| Landmarks of Countries #1 | 0 | - | 4.88 | 107,439 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,943,146 |
| Landlocked Countries | 0 | - | 4.99 | 413,864 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,719,296 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,694 |
| Himalayan Countries | 0 | - | 4.95 | 135,455 |
| Andean Countries | 0 | - | 4.94 | 82,865 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,258 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,266 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,950 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,638 |
| Danube Countries | 0 | - | 4.97 | 71,102 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,794 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,559 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,531 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,456 |
| European Landlocked Countries | 0 | - | 4.99 | 145,784 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,247 |
| Countries with the Most Species | 0 | - | 4.99 | 95,256 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,391 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,205 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,377 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,971 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,593 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,968 |
| Countries in the Alps | 0 | - | 4.86 | 116,866 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,589 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,300 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,027 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,443 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,203 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,028 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,604 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,780 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,406 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,089 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,202 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,055 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,467 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,777 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,773 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,126 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,670 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,270 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,802 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,449 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,760 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,618 |
| Largest Countries By Category | 0 | - | 4.97 | 156,804 |
| Countries by Countries | 0 | - | 4.96 | 62,280 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,434 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,973 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,339 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,793 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,417 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,201 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,996 |
| Island Countries | 0 | - | 4.99 | 707,727 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,840 |
| Northernmost Countries | 0 | - | 4.99 | 357,887 |
| Countries of South America | 0 | - | 5.00 | 915,288 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,120 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,849,458 |
| "Land" Countries | 0 | - | 4.98 | 333,718 |
| Landmarks of Countries #2 | 0 | - | 4.51 | 54,101 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,083 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,444 |
| Countries with Megacities | 0 | - | 4.99 | 247,263 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,288 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,093 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,714 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,019 |
| Countries by Official Language | 0 | - | 4.95 | 192,824 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,193 |
| Countries in their Native Language | 0 | - | 4.99 | 196,687 |
| Independence from Whom | 0 | - | 4.99 | 209,770 |
| Subdivisions by Country | 0 | - | 4.86 | 50,080 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,815 |
| Megadiverse Countries | 0 | - | 4.97 | 133,927 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,852 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,930 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,439 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,867 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,701 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,023 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,091 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,172 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,227 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,752 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,642 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,509 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,514 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,702 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,035 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,657 |
| World Map Quiz | 0 | - | 4.81 | 63,530 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,838 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,358 |
| Countries by Founding Story | 0 | - | 4.95 | 76,575 |
| Countries by Road Signs | 0 | - | 4.98 | 53,126 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,414 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,027 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,975 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,847 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,891 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,091 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,301 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,959 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,352 |
| Widest Countries East to West | 0 | - | 4.92 | 128,629 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,220 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,260 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,585 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,709 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,662 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,078 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,056 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,592 |
| Countries with Double Letters | 0 | - | 4.97 | 93,437 |
| Countries that End in N | 0 | - | 4.94 | 156,935 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,741 |
| Countries with Six Letters | 0 | - | 4.93 | 210,410 |
| Countries with W | 0 | - | 4.97 | 158,265 |
| Countries with Z | 0 | - | 4.98 | 287,937 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,590 |
| Countries That End in U | 0 | - | 4.95 | 119,536 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,626 |
| Countries that End in O | 0 | - | 4.92 | 158,574 |
| Countries that End in R | 0 | - | 4.87 | 118,289 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,869 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,124 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,370 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,522 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,057 |
| Countries That End in Y | 0 | - | 4.90 | 185,222 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,419 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,720 |
| Countries that End in I | 0 | - | 4.94 | 134,438 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,251 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,216 |
| Countries That End in NIA | 0 | - | 4.92 | 109,025 |
| Countries That End in BIA | 0 | - | 4.92 | 147,735 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,100 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,509 |
| Countries That End in RIA | 0 | - | 4.93 | 126,105 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,035 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,243 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,546 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,908 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,391 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,948 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,150 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,677 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,540 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,824 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,181 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,853 |
| Countries that End in L | 0 | - | 4.94 | 155,767 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,389 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,996 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,535 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,324 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,448 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,168 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,149 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,938 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,233 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,440 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,552 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,634 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,175 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,426 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,345 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,584 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,782 |
| One Border Countries | 0 | - | 4.98 | 464,617 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,802,240 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,589,343 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,658 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,881 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,030 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,940 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,520 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,661 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,332 |
| Countries by National Anthem | 0 | - | 4.93 | 71,038 |
| NATO Countries | 0 | - | 4.98 | 275,981 |
| EU Countries Quiz | 0 | - | 4.99 | 270,110 |
| Recently Independent Countries | 0 | - | 4.98 | 158,026 |
| French-Speaking Countries | 0 | - | 4.85 | 268,865 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,385 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,102 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,092 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,529 |
| German-Speaking Countries | 0 | - | 4.89 | 123,519 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,632 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,329 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,286 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,138 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,205 |
