| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 115,953 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,176 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,501 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,469 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,519 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,614 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,632,073 |
| African Great Lakes | 0 | - | 4.82 | 66,500 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,105,140 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,506 |
| Countries with Four Letters | 0 | - | 4.99 | 423,278 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,960 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,284 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,308 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,890 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,770 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,291 |
| Landforms by Country | 0 | - | 4.52 | 51,980 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,961 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,897 |
| Capitals by River | 0 | - | 4.55 | 48,341 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,580,857 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 321,690 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,815 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,229 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 722,614 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,042 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,310 |
| Country Chain | 0 | - | 4.96 | 217,380 |
| South China Sea Countries | 0 | - | 4.78 | 57,749 |
| Countries by Emojis | 0 | - | 4.99 | 240,352 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,097 |
| Countries in Squares of the World Map | 0 | - | 5.00 | 184,813 |
| Islands by Country #1 | 0 | - | 4.88 | 175,469 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,630 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,025 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,801 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 217,357 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,376 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,613 |
| Name a Valid Country #1 | 0 | - | 4.99 | 291,175 |
| Name a Valid Country #2 | 0 | - | 4.98 | 251,430 |
| Name a Valid Country #4 | 0 | - | 4.97 | 256,593 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,617 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,945 |
| Name a Valid Country #7 | 0 | - | 4.91 | 129,692 |
| Rivers of the United States | 0 | - | 4.93 | 66,316 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 33,015 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,727 |
| Landlocked Countries | 0 | - | 4.99 | 421,945 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,154 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,337 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,261 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,852 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,596 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,926 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,339 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,644 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,565 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,601 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,112 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 140,122 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 80,086 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,648 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,186 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,778,498 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,238 |
| Random Countries by Borders | 0 | - | 4.99 | 82,618 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,400 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 138,592 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 384,739 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,793 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,551 |
| Name a World Capital A-Z | 0 | - | 5.00 | 176,451 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,493 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,225 |
| Island Countries | 0 | - | 4.99 | 711,044 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,433 |
| Himalayan Countries | 0 | - | 4.94 | 138,710 |
| Andean Countries | 0 | - | 4.93 | 84,599 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,794 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,810 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,418 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,802 |
| Danube Countries | 0 | - | 4.97 | 72,005 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,012 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,420 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,299 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,778 |
| European Landlocked Countries | 0 | - | 4.99 | 147,141 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,639 |
| Countries with the Most Species | 0 | - | 4.99 | 103,244 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,758 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,592 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,721 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,541 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,226 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,659 |
| Countries in the Alps | 0 | - | 4.87 | 118,199 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,111 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,033 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,641 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,596 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,507 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,945 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,671 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,487 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,176 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,843 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,652 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,525 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,219 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,464 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,520 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,902 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,307 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 63,764 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,071 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,930 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,100 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,230 |
| Largest Countries By Category | 0 | - | 4.97 | 158,207 |
| Countries by Countries | 0 | - | 4.96 | 63,220 |
| Top 10 African Countries by Coastline | 0 | - | 4.29 | 47,947 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,627 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,681 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,285 |
| Random Countries Hidden in the World Map | 0 | - | 4.82 | 113,555 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,565 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,673 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,834 |
| Northernmost Countries | 0 | - | 4.99 | 361,952 |
| Countries of South America | 0 | - | 5.00 | 927,296 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,806 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,195 |
| "Land" Countries | 0 | - | 4.98 | 337,329 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,807 |
| Countries Closest to the Aegean Sea | 0 | - | 4.75 | 66,928 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,315 |
| Sea in the Answers | 0 | - | 4.08 | 49,018 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,132 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,963 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,881 |
| Countries with Megacities | 0 | - | 4.99 | 264,540 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,735 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,466 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,992 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,538 |
| Countries by Official Language | 0 | - | 4.95 | 195,240 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,367 |
| Countries in their Native Language | 0 | - | 4.99 | 199,037 |
| Independence from Whom | 0 | - | 4.99 | 212,085 |
| Subdivisions by Country | 0 | - | 4.86 | 50,430 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,721 |
| Megadiverse Countries | 0 | - | 4.96 | 135,008 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,082 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,346 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,234 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,099 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,135 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,595 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,464 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,030 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,655 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,145 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,665 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,879 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,200 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,963 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,346 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,494 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,174 |
| World Map Quiz | 0 | - | 4.81 | 65,081 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,282 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,345 |
| Countries by Founding Story | 0 | - | 4.95 | 77,363 |
| Countries by Road Signs | 0 | - | 4.98 | 54,007 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,092 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,275 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,994 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,182 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,885 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,005 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,297 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,437 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,570 |
| Widest Countries East to West | 0 | - | 4.92 | 129,642 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,456 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,374 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,117 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,766 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,596 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,868 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,371 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,796 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 337,032 |
| Countries with Double Letters | 0 | - | 4.96 | 96,231 |
| Countries that End in N | 0 | - | 4.95 | 171,107 |
| Countries with Five Letters | 0 | - | 4.96 | 282,437 |
| Countries with Six Letters | 0 | - | 4.94 | 213,539 |
