| Landlocked Countries | 0 | - | 4.99 | 416,138 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,123,332 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,525 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,672 |
| Himalayan Countries | 0 | - | 4.95 | 136,281 |
| Andean Countries | 0 | - | 4.95 | 83,356 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,626 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,837 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,325 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,940 |
| Danube Countries | 0 | - | 4.97 | 71,341 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,126 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,797 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,039 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,991 |
| European Landlocked Countries | 0 | - | 4.99 | 146,059 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,671 |
| Countries with the Most Species | 0 | - | 4.99 | 98,712 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,819 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,307 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,481 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,124 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,769 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,139 |
| Countries in the Alps | 0 | - | 4.86 | 117,268 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,853 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,775 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,216 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,676 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,631 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,210 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,923 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,960 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,758 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,288 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,332 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,185 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,681 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,946 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,953 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,618 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,859 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,393 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,141 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,705 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,448 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,785 |
| Largest Countries By Category | 0 | - | 4.97 | 157,185 |
| Countries by Countries | 0 | - | 4.96 | 62,542 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,808 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,065 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,400 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,037 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,737,019 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,451 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,581 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,368 |
| Island Countries | 0 | - | 4.99 | 708,638 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,743 |
| Northernmost Countries | 0 | - | 4.99 | 359,119 |
| Countries of South America | 0 | - | 5.00 | 918,992 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,757 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,009 |
| "Land" Countries | 0 | - | 4.98 | 334,297 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,207 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,139 |
| Countries with Megacities | 0 | - | 4.99 | 248,665 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,005 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,471 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,386 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,421 |
| Countries by Official Language | 0 | - | 4.95 | 193,828 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,323 |
| Countries in their Native Language | 0 | - | 4.99 | 197,483 |
| Independence from Whom | 0 | - | 4.99 | 210,421 |
| Subdivisions by Country | 0 | - | 4.86 | 50,176 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,233 |
| Megadiverse Countries | 0 | - | 4.96 | 134,504 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,682 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,058 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,602 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,938 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,259 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,182 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,486 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,510 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,339 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,796 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,093 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,558 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,655 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,626 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,830 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,175 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,385 |
| World Map Quiz | 0 | - | 4.81 | 63,966 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,107 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,655 |
| Countries by Founding Story | 0 | - | 4.95 | 76,818 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,967 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,615 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,335 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,564 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,205 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,398 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,578 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,120 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,603 |
| Widest Countries East to West | 0 | - | 4.92 | 129,099 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,310 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,588 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,829 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,921 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,932 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,313 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,996 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,657 |
| Countries with Double Letters | 0 | - | 4.96 | 93,832 |
| Countries that End in N | 0 | - | 4.94 | 157,270 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,231 |
| Countries with Six Letters | 0 | - | 4.93 | 210,857 |
| Countries with W | 0 | - | 4.97 | 158,525 |
| Countries with Z | 0 | - | 4.98 | 288,416 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,865 |
| Countries That End in U | 0 | - | 4.95 | 119,669 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,025 |
| Countries that End in O | 0 | - | 4.92 | 158,701 |
| Countries that End in R | 0 | - | 4.87 | 118,418 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,973 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,586 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,648 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,732 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,300 |
| Countries That End in Y | 0 | - | 4.90 | 185,329 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,749 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,008 |
| Countries that End in I | 0 | - | 4.94 | 134,599 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,608 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,368 |
| Countries That End in NIA | 0 | - | 4.92 | 109,235 |
| Countries That End in BIA | 0 | - | 4.93 | 148,467 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,355 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,709 |
| Countries That End in RIA | 0 | - | 4.93 | 126,271 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,261 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,943 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,781 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,140 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,682 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,084 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,370 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,888 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,773 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,948 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,444 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,108 |
| Countries that End in L | 0 | - | 4.94 | 156,215 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,614 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,039 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,686 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,521 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,585 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,209 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,747 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,170 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,766 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,181 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,005 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,856 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,274 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,492 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,477 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,197 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,654 |
| One Border Countries | 0 | - | 4.98 | 466,164 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,811,414 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,601,618 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,239 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,790 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,260 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,046 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,046 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,596 |
| Countries by National Anthem | 0 | - | 4.92 | 71,100 |
| NATO Countries | 0 | - | 4.98 | 277,743 |
| EU Countries Quiz | 0 | - | 4.99 | 271,340 |
| Recently Independent Countries | 0 | - | 4.98 | 158,315 |
| French-Speaking Countries | 0 | - | 4.85 | 269,620 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,474 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,784 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,127 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,061 |
| German-Speaking Countries | 0 | - | 4.91 | 141,447 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,981 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,602 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,191 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,857 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,012 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 112,035 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,248 |
