| City to Country Quiz #1 | 0 | - | 4.97 | 157,753 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,105 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,515 |
| Landlocked Countries | 0 | - | 4.99 | 426,808 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,935,578 |
| Historical City to Country | 0 | - | 4.85 | 79,077 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,693 |
| Himalayan Countries | 0 | - | 4.93 | 140,624 |
| Andean Countries | 0 | - | 4.94 | 85,698 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,825 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,335 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,378 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,611 |
| Danube Countries | 0 | - | 4.97 | 72,503 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,723 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,924 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,336 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,795 |
| European Landlocked Countries | 0 | - | 4.99 | 147,692 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,449 |
| Countries with the Most Species | 0 | - | 4.99 | 103,618 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,558 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,799 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,929 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,897 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,642 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,095 |
| Countries in the Alps | 0 | - | 4.87 | 118,900 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,862 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,036 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,030 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,120 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,070 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,344 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,509 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,955 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,485 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,270 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,929 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,805 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,628 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,878 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,976 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,058 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,682 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,962 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,773 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,071 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,364 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,581 |
| Largest Countries By Category | 0 | - | 4.97 | 158,996 |
| Countries by Countries | 0 | - | 4.97 | 63,745 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,368 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,435 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,696 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,184 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,809,220 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,178 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,922 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,108 |
| Island Countries | 0 | - | 4.99 | 712,837 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,611 |
| Northernmost Countries | 0 | - | 4.99 | 364,382 |
| Countries of South America | 0 | - | 5.00 | 933,650 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,669 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,891,554 |
| "Land" Countries | 0 | - | 4.98 | 338,737 |
| City to Country Quiz #2 | 0 | - | 4.80 | 109,607 |
| City to Country Quiz #4 | 0 | - | 4.55 | 95,175 |
| City to Country Quiz #5 | 0 | - | 4.74 | 82,012 |
| City to Country Quiz #6 | 0 | - | 4.56 | 66,368 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,395,769 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,385 |
| Countries with Megacities | 0 | - | 4.99 | 267,576 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,035 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,266 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,369 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,371 |
| Countries by Official Language | 0 | - | 4.95 | 196,147 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,818 |
| Countries in their Native Language | 0 | - | 4.99 | 199,874 |
| Independence from Whom | 0 | - | 4.99 | 213,288 |
| Subdivisions by Country | 0 | - | 4.87 | 50,645 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,591 |
| Megadiverse Countries | 0 | - | 4.96 | 147,257 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,063 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,563 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,765 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,243 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,387 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,903 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,218 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,601 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,135 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,280 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,682 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,450 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,480 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,194 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,614 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,933 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,590 |
| World Map Quiz | 0 | - | 4.81 | 65,865 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,657 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,771 |
| Countries by Founding Story | 0 | - | 4.95 | 77,878 |
| Countries by Road Signs | 0 | - | 4.98 | 54,408 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,421 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,181 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,642 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,791 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,507 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,620 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,808 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,741 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,879 |
| Widest Countries East to West | 0 | - | 4.92 | 130,794 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,623 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,336 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,545 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,117 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,065 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,568 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,524 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,914 |
| Countries with Double Letters | 0 | - | 4.96 | 97,415 |
| Countries that End in N | 0 | - | 4.95 | 172,465 |
| Countries with Five Letters | 0 | - | 4.96 | 284,399 |
| Countries with Six Letters | 0 | - | 4.94 | 214,777 |
| Countries with W | 0 | - | 4.96 | 161,174 |
| Countries with Z | 0 | - | 4.98 | 292,786 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,533 |
| Countries That End in U | 0 | - | 4.95 | 121,313 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,301 |
| Countries that End in O | 0 | - | 4.92 | 160,318 |
| Countries that End in R | 0 | - | 4.87 | 119,245 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,013 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,041 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 180,879 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,039 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,373 |
| Countries That End in Y | 0 | - | 4.91 | 186,140 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,946 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,360 |
| Countries that End in I | 0 | - | 4.94 | 135,380 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,015 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,114 |
| Countries That End in NIA | 0 | - | 4.92 | 110,117 |
| Countries That End in BIA | 0 | - | 4.93 | 149,681 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,861 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,844 |
| Countries That End in RIA | 0 | - | 4.93 | 127,111 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,489 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,824 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,307 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,767 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,322 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,876 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,394 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,574 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,994 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,692 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,835 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,533 |
| Countries that End in L | 0 | - | 4.94 | 157,201 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,344 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,368 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,580 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,249 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,486 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,366 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,115 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,283 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,279 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,962 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,861 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,320 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,303 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,797 |
| One Border Countries | 0 | - | 4.98 | 472,339 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,733 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 23,097 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,851,425 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,657,240 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,421 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,408 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,762 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,959 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,314 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,685 |
| Countries by National Anthem | 0 | - | 4.92 | 71,426 |
| NATO Countries | 0 | - | 4.98 | 283,787 |
| EU Countries Quiz | 0 | - | 4.99 | 278,548 |
| Recently Independent Countries | 0 | - | 4.98 | 160,448 |
| French-Speaking Countries | 0 | - | 4.85 | 271,806 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,207 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,060 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,700 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,429 |
| German-Speaking Countries | 0 | - | 4.92 | 146,061 |
