| World Map Quiz | 0 | - | 4.81 | 65,411 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,763,335 |
| Landlocked Countries | 0 | - | 4.99 | 424,225 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,794,714 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,516 |
| Himalayan Countries | 0 | - | 4.94 | 139,677 |
| Andean Countries | 0 | - | 4.94 | 85,137 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,317 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,561 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,891 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,171 |
| Danube Countries | 0 | - | 4.97 | 72,250 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,380 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,680 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,803 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,290 |
| European Landlocked Countries | 0 | - | 4.99 | 147,429 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,041 |
| Countries with the Most Species | 0 | - | 4.99 | 103,454 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,174 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,700 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,810 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,723 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,454 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,877 |
| Countries in the Alps | 0 | - | 4.87 | 118,538 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,219 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,551 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,842 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,852 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,776 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,116 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,963 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,706 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,328 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,041 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,780 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,644 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,423 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,663 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,749 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,448 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,497 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,449 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,447 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,098 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,773 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,410 |
| Largest Countries By Category | 0 | - | 4.97 | 158,601 |
| Countries by Countries | 0 | - | 4.96 | 63,481 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,052 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,359 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,637 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,244 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,953 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,758 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,230 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,783 |
| Island Countries | 0 | - | 4.99 | 711,961 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,981 |
| Northernmost Countries | 0 | - | 4.99 | 363,299 |
| Countries of South America | 0 | - | 5.00 | 930,533 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,944 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,696 |
| "Land" Countries | 0 | - | 4.98 | 337,997 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,092 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 137,073 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,283 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,706 |
| Countries with Megacities | 0 | - | 4.99 | 266,210 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,432 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,851 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,723 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,967 |
| Countries by Official Language | 0 | - | 4.95 | 195,739 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,241 |
| Countries in their Native Language | 0 | - | 4.99 | 199,506 |
| Independence from Whom | 0 | - | 4.99 | 212,692 |
| Subdivisions by Country | 0 | - | 4.87 | 50,550 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,172 |
| Megadiverse Countries | 0 | - | 4.96 | 135,178 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,719 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,472 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,369 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,176 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,413 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,734 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,853 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,494 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,767 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,218 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,146 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,294 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,360 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,077 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,500 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,616 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,952 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,487 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,556 |
| Countries by Founding Story | 0 | - | 4.95 | 77,636 |
| Countries by Road Signs | 0 | - | 4.98 | 54,236 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,935 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,910 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,409 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,163 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,264 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,385 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,582 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,612 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,881 |
| Widest Countries East to West | 0 | - | 4.92 | 130,285 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,554 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,075 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,455 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,964 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,839 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,340 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,459 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,860 |
| Countries with Double Letters | 0 | - | 4.96 | 96,761 |
| Countries that End in N | 0 | - | 4.95 | 171,649 |
| Countries with Five Letters | 0 | - | 4.96 | 283,341 |
| Countries with Six Letters | 0 | - | 4.94 | 214,110 |
| Countries with W | 0 | - | 4.96 | 160,713 |
| Countries with Z | 0 | - | 4.98 | 292,074 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,068 |
| Countries That End in U | 0 | - | 4.95 | 121,060 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,867 |
| Countries that End in O | 0 | - | 4.92 | 159,708 |
| Countries that End in R | 0 | - | 4.87 | 119,101 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,847 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,544 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,980 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,694 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,620 |
| Countries That End in Y | 0 | - | 4.91 | 186,016 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,252 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,117 |
| Countries that End in I | 0 | - | 4.94 | 135,240 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,432 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,960 |
| Countries That End in NIA | 0 | - | 4.92 | 109,948 |
| Countries That End in BIA | 0 | - | 4.93 | 149,436 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,374 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,648 |
| Countries That End in RIA | 0 | - | 4.93 | 126,964 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,253 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,200 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,005 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,436 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,991 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,722 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,222 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,504 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,759 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,571 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,557 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,255 |
| Countries that End in L | 0 | - | 4.94 | 157,019 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,897 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,314 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,176 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,111 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,152 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,175 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,971 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,329 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,100 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,791 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,092 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,186 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,771 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,149 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,873 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,918 |
| One Border Countries | 0 | - | 4.98 | 471,207 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,176 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,050 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,261 |
| Asia Map Quiz | 0 | - | 4.99 | 923,241 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,843,445 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.87 | 89,357 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,645,503 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,617 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,171 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,708 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,495 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,778 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,051 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,454 |
| Countries by National Anthem | 0 | - | 4.92 | 71,368 |
| NATO Countries | 0 | - | 4.98 | 282,702 |
| EU Countries Quiz | 0 | - | 4.99 | 276,991 |
| Recently Independent Countries | 0 | - | 4.98 | 159,761 |
| French-Speaking Countries | 0 | - | 4.85 | 271,393 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,991 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,328 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,492 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,933 |
