| City to Country Quiz #1 | 0 | - | 4.97 | 155,824 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,701 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,753 |
| Landlocked Countries | 0 | - | 4.99 | 418,665 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,317,714 |
| Historical City to Country | 0 | - | 4.84 | 78,424 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,866 |
| Himalayan Countries | 0 | - | 4.94 | 137,308 |
| Andean Countries | 0 | - | 4.95 | 83,873 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,146 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,552 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,791 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,313 |
| Danube Countries | 0 | - | 4.97 | 71,624 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,509 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,029 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,593 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,666 |
| European Landlocked Countries | 0 | - | 4.99 | 146,741 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,095 |
| Countries with the Most Species | 0 | - | 4.99 | 102,879 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,226 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,424 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,576 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,286 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,962 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,343 |
| Countries in the Alps | 0 | - | 4.87 | 117,641 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,105 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,317 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,390 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,958 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,059 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,427 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,248 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,161 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,947 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,529 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,459 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,324 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,902 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,174 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,186 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,133 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,045 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,556 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,486 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,258 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,162 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,980 |
| Largest Countries By Category | 0 | - | 4.97 | 157,590 |
| Countries by Countries | 0 | - | 4.96 | 62,816 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,168 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,153 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,465 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,300 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,755,286 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,759 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,531 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,966 |
| Island Countries | 0 | - | 4.99 | 709,641 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,794 |
| Northernmost Countries | 0 | - | 4.99 | 360,364 |
| Countries of South America | 0 | - | 5.00 | 922,583 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,597 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,608 |
| "Land" Countries | 0 | - | 4.98 | 335,739 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,320 |
| City to Country Quiz #4 | 0 | - | 4.53 | 84,085 |
| City to Country Quiz #5 | 0 | - | 4.74 | 80,954 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,179 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,942 |
| Countries with Megacities | 0 | - | 4.99 | 257,992 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,815 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,940 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,100 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,952 |
| Countries by Official Language | 0 | - | 4.95 | 194,596 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,468 |
| Countries in their Native Language | 0 | - | 4.99 | 198,139 |
| Independence from Whom | 0 | - | 4.99 | 211,251 |
| Subdivisions by Country | 0 | - | 4.86 | 50,275 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,656 |
| Megadiverse Countries | 0 | - | 4.96 | 134,750 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,514 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,173 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,735 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,007 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,678 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,361 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,940 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,828 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,469 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,978 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,899 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,700 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,973 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,758 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,129 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,309 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,127 |
| World Map Quiz | 0 | - | 4.81 | 64,485 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,504 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,010 |
| Countries by Founding Story | 0 | - | 4.95 | 77,044 |
| Countries by Road Signs | 0 | - | 4.98 | 53,632 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,456 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,902 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,615 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,275 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,494 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,653 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,806 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,248 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,261 |
| Widest Countries East to West | 0 | - | 4.92 | 129,343 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,376 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,931 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,984 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,497 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,189 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,524 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,222 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,724 |
| Countries with Double Letters | 0 | - | 4.97 | 95,047 |
| Countries that End in N | 0 | - | 4.95 | 169,910 |
| Countries with Five Letters | 0 | - | 4.96 | 279,900 |
| Countries with Six Letters | 0 | - | 4.94 | 212,431 |
| Countries with W | 0 | - | 4.97 | 159,496 |
| Countries with Z | 0 | - | 4.98 | 289,752 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,696 |
| Countries That End in U | 0 | - | 4.95 | 120,396 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,718 |
| Countries that End in O | 0 | - | 4.92 | 159,181 |
| Countries that End in R | 0 | - | 4.87 | 118,726 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,501 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,277 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,078 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,064 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,651 |
| Countries That End in Y | 0 | - | 4.90 | 185,639 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,194 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,395 |
| Countries that End in I | 0 | - | 4.94 | 134,852 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,043 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,565 |
| Countries That End in NIA | 0 | - | 4.92 | 109,499 |
| Countries That End in BIA | 0 | - | 4.93 | 148,824 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,685 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,026 |
| Countries That End in RIA | 0 | - | 4.93 | 126,518 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,602 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,625 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,189 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,534 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,084 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,298 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,657 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,215 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,099 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,184 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,802 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,510 |
| Countries that End in L | 0 | - | 4.94 | 156,529 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,911 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,151 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,736 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,132 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,590 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,085 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,582 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,565 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,941 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,589 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,645 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,960 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,630 |
| One Border Countries | 0 | - | 4.98 | 467,542 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 22,984 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,821,771 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,613,939 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,534 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,357 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,656 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,249 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,346 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,908 |
| Countries by National Anthem | 0 | - | 4.93 | 71,173 |
| NATO Countries | 0 | - | 4.98 | 279,198 |
| EU Countries Quiz | 0 | - | 4.99 | 272,823 |
| Recently Independent Countries | 0 | - | 4.98 | 158,988 |
| French-Speaking Countries | 0 | - | 4.85 | 270,175 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,749 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,513 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,384 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,811 |
| German-Speaking Countries | 0 | - | 4.91 | 145,285 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,225 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,789 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,046 |
