| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,404,223 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,256,742 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 98,158 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 135,013 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 58,397 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,631,180 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 382,105 |
| Countries of the World Quiz | 0 | - | 5.00 | 44,296,622 |
| Countries of the World in 1900 | 0 | - | 4.88 | 76,035 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 183,374 |
| All Countries by Northernmost Point on Land | 0 | - | 4.89 | 117,891 |
| 20 Countries on an Empty Map #1 | 0 | - | 4.95 | 58,677 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 139,939 |
| Sahara Desert Countries | 0 | - | 4.97 | 145,347 |
| Himalayan Countries | 0 | - | 4.95 | 122,009 |
| Andean Countries | 0 | - | 4.92 | 68,567 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 56,578 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 112,909 |
| Coffee Producing Countries | 0 | - | 4.83 | 59,797 |
| Countries with Shrinking Populations | 0 | - | 4.92 | 59,201 |
| Danube Countries | 0 | - | 4.97 | 60,785 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 96,778 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 81,831 |
| Countries with the Best Passports | 0 | - | 4.81 | 80,377 |
| Countries with the Worst Passports | 0 | - | 4.92 | 64,627 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 138,025 |
| European Landlocked Countries | 0 | - | 4.99 | 140,957 |
| Partially Recognized Countries | 0 | - | 4.98 | 97,987 |
| Countries with the Most Species | 0 | - | 4.99 | 92,301 |
| Countries 197 to 205 | 0 | - | 4.87 | 63,389 |
| Tropic of Cancer Countries | 0 | - | 4.95 | 46,666 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,770 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 52,541 |
| Countries that Use the Peso | 0 | - | 4.88 | 56,301 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,916 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 53,599 |
| Countries in the Alps | 0 | - | 4.86 | 110,367 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 90,648 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 97,695 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 75,343 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 83,673 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 110,571 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,907 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 94,946 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,802 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,935 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 58,738 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 72,695 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 51,225 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.89 | 39,077 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 100,117 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,806 |
| Countries with the Most Grassland | 0 | - | 4.93 | 73,470 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 108,892 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,759 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,688 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 221,820 |
| World Countries - Blind Typing | 0 | - | 5.00 | 94,957 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 45,061 |
| Largest Countries By Category | 0 | - | 4.97 | 151,283 |
| Countries by Countries | 0 | - | 4.96 | 58,425 |
| Country Flags with the Most White | 0 | - | 4.87 | 132,031 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,646 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.86 | 46,316 |
| All Countries by Population With a Map | 0 | - | 4.98 | 94,028 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 82,845 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 83,895 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,472,310 |
| Pixelated World Map | 0 | - | 5.00 | 136,645 |
| Countries of Europe in 1444 | 0 | - | 4.93 | 93,986 |
| Countries of the World in 1444 | 0 | - | 4.98 | 56,249 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.82 | 53,582 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 76,782 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 360,084 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 382,186 |
| Island Countries Quiz | 0 | - | 4.99 | 690,610 |
| Biggest Countries by Area | 0 | - | 5.00 | 989,434 |
| Northernmost Countries | 0 | - | 4.99 | 342,659 |
| Countries of South America | 0 | - | 5.00 | 862,477 |
| Countries of Oceania | 0 | - | 5.00 | 975,163 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,730,012 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 158,812 |
| Countries with Megacities | 0 | - | 4.99 | 217,989 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 186,687 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 106,229 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 126,643 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 73,207 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 269,861 |
| Global Cities on a World Map | 0 | - | 4.94 | 97,359 |
| Countries by Official Language | 0 | - | 4.95 | 184,057 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 282,040 |
| Countries in their Native Language | 0 | - | 4.98 | 188,851 |
| Independence from Whom | 0 | - | 4.99 | 199,846 |
| Subdivisions by Country | 0 | - | 4.86 | 48,523 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 123,733 |
| Megadiverse Countries | 0 | - | 4.96 | 130,492 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 122,126 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 121,694 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 49,325 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 155,444 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 59,477 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 86,799 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 149,009 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 80,419 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,419 |
| Countries by Sports League Revenue | 0 | - | 4.93 | 67,424 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,863 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,957 |
| Countries with the Highest HDI | 0 | - | 4.95 | 134,211 |
| Straight Shot to the Arctic Circle | 0 | - | 4.89 | 72,166 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 68,623 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 101,227 |
| World Map Quiz | 0 | - | 4.87 | 57,681 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 86,736 |
| Countries by Founding Story | 0 | - | 4.94 | 72,865 |
| Countries by Road Signs | 0 | - | 4.98 | 49,599 |
| Southernmost Countries of the World | 0 | - | 4.99 | 218,619 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 98,764 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 116,602 |
| Countries With the Most Languages | 0 | - | 4.89 | 189,260 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 92,549 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 88,586 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 93,607 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 58,373 |
| Tallest Countries North to South | 0 | - | 4.85 | 115,617 |
| Widest Countries East to West | 0 | - | 4.92 | 124,763 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,201 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 179,695 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,456 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 90,289 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 125,433 |
| Countries with the Most Desert | 0 | - | 4.93 | 123,349 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 68,038 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 33,558 |
| Countries With the Tallest People | 0 | - | 4.91 | 92,572 |
| Countries with Double Letters | 0 | - | 4.96 | 82,333 |
| Countries that End in N | 0 | - | 4.93 | 146,237 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 246,192 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 200,642 |
| Countries with W | 0 | - | 4.97 | 148,921 |
| Countries with Z | 0 | - | 4.98 | 276,127 |
| Countries with Letters Missing | 0 | - | 4.97 | 176,585 |
| Countries That End in U | 0 | - | 4.95 | 114,392 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 100,655 |
| Countries that End in O | 0 | - | 4.91 | 154,491 |
| Countries that End in R | 0 | - | 4.84 | 99,992 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 151,978 |
| Countries Ending in "IA" | 0 | - | 4.99 | 198,219 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 163,405 |
| Countries by Last Two Letters | 0 | - | 4.87 | 121,904 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 135,670 |
| Countries That End in Y | 0 | - | 4.91 | 182,169 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 189,336 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 127,570 |
| Countries that End in I | 0 | - | 4.92 | 117,484 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 158,468 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 92,246 |
| Countries That End in NIA | 0 | - | 4.92 | 105,161 |
| Countries That End in BIA | 0 | - | 4.92 | 142,800 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 161,330 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 114,817 |
| Countries That End in RIA | 0 | - | 4.89 | 105,514 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 105,968 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 215,424 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 127,326 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 119,169 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 85,024 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 71,242 |
| Countries With One Word and Three A's | 0 | - | 4.94 | 48,654 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 98,167 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 120,067 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 46,303 |
| Countries with the Word "And" | 0 | - | 4.98 | 89,916 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 47,831 |
| Countries that End in L | 0 | - | 4.94 | 151,850 |
| "Land" Countries | 0 | - | 4.98 | 299,741 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 197,632 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,954 |
| City to Country Quiz #1 | 0 | - | 4.96 | 150,604 |
| City to Country Quiz #3 | 0 | - | 4.87 | 104,771 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 75,648 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 219,280 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 192,441 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 122,104 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 140,904 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 215,991 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.97 | 147,208 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 68,738 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.82 | 105,993 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 84,873 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 59,807 |
| ALL First-Level Subdivisions of the World With a Map | 0 | - | 5.00 | 129,686 |
| All First-Level Subdivisions of Europe by Proximity | 0 | - | 4.83 | 72,039 |
| Top World Languages on a Map | 0 | - | 4.92 | 98,069 |
| Official Languages of the World on the Disappearing World Map | 0 | - | 4.98 | 108,249 |
| 407 Islands on the World Map | 0 | - | 4.98 | 31,759 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 43,412 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,381,354 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 364,774 |
| One Border Countries | 0 | - | 4.98 | 445,020 |
