| City to Country Quiz #1 | 0 | - | 4.94 | 134,955 |
| City to Country Quiz #3 | 0 | - | 4.87 | 100,744 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,252 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 330,920 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,469,191 |
| Historical City to Country | 0 | - | 4.82 | 72,794 |
| Members of the Arab League | 0 | - | 4.85 | 64,971 |
| Sahara Desert Countries | 0 | - | 4.97 | 129,216 |
| Himalayan Countries | 0 | - | 4.94 | 107,183 |
| Andean Countries | 0 | - | 4.91 | 59,628 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,699 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,409 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,790 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,617 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,931 |
| Danube Countries | 0 | - | 4.96 | 57,044 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,059 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,149 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,208 |
| Countries with the Worst Passports | 0 | - | 4.88 | 50,060 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,349 |
| European Landlocked Countries | 0 | - | 4.99 | 136,703 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,467 |
| Countries with the Most Species | 0 | - | 4.99 | 89,750 |
| Countries 197 to 205 | 0 | - | 4.87 | 56,961 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,909 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,209 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,786 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,720 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,981 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,636 |
| Countries in the Alps | 0 | - | 4.84 | 103,443 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,059 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,629 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,038 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,106 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,598 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,076 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,232 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,563 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,571 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,161 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,916 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,868 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,905 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,280 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,428 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,010 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,683 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,738 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,822 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 200,127 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,429 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,651 |
| Largest Countries By Category | 0 | - | 4.97 | 145,934 |
| Countries by Countries | 0 | - | 4.96 | 55,266 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,136,267 |
| Country Flags with the Most White | 0 | - | 4.90 | 125,595 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,041 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,104 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,202,184 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,455 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 360,020 |
| Island Countries Quiz | 0 | - | 4.99 | 665,780 |
| Biggest Countries by Area | 0 | - | 5.00 | 942,117 |
| Northernmost Countries | 0 | - | 4.99 | 329,840 |
| Countries of South America | 0 | - | 5.00 | 804,130 |
| Countries of Oceania | 0 | - | 5.00 | 906,323 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,597,371 |
| City to Country Quiz #2 | 0 | - | 4.74 | 91,267 |
| City to Country Quiz #4 | 0 | - | 4.51 | 77,619 |
| City to Country Quiz #5 | 0 | - | 4.75 | 75,274 |
| City to Country Quiz #6 | 0 | - | 4.54 | 60,296 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,970 |
| Countries with Megacities | 0 | - | 4.99 | 200,297 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,830 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,203 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 97,336 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,194 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 251,187 |
| Countries by Official Language | 0 | - | 4.96 | 174,438 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,702 |
| Countries in their Native Language | 0 | - | 4.98 | 179,593 |
| Independence from Whom | 0 | - | 4.99 | 187,933 |
| Subdivisions by Country | 0 | - | 4.82 | 46,745 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,847 |
| Megadiverse Countries | 0 | - | 4.96 | 126,263 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,746 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,251 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,676 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,524 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,602 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,019 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,770 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,462 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,713 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 44,619 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,024 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,671 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,199 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,108 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,743 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 84,846 |
| World Map Quiz | 0 | - | 4.91 | 50,701 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 116,688 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 82,294 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,857 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,094 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,333 |
| Countries With the Most Languages | 0 | - | 4.91 | 176,202 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,317 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,604 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,679 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,712 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,183 |
| Widest Countries East to West | 0 | - | 4.93 | 120,148 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,028 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,988 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,489 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,068 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,263 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,190 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,863 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,678 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,287 |
| Countries with Double Letters | 0 | - | 4.96 | 70,590 |
| Countries that End in N | 0 | - | 4.94 | 134,820 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 232,167 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 189,406 |
| Countries with W | 0 | - | 4.96 | 124,724 |
| Countries with Z | 0 | - | 4.98 | 260,363 |
| Countries with Letters Missing | 0 | - | 4.97 | 168,764 |
| Countries That End in U | 0 | - | 4.95 | 108,699 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 91,380 |
| Countries that End in O | 0 | - | 4.92 | 148,156 |
| Countries that End in R | 0 | - | 4.84 | 97,028 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,794 |
| Countries Ending in "IA" | 0 | - | 4.99 | 173,046 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,121 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,274 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 130,215 |
| Countries That End in Y | 0 | - | 4.90 | 162,110 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,287 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 121,907 |
| Countries that End in I | 0 | - | 4.92 | 114,961 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 150,814 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,071 |
| Countries That End in NIA | 0 | - | 4.93 | 101,485 |
| Countries That End in BIA | 0 | - | 4.91 | 126,901 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 154,549 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 110,535 |
| Countries That End in RIA | 0 | - | 4.90 | 101,586 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,268 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 203,345 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 120,952 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 112,022 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 78,619 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,409 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 97,647 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,384 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 41,842 |
| Countries that End in L | 0 | - | 4.95 | 135,394 |
| "Land" Countries | 0 | - | 4.98 | 291,528 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 190,658 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,328 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 210,095 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 169,263 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,332 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 134,222 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 195,498 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,803 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,354 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 102,945 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,943 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,066 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,322,486 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 352,113 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,098,502 |
| One Border Countries | 0 | - | 4.98 | 413,424 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,510 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.48 | 21,850 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,443,271 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,979 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 247,150 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,013 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 103,976 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 71,631 |
| Countries by National Anthem | 0 | - | 4.95 | 62,077 |
| NATO Countries Quiz | 0 | - | 4.98 | 228,073 |
| EU Countries Quiz | 0 | - | 4.99 | 230,197 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 145,651 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 78,203 |
| Countries That Use the Euro | 0 | - | 4.93 | 65,036 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 228,295 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 233,005 |
| German-Speaking Countries | 0 | - | 4.88 | 118,015 |
| Countries with Wild Tigers | 0 | - | 4.95 | 112,038 |
| Countries with Wild Penguins | 0 | - | 4.93 | 91,017 |
| Solve the Secret Country #1 | 0 | - | 4.95 | 133,174 |
| Top Five Countries by Religion | 0 | - | 4.90 | 144,624 |
