| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 115,925 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,631,017 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,104,693 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,947 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,270 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,428 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,243 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,815 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,737 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,282 |
| Countries with Four Letters | 0 | - | 4.99 | 423,188 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,919 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,872 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,564,681 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,168 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,487 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,463 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,514 |
| Landlocked Countries | 0 | - | 4.99 | 421,729 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 321,612 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 722,399 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,994 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,231 |
| Country Chain | 0 | - | 4.96 | 217,349 |
| Countries by Emojis | 0 | - | 4.99 | 240,259 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,078 |
| Islands by Country #1 | 0 | - | 4.88 | 175,443 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,617 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,007 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,788 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,777,135 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 217,288 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,363 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,551 |
| Name a Valid Country #1 | 0 | - | 4.99 | 291,027 |
| Name a Valid Country #2 | 0 | - | 4.98 | 251,353 |
| Name a Valid Country #4 | 0 | - | 4.97 | 256,512 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,543 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,889 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 33,008 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,722 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,328 |
| Himalayan Countries | 0 | - | 4.95 | 138,615 |
| Andean Countries | 0 | - | 4.93 | 84,548 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,738 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,738 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,373 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,760 |
| Danube Countries | 0 | - | 4.97 | 71,977 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,985 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,396 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,255 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,728 |
| European Landlocked Countries | 0 | - | 4.99 | 147,117 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,588 |
| Countries with the Most Species | 0 | - | 4.99 | 103,214 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,721 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,574 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,709 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,120 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,307 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,522 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,208 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,633 |
| Countries in the Alps | 0 | - | 4.87 | 118,171 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,956 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,996 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,629 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,576 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,475 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,933 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,649 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,469 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,168 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,820 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,641 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,507 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,200 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,446 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,496 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,848 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,290 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,244 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,436 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,034 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,815 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,039 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,205 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,843 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,580 |
| Largest Countries By Category | 0 | - | 4.97 | 158,177 |
| Countries by Countries | 0 | - | 4.96 | 63,188 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,891 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,322 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,582 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,506 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,566 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,656 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,078 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,273 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,655 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,635 |
| National Animals | 0 | - | 4.24 | 89,749 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,176 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,208 |
| Random Countries by Borders | 0 | - | 4.99 | 82,595 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,352 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,790 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,382 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,441 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,050 |
| Island Countries | 0 | - | 4.99 | 710,960 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,102 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,563 |
| Northernmost Countries | 0 | - | 4.99 | 361,845 |
| Countries of South America | 0 | - | 5.00 | 927,092 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,504 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,876,593 |
| "Land" Countries | 0 | - | 4.98 | 337,268 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 384,518 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 138,523 |
| Companies by Country | 0 | - | 4.61 | 119,785 |
| African Great Lakes | 0 | - | 4.82 | 66,442 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,791 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,875 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,818 |
| Countries with Megacities | 0 | - | 4.99 | 264,412 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,688 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,442 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,947 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,506 |
| Countries by Official Language | 0 | - | 4.95 | 195,208 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,300 |
| Countries in their Native Language | 0 | - | 4.99 | 198,999 |
| Independence from Whom | 0 | - | 4.99 | 212,039 |
| Subdivisions by Country | 0 | - | 4.86 | 50,423 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,687 |
| Megadiverse Countries | 0 | - | 4.96 | 134,990 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,040 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,334 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,223 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,094 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,094 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,582 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,430 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,017 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,634 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,135 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,638 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,863 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,191 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,949 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,340 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,478 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,124 |
| World Map Quiz | 0 | - | 4.81 | 65,048 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,164 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,332 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,040 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,251 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,969 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,131 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,864 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,985 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,276 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,428 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,556 |
| Widest Countries East to West | 0 | - | 4.92 | 129,624 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,445 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,350 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,112 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,751 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,570 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,846 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,365 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,795 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 336,987 |
| Countries with Double Letters | 0 | - | 4.96 | 96,176 |
| Countries that End in N | 0 | - | 4.95 | 171,056 |
| Countries with Five Letters | 0 | - | 4.96 | 282,328 |
| Countries with Six Letters | 0 | - | 4.94 | 213,486 |
| Countries with W | 0 | - | 4.97 | 160,282 |
| Countries with Z | 0 | - | 4.98 | 291,377 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,646 |
| Countries That End in U | 0 | - | 4.95 | 120,820 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,409 |
| Countries that End in O | 0 | - | 4.92 | 159,492 |
| Countries that End in R | 0 | - | 4.87 | 118,949 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,709 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,024 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,653 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,448 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,362 |
| Countries That End in Y | 0 | - | 4.91 | 185,857 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,869 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,820 |
| Countries that End in I | 0 | - | 4.94 | 135,070 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,039 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,807 |
| Countries That End in NIA | 0 | - | 4.92 | 109,760 |
