| City to Country Quiz #1 | 0 | - | 4.95 | 135,405 |
| City to Country Quiz #3 | 0 | - | 4.87 | 101,102 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,664 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 334,814 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,799,996 |
| Historical City to Country | 0 | - | 4.82 | 73,119 |
| Members of the Arab League | 0 | - | 4.86 | 66,471 |
| Sahara Desert Countries | 0 | - | 4.97 | 130,637 |
| Himalayan Countries | 0 | - | 4.94 | 108,587 |
| Andean Countries | 0 | - | 4.91 | 60,312 |
| Countries with the Oldest Median Age | 0 | - | 4.82 | 61,478 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,913 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 104,546 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,888 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 54,313 |
| Danube Countries | 0 | - | 4.96 | 57,262 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,258 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,321 |
| Countries with the Best Passports | 0 | - | 4.86 | 72,779 |
| Countries with the Worst Passports | 0 | - | 4.88 | 50,463 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 111,110 |
| European Landlocked Countries | 0 | - | 4.99 | 137,261 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,869 |
| Countries with the Most Species | 0 | - | 4.99 | 90,055 |
| Countries 197 to 205 | 0 | - | 4.87 | 57,408 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 45,044 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,338 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 49,102 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,912 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 59,150 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,972 |
| Countries in the Alps | 0 | - | 4.84 | 103,943 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,495 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 89,664 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,328 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,424 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,948 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,394 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,595 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,808 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,729 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,461 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 70,227 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 49,057 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 37,048 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,627 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,720 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,285 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 100,703 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,995 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 54,095 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 202,925 |
| World Countries - Blind Typing | 0 | - | 5.00 | 75,558 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,868 |
| Largest Countries By Category | 0 | - | 4.97 | 146,511 |
| Countries by Countries | 0 | - | 4.95 | 55,667 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,176,696 |
| Country Flags with the Most White | 0 | - | 4.90 | 126,628 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,240 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 45,160 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,707 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,231,941 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 345,314 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 362,988 |
| Island Countries Quiz | 0 | - | 4.99 | 669,037 |
| Biggest Countries by Area | 0 | - | 5.00 | 948,186 |
| Northernmost Countries | 0 | - | 4.99 | 331,057 |
| Countries of South America | 0 | - | 5.00 | 810,767 |
| Countries of Oceania | 0 | - | 5.00 | 914,577 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,613,091 |
| City to Country Quiz #2 | 0 | - | 4.74 | 91,696 |
| City to Country Quiz #5 | 0 | - | 4.76 | 75,551 |
| City to Country Quiz #6 | 0 | - | 4.54 | 60,539 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,155 |
| Countries with Megacities | 0 | - | 4.99 | 202,015 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,518 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 100,029 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,337 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,960 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,269 |
| Countries by Official Language | 0 | - | 4.96 | 175,337 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 253,650 |
| Countries in their Native Language | 0 | - | 4.98 | 180,703 |
| Independence from Whom | 0 | - | 4.99 | 189,511 |
| Subdivisions by Country | 0 | - | 4.84 | 46,922 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 115,734 |
| Megadiverse Countries | 0 | - | 4.96 | 126,848 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 94,030 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,621 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,850 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 133,410 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,923 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,714 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 146,067 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,753 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,870 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 45,113 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,290 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,976 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,516 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,429 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 66,064 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 86,707 |
| World Map Quiz | 0 | - | 4.90 | 51,557 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 118,728 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,787 |
| Southernmost Countries of the World | 0 | - | 4.99 | 209,868 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,889 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 110,240 |
| Countries With the Most Languages | 0 | - | 4.90 | 177,902 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,730 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 73,127 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 88,365 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 55,140 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,632 |
| Widest Countries East to West | 0 | - | 4.93 | 120,607 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,134 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,611 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,862 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,440 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,899 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,698 |
| Countries with the Most Desert | 0 | - | 4.92 | 106,526 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,812 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,427 |
| Countries with Double Letters | 0 | - | 4.96 | 72,111 |
| Countries that End in N | 0 | - | 4.94 | 136,356 |
| Countries with Five Letters Quiz | 0 | - | 4.97 | 234,162 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 190,829 |
| Countries with W | 0 | - | 4.96 | 125,918 |
| Countries with Z | 0 | - | 4.98 | 264,930 |
| Countries with Letters Missing | 0 | - | 4.97 | 169,832 |
| Countries That End in U | 0 | - | 4.95 | 109,533 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 92,575 |
| Countries that End in O | 0 | - | 4.92 | 148,771 |
| Countries that End in R | 0 | - | 4.85 | 97,390 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 148,353 |
| Countries Ending in "IA" | 0 | - | 4.99 | 174,351 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,789 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,755 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 130,689 |
| Countries That End in Y | 0 | - | 4.90 | 173,303 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 163,070 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 122,449 |
| Countries that End in I | 0 | - | 4.92 | 115,246 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 151,708 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,416 |
| Countries That End in NIA | 0 | - | 4.92 | 101,858 |
| Countries That End in BIA | 0 | - | 4.91 | 127,367 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 155,225 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 111,021 |
| Countries That End in RIA | 0 | - | 4.90 | 101,932 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,819 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 204,736 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 121,689 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 112,834 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 79,376 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,951 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,887 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 98,214 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,720 |
| Countries with the Word "And" | 0 | - | 4.98 | 85,129 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 42,556 |
| Countries that End in L | 0 | - | 4.95 | 135,904 |
| "Land" Countries | 0 | - | 4.98 | 292,428 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 191,340 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 82,908 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 211,186 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 171,100 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,861 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 134,975 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 196,492 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 142,622 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,640 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 103,355 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 83,305 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,409 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,329,546 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,528 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,119,390 |
| One Border Countries | 0 | - | 4.98 | 415,950 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.49 | 21,936 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,472,235 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,490 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,471 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,642 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,293 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,330 |
| Countries by National Anthem | 0 | - | 4.95 | 68,685 |
| NATO Countries Quiz | 0 | - | 4.98 | 229,436 |
| EU Countries Quiz | 0 | - | 4.99 | 231,486 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 146,549 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 78,564 |
| Countries That Use the Euro | 0 | - | 4.93 | 66,385 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 229,409 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 234,958 |
| German-Speaking Countries | 0 | - | 4.88 | 118,338 |
| Countries with Wild Tigers | 0 | - | 4.95 | 112,462 |
| Countries with Wild Penguins | 0 | - | 4.93 | 91,376 |
| Solve the Secret Country #1 | 0 | - | 4.95 | 135,212 |
