| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 721,046 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,624,767 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,102,187 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,973 |
| Countries with Four Letters | 0 | - | 4.99 | 422,601 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,841 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,454 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,549 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,651 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,653 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,477,847 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,742 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 182,665 |
| Country Chain | 0 | - | 4.96 | 217,130 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,810 |
| Countries by Emojis | 0 | - | 4.99 | 239,806 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,966 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,779 |
| Islands by Country #1 | 0 | - | 4.88 | 175,310 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,554 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,906 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,744 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,110 |
| Name a Valid Country #1 | 0 | - | 4.99 | 290,069 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,817 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,674 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,084 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,488 |
| Landlocked Countries | 0 | - | 4.99 | 420,765 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,769,105 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 239,920 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,972 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,221 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,141 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,770 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,487 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,726 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,223 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,156 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,130 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,249 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,870 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,109 |
| Random Countries by Borders | 0 | - | 4.99 | 82,470 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,124 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,480 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,114 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,396 |
| Island Countries | 0 | - | 4.99 | 710,521 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,843 |
| Himalayan Countries | 0 | - | 4.95 | 138,179 |
| Andean Countries | 0 | - | 4.95 | 84,309 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,533 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,415 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,164 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,596 |
| Danube Countries | 0 | - | 4.97 | 71,856 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,829 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,262 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,022 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,477 |
| European Landlocked Countries | 0 | - | 4.99 | 146,997 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,405 |
| Countries with the Most Species | 0 | - | 4.99 | 103,114 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,565 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,519 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,669 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,457 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,130 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,522 |
| Countries in the Alps | 0 | - | 4.87 | 117,991 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,840 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,770 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,557 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,469 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,339 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,843 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,492 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,363 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,091 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,717 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,573 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,428 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,086 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,364 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,386 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,592 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,187 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,709 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,842 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,302 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,731 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,126 |
| Largest Countries By Category | 0 | - | 4.97 | 157,968 |
| Countries by Countries | 0 | - | 4.97 | 63,044 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,343 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,490 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,227 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,533 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,185 |
| Northernmost Countries | 0 | - | 4.99 | 361,352 |
| Countries of South America | 0 | - | 5.00 | 925,371 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,402 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,602 |
| "Land" Countries | 0 | - | 4.98 | 336,780 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 383,630 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,921 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,546 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 138,074 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,093 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,093 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,430 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,542 |
| Countries with Megacities | 0 | - | 4.99 | 263,600 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,378 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,289 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,657 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,329 |
| Countries by Official Language | 0 | - | 4.95 | 194,986 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,011 |
| Countries in their Native Language | 0 | - | 4.99 | 198,493 |
| Independence from Whom | 0 | - | 4.99 | 211,767 |
| Subdivisions by Country | 0 | - | 4.86 | 50,373 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,023 |
| Megadiverse Countries | 0 | - | 4.96 | 134,903 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,829 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,274 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,856 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,065 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,944 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,496 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,251 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,952 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,574 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,046 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,385 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,801 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,112 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,886 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,258 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,425 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,765 |
| World Map Quiz | 0 | - | 4.81 | 64,902 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,525 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,215 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,974 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,828 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,120 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,849 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,839 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,754 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,886 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,189 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,366 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,459 |
| Widest Countries East to West | 0 | - | 4.92 | 129,528 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,419 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,207 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,073 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,652 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,435 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,721 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,321 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,770 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 336,720 |
| Countries with Double Letters | 0 | - | 4.97 | 95,716 |
| Countries that End in N | 0 | - | 4.95 | 170,686 |
| Countries with Five Letters | 0 | - | 4.96 | 281,732 |
| Countries with Six Letters | 0 | - | 4.94 | 213,091 |
| Countries with W | 0 | - | 4.97 | 159,987 |
| Countries with Z | 0 | - | 4.98 | 290,942 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,324 |
| Countries That End in U | 0 | - | 4.95 | 120,644 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,145 |
| Countries that End in O | 0 | - | 4.92 | 159,370 |
| Countries that End in R | 0 | - | 4.87 | 118,855 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,627 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,741 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,414 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,283 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,892 |
| Countries That End in Y | 0 | - | 4.91 | 185,775 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,602 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,666 |
| Countries that End in I | 0 | - | 4.94 | 134,989 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,789 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,710 |
| Countries That End in NIA | 0 | - | 4.92 | 109,653 |
| Countries That End in BIA | 0 | - | 4.93 | 149,028 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,919 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,258 |
| Countries That End in RIA | 0 | - | 4.93 | 126,689 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,833 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,209 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,475 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,864 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,418 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,462 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,864 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,389 |
