| Countries by National Anthem | 0 | - | 4.92 | 71,132 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,193,373 |
| Landlocked Countries | 0 | - | 4.99 | 417,032 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,743,420 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,292 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,980 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,052 |
| Island Countries | 0 | - | 4.99 | 708,980 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,105 |
| Himalayan Countries | 0 | - | 4.95 | 136,667 |
| Andean Countries | 0 | - | 4.95 | 83,567 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,821 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,106 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,490 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,085 |
| Danube Countries | 0 | - | 4.97 | 71,468 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,279 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,881 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,239 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,237 |
| European Landlocked Countries | 0 | - | 4.99 | 146,166 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,827 |
| Countries with the Most Species | 0 | - | 4.99 | 102,230 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,958 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,348 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,528 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,190 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,839 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,218 |
| Countries in the Alps | 0 | - | 4.86 | 117,392 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,937 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,996 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,282 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,779 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,870 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,292 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,034 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,018 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,844 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,383 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,384 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,221 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,762 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,030 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,035 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,791 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,919 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,452 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,283 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,227 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,679 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,852 |
| Largest Countries By Category | 0 | - | 4.97 | 157,325 |
| Countries by Countries | 0 | - | 4.96 | 62,635 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,426 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,924 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,094 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,128 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,793 |
| Northernmost Countries | 0 | - | 4.99 | 359,570 |
| Countries of South America | 0 | - | 5.00 | 920,210 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,708 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,030 |
| "Land" Countries | 0 | - | 4.98 | 334,838 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,517 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,005 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,428 |
| Countries with Megacities | 0 | - | 4.99 | 249,261 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,286 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,631 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,599 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,606 |
| Countries by Official Language | 0 | - | 4.95 | 194,111 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,918 |
| Countries in their Native Language | 0 | - | 4.99 | 197,727 |
| Independence from Whom | 0 | - | 4.99 | 210,906 |
| Subdivisions by Country | 0 | - | 4.86 | 50,215 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,412 |
| Megadiverse Countries | 0 | - | 4.96 | 134,576 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,924 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,090 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,651 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,958 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,486 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,256 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,662 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,579 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,393 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,815 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,383 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,600 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,701 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,666 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,880 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,228 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,677 |
| World Map Quiz | 0 | - | 4.81 | 64,173 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,604 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,742 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,123 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,711 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,440 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,801 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,313 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,497 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,663 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,166 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,771 |
| Widest Countries East to West | 0 | - | 4.92 | 129,181 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,336 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,709 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,936 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,979 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,015 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,392 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,133 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,685 |
| Countries with Double Letters | 0 | - | 4.96 | 94,313 |
| Countries that End in N | 0 | - | 4.95 | 167,885 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 263,540 |
| Countries with Six Letters | 0 | - | 4.93 | 211,372 |
| Countries with W | 0 | - | 4.97 | 158,956 |
| Countries with Z | 0 | - | 4.98 | 288,970 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,170 |
| Countries That End in U | 0 | - | 4.95 | 120,032 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,258 |
| Countries that End in O | 0 | - | 4.92 | 158,935 |
| Countries that End in R | 0 | - | 4.87 | 118,549 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,324 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,851 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,801 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,854 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,435 |
| Countries That End in Y | 0 | - | 4.90 | 185,467 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,908 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,140 |
| Countries that End in I | 0 | - | 4.94 | 134,704 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,750 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,436 |
| Countries That End in NIA | 0 | - | 4.92 | 109,323 |
| Countries That End in BIA | 0 | - | 4.93 | 148,610 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,464 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,812 |
| Countries That End in RIA | 0 | - | 4.93 | 126,375 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,381 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,172 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,908 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,249 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,854 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,177 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,484 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,991 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,881 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,045 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,264 |
| Countries that End in L | 0 | - | 4.94 | 156,328 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,085 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,088 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,727 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,589 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,644 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,389 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,850 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,395 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,869 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,311 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,071 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,882 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,310 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,534 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,537 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,815,156 |
| One Border Countries | 0 | - | 4.98 | 466,652 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,605,996 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,329 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,991 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,393 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,120 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,131 |
| Cities with the Most Opera Performances | 0 | - | 4.61 | 41,191 |
| Majority Muslim Countries | 0 | - | 4.98 | 372,130 |
| NATO Countries | 0 | - | 4.98 | 278,322 |
| EU Countries Quiz | 0 | - | 4.99 | 271,893 |
| Recently Independent Countries | 0 | - | 4.98 | 158,432 |
| French-Speaking Countries | 0 | - | 4.85 | 269,838 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,593 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,057 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,567 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,662 |
| German-Speaking Countries | 0 | - | 4.91 | 144,376 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,095,008 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,069 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,672 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,251 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,485 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,177 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,268 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 112,136 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,365 |
| Olympic Host Countries | 0 | - | 4.98 | 199,715 |
