| Landlocked Countries | 0 | - | 4.99 | 421,635 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,556,022 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,279 |
| Himalayan Countries | 0 | - | 4.95 | 138,571 |
| Andean Countries | 0 | - | 4.93 | 84,521 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,704 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,705 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,338 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,733 |
| Danube Countries | 0 | - | 4.97 | 71,961 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,966 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,382 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,227 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,709 |
| European Landlocked Countries | 0 | - | 4.99 | 147,090 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,569 |
| Countries with the Most Species | 0 | - | 4.99 | 103,200 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,701 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,568 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,705 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,516 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,195 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,618 |
| Countries in the Alps | 0 | - | 4.87 | 118,151 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,877 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,977 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,620 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,564 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,457 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,922 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,629 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,461 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,157 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,811 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,633 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,493 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,186 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,434 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,485 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,818 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,283 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,202 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,010 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,751 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,999 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,193 |
| Largest Countries By Category | 0 | - | 4.97 | 158,150 |
| Countries by Countries | 0 | - | 4.96 | 63,160 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,637 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,269 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,554 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,641 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,776,191 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,295 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,415 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,986 |
| Island Countries | 0 | - | 4.99 | 710,911 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,423 |
| Northernmost Countries | 0 | - | 4.99 | 361,799 |
| Countries of South America | 0 | - | 5.00 | 926,820 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,251 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,876,213 |
| "Land" Countries | 0 | - | 4.98 | 337,234 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,382,817 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,792 |
| Countries with Megacities | 0 | - | 4.99 | 264,356 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,651 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,419 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,921 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,487 |
| Countries by Official Language | 0 | - | 4.95 | 195,190 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,273 |
| Countries in their Native Language | 0 | - | 4.99 | 198,979 |
| Independence from Whom | 0 | - | 4.99 | 212,001 |
| Subdivisions by Country | 0 | - | 4.86 | 50,418 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,669 |
| Megadiverse Countries | 0 | - | 4.96 | 134,981 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,022 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,331 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,213 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,093 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,072 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,575 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,415 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,006 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,629 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,126 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,617 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,855 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,181 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,946 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,334 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,473 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,085 |
| World Map Quiz | 0 | - | 4.81 | 65,036 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,103 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,320 |
| Countries by Founding Story | 0 | - | 4.95 | 77,339 |
| Countries by Road Signs | 0 | - | 4.98 | 53,983 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,013 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,238 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,957 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,106 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,849 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,980 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,267 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,420 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,548 |
| Widest Countries East to West | 0 | - | 4.92 | 129,613 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,441 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,339 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,108 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,748 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,555 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,829 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,362 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,793 |
| Countries with Double Letters | 0 | - | 4.96 | 96,144 |
| Countries that End in N | 0 | - | 4.95 | 171,032 |
| Countries with Five Letters | 0 | - | 4.96 | 282,260 |
| Countries with Six Letters | 0 | - | 4.94 | 213,460 |
| Countries with W | 0 | - | 4.97 | 160,261 |
| Countries with Z | 0 | - | 4.98 | 291,344 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,624 |
| Countries That End in U | 0 | - | 4.95 | 120,814 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,385 |
| Countries that End in O | 0 | - | 4.92 | 159,485 |
| Countries that End in R | 0 | - | 4.87 | 118,946 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,703 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,001 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,639 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,435 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,353 |
| Countries That End in Y | 0 | - | 4.91 | 185,854 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,846 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,810 |
| Countries that End in I | 0 | - | 4.94 | 135,062 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,021 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,793 |
| Countries That End in NIA | 0 | - | 4.92 | 109,750 |
| Countries That End in BIA | 0 | - | 4.93 | 149,158 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,060 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,390 |
| Countries That End in RIA | 0 | - | 4.93 | 126,779 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,977 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,503 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,645 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,046 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,609 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,552 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,985 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,432 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,487 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,394 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,241 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,936 |
| Countries that End in L | 0 | - | 4.94 | 156,794 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,544 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,251 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,995 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,917 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,966 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,675 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,604 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,942 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,496 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,383 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,830 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,078 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,694 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,847 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,622 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,838 |
| One Border Countries | 0 | - | 4.98 | 469,680 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,833,468 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,630,388 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,865 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,111 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,091 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,525 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,692 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,193 |
| Countries by National Anthem | 0 | - | 4.93 | 71,282 |
| NATO Countries | 0 | - | 4.98 | 281,318 |
| EU Countries Quiz | 0 | - | 4.99 | 275,248 |
| Recently Independent Countries | 0 | - | 4.98 | 159,431 |
| French-Speaking Countries | 0 | - | 4.85 | 270,777 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,882 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,413 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,119 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,155 |
| German-Speaking Countries | 0 | - | 4.91 | 145,702 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,939 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,265 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,204 |
| Top Five Countries by Religion | 0 | - | 4.93 | 172,097 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,786 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,975 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 112,478 |
| Olympic Host Countries | 0 | - | 4.98 | 201,035 |
