 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,942 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,986 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,026 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,400 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,139 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,685 |
| Political Movements by Country | 0 | - | 4.46 | 72,407 |
| Countries with Double Letters | 0 | - | 4.96 | 94,399 |
| Countries that End in N | 0 | - | 4.95 | 168,181 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 267,339 |
| Countries with Six Letters | 0 | - | 4.93 | 211,533 |
| Countries with W | 0 | - | 4.97 | 159,019 |
| Countries with Z | 0 | - | 4.98 | 289,069 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,221 |
| Countries That End in U | 0 | - | 4.95 | 120,089 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,289 |
| Countries that End in O | 0 | - | 4.92 | 158,966 |
| Countries that End in R | 0 | - | 4.87 | 118,566 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,359 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,883 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,823 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,875 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,461 |
| Countries That End in Y | 0 | - | 4.90 | 185,483 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,933 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,165 |
| Countries that End in I | 0 | - | 4.94 | 134,711 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,766 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,446 |
| Countries That End in NIA | 0 | - | 4.92 | 109,334 |
| Countries That End in BIA | 0 | - | 4.93 | 148,630 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,479 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,826 |
| Countries That End in RIA | 0 | - | 4.93 | 126,382 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,398 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,200 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,929 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,261 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,880 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,183 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,498 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,017 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,896 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,065 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,287 |
| Countries that End in L | 0 | - | 4.94 | 156,342 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,146 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,092 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,736 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,596 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,653 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,405 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,869 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,410 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,877 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,328 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,085 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,886 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,313 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,539 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,542 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,815,512 |
| One Border Countries | 0 | - | 4.98 | 466,698 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,606,395 |
| All OPEC Countries Ever | 0 | - | 4.74 | 89,413 |
