| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,632,283 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,105,258 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,519 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,333 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,904 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,782 |
| Countries with Four Letters | 0 | - | 4.99 | 423,298 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,971 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,905 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,584,715 |
| Companies by Country | 0 | - | 4.61 | 119,813 |
| Landlocked Countries | 0 | - | 4.99 | 421,999 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 321,709 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 722,669 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,054 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,324 |
| Country Chain | 0 | - | 4.96 | 217,387 |
| Countries with the Most Christians | 0 | - | 4.92 | 143,580 |
| Countries by Emojis | 0 | - | 4.99 | 240,384 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,099 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,495 |
| Islands by Country #1 | 0 | - | 4.88 | 175,471 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,635 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,028 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,805 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,778,905 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 217,373 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,634 |
| Name a Valid Country #1 | 0 | - | 4.99 | 291,198 |
| Name a Valid Country #2 | 0 | - | 4.98 | 251,447 |
| Name a Valid Country #4 | 0 | - | 4.97 | 256,617 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,629 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,958 |
| Name a Valid Country #7 | 0 | - | 4.91 | 129,697 |
| Name a Valid Country #8 | 0 | - | 4.86 | 99,057 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,955 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,463 |
| Himalayan Countries | 0 | - | 4.94 | 138,742 |
| Andean Countries | 0 | - | 4.93 | 84,613 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,813 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,834 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,436 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,813 |
| Danube Countries | 0 | - | 4.97 | 72,012 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,016 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,423 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,315 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,794 |
| European Landlocked Countries | 0 | - | 4.99 | 147,147 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,647 |
| Countries with the Most Species | 0 | - | 4.99 | 103,244 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,771 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,595 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,723 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,162 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,339 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,544 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,232 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,663 |
| Countries in the Alps | 0 | - | 4.87 | 118,211 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,147 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,045 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,650 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,599 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,513 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,946 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,676 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,495 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,181 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,852 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,656 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,529 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,231 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,471 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,524 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,918 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,310 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,263 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 63,821 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,761 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,079 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,955 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,119 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,234 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,855 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,596 |
| Largest Countries By Category | 0 | - | 4.97 | 158,217 |
| Orthodox Countries | 0 | - | 4.92 | 132,231 |
| Countries by Countries | 0 | - | 4.96 | 63,224 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,928 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,341 |
| Battle to Country | 0 | - | 4.91 | 53,509 |
| Monarchies of Europe | 0 | - | 4.90 | 98,339 |
| Monarchies of Asia | 0 | - | 4.97 | 71,216 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,657 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,577 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,613 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,692 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,121 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,289 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 140,135 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,567 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 80,098 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,676 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,012 |
| Books by Country Quiz | 0 | - | 4.30 | 32,261 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,189 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,998 |
| Random Countries by Borders | 0 | - | 4.99 | 82,626 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,412 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,588 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,502 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,276 |
| Island Countries | 0 | - | 4.99 | 711,058 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,714 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,899 |
| Northernmost Countries | 0 | - | 4.99 | 361,969 |
| Countries of South America | 0 | - | 5.00 | 927,395 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,926 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,371 |
| "Land" Countries | 0 | - | 4.98 | 337,345 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 384,764 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,873 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.88 | 133,384 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,784 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,800 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,432 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,368 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 138,614 |
| Landforms by Country | 0 | - | 4.52 | 51,980 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,312 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,240 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,223 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,214 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,982 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,904 |
| Countries with Megacities | 0 | - | 4.99 | 264,577 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,745 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,470 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,001 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,545 |
| Countries by Official Language | 0 | - | 4.95 | 195,253 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,379 |
| Countries in their Native Language | 0 | - | 4.99 | 199,046 |
| Independence from Whom | 0 | - | 4.99 | 212,101 |
| Subdivisions by Country | 0 | - | 4.86 | 50,431 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,734 |
| Megadiverse Countries | 0 | - | 4.96 | 135,014 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,093 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,350 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,237 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,101 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,141 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,598 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,470 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,032 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,660 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,146 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,671 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,883 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,205 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,964 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,350 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,498 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,186 |
| World Map Quiz | 0 | - | 4.81 | 65,090 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,301 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,350 |
| Countries by Founding Story | 0 | - | 4.95 | 77,372 |
| Countries by Road Signs | 0 | - | 4.98 | 54,010 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,099 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,280 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,997 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,195 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,894 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,013 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,300 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,440 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,575 |
| Widest Countries East to West | 0 | - | 4.92 | 129,647 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,458 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,381 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,122 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,769 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,601 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,873 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,373 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,797 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 337,038 |
| Political Movements by Country | 0 | - | 4.46 | 72,618 |
| Countries with Double Letters | 0 | - | 4.96 | 96,233 |
| Countries that End in N | 0 | - | 4.95 | 171,118 |
| Countries with Five Letters | 0 | - | 4.96 | 282,456 |
| Countries with Six Letters | 0 | - | 4.94 | 213,546 |
| Countries with W | 0 | - | 4.97 | 160,322 |
| Countries with Z | 0 | - | 4.98 | 291,442 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,693 |
| Countries That End in U | 0 | - | 4.95 | 120,851 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,453 |
| Countries that End in O | 0 | - | 4.92 | 159,506 |
