| City to Country Quiz #1 | 0 | - | 4.97 | 155,769 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,634 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,691 |
| Landlocked Countries | 0 | - | 4.99 | 417,552 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,238,621 |
| Historical City to Country | 0 | - | 4.84 | 78,374 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,346 |
| Himalayan Countries | 0 | - | 4.95 | 136,865 |
| Andean Countries | 0 | - | 4.95 | 83,654 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,916 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,236 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,585 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,170 |
| Danube Countries | 0 | - | 4.97 | 71,518 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,350 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,932 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,379 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,428 |
| European Landlocked Countries | 0 | - | 4.99 | 146,232 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,935 |
| Countries with the Most Species | 0 | - | 4.99 | 102,581 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,059 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,372 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,546 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,220 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,881 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,264 |
| Countries in the Alps | 0 | - | 4.86 | 117,478 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,998 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,105 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,333 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,836 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,937 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,352 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,112 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,072 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,880 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,423 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,416 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,261 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,823 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,085 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,097 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,924 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,967 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,491 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,354 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,590 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,872 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,898 |
| Largest Countries By Category | 0 | - | 4.97 | 157,423 |
| Countries by Countries | 0 | - | 4.96 | 62,709 |
| Country Flags with the Most White | 0 | - | 4.87 | 138,005 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,118 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,438 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,194 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,747,939 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,860 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,230 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,398 |
| Island Countries | 0 | - | 4.99 | 709,224 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,596 |
| Northernmost Countries | 0 | - | 4.99 | 359,895 |
| Countries of South America | 0 | - | 5.00 | 921,173 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,848 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,862,120 |
| "Land" Countries | 0 | - | 4.98 | 335,397 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,289 |
| City to Country Quiz #4 | 0 | - | 4.53 | 84,051 |
| City to Country Quiz #5 | 0 | - | 4.74 | 80,925 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,418 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,796 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,587 |
| Countries with Megacities | 0 | - | 4.99 | 249,605 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,438 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,735 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,780 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,698 |
| Countries by Official Language | 0 | - | 4.95 | 194,388 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,202 |
| Countries in their Native Language | 0 | - | 4.99 | 197,953 |
| Independence from Whom | 0 | - | 4.99 | 211,051 |
| Subdivisions by Country | 0 | - | 4.86 | 50,239 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,507 |
| Megadiverse Countries | 0 | - | 4.96 | 134,671 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,090 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,129 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,686 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,976 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,556 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,291 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,766 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,688 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,431 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,826 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,567 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,638 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,736 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,702 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,918 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,266 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,836 |
| World Map Quiz | 0 | - | 4.81 | 64,292 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,902 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,866 |
| Countries by Founding Story | 0 | - | 4.95 | 76,960 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,253 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,790 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,509 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,996 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,386 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,569 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,722 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,194 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,186 |
| Widest Countries East to West | 0 | - | 4.92 | 129,250 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,350 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,785 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,962 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,411 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,078 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,440 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,175 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,703 |
| Countries with Double Letters | 0 | - | 4.97 | 94,760 |
| Countries that End in N | 0 | - | 4.95 | 169,182 |
| Countries with Five Letters | 0 | - | 4.96 | 276,410 |
| Countries with Six Letters | 0 | - | 4.94 | 212,090 |
| Countries with W | 0 | - | 4.97 | 159,275 |
| Countries with Z | 0 | - | 4.98 | 289,437 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,479 |
| Countries That End in U | 0 | - | 4.95 | 120,271 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,497 |
| Countries that End in O | 0 | - | 4.92 | 159,085 |
| Countries that End in R | 0 | - | 4.87 | 118,644 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,421 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,067 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,939 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,958 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,548 |
| Countries That End in Y | 0 | - | 4.90 | 185,562 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,037 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,257 |
| Countries that End in I | 0 | - | 4.94 | 134,765 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,864 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,490 |
| Countries That End in NIA | 0 | - | 4.92 | 109,412 |
| Countries That End in BIA | 0 | - | 4.93 | 148,702 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,566 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,918 |
| Countries That End in RIA | 0 | - | 4.93 | 126,431 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,508 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,352 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,026 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,364 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,974 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,242 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,568 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,102 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,989 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,123 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,682 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,363 |
| Countries that End in L | 0 | - | 4.94 | 156,438 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,465 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,128 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,497 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,944 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,478 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,924 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,393 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,126 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,900 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,322 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,558 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,578 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,417 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,240 |
| One Border Countries | 0 | - | 4.98 | 466,993 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 22,973 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,817,523 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,608,897 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,398 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,121 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,487 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,172 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,210 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,771 |
| Countries by National Anthem | 0 | - | 4.92 | 71,153 |
| NATO Countries | 0 | - | 4.98 | 278,669 |
| EU Countries Quiz | 0 | - | 4.99 | 272,241 |
| Recently Independent Countries | 0 | - | 4.98 | 158,509 |
| French-Speaking Countries | 0 | - | 4.85 | 269,989 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,705 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,213 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,894 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,084 |
| German-Speaking Countries | 0 | - | 4.91 | 144,862 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,129 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,726 |
