| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,589,349 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 711,922 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,943,227 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,088,482 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,893 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,286 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,205 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,294 |
| Countries with Four Letters | 0 | - | 4.99 | 418,693 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 67,905 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,262 |
| Landlocked Countries | 0 | - | 4.99 | 413,864 |
| Countries of the World - One Minute Sprint | 0 | - | 4.35 | 956,480 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,455 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,381 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,492 |
| Country Chain | 0 | - | 4.96 | 215,798 |
| Countries by Emojis | 0 | - | 4.99 | 236,297 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,145 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,172 |
| Islands by Country #1 | 0 | - | 4.87 | 174,528 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,950 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,306 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,355 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,719,300 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 142,838 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.93 | 59,761 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,249 |
| Name a Valid Country #3 | 0 | - | 4.99 | 259,904 |
| Name a Valid Country #1 | 0 | - | 4.99 | 283,738 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,510 |
| Name a Valid Country #4 | 0 | - | 4.97 | 251,695 |
| Name a Valid Country #5 | 0 | - | 4.99 | 189,886 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,487 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,695 |
| Himalayan Countries | 0 | - | 4.95 | 135,456 |
| Andean Countries | 0 | - | 4.94 | 82,865 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,258 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,266 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,950 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,638 |
| Danube Countries | 0 | - | 4.97 | 71,102 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,794 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,559 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,531 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,456 |
| European Landlocked Countries | 0 | - | 4.99 | 145,784 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,247 |
| Countries with the Most Species | 0 | - | 4.99 | 95,256 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,391 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,205 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,377 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,971 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,593 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,968 |
| Countries in the Alps | 0 | - | 4.86 | 116,866 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,589 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,300 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,027 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,443 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,203 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,028 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,604 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,780 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,407 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,089 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,202 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,055 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,467 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,777 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,773 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,126 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,670 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,270 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,802 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,451 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,761 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,618 |
| Largest Countries By Category | 0 | - | 4.97 | 156,804 |
| Countries by Countries | 0 | - | 4.96 | 62,280 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,435 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,973 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,793 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,417 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,201 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,996 |
| Island Countries | 0 | - | 4.99 | 707,727 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,840 |
| Northernmost Countries | 0 | - | 4.99 | 357,887 |
| Countries of South America | 0 | - | 5.00 | 915,288 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,121 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,849,459 |
| "Land" Countries | 0 | - | 4.98 | 333,718 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,490 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,481 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,378 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,357 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,876 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,085 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,727 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,652 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,670 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 222,930 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,439 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,513 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,619 |
| Five Countries by a Single Word by Continent | 0 | - | 4.91 | 77,237 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,638 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 193,975 |
| Random Countries by Borders | 0 | - | 4.99 | 81,703 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,295 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 236,544 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,444 |
| Countries with Megacities | 0 | - | 4.99 | 247,266 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,288 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,094 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,715 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,019 |
| Countries by Official Language | 0 | - | 4.95 | 192,825 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,193 |
| Countries in their Native Language | 0 | - | 4.99 | 196,687 |
| Independence from Whom | 0 | - | 4.99 | 209,770 |
| Subdivisions by Country | 0 | - | 4.86 | 50,080 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,815 |
| Megadiverse Countries | 0 | - | 4.97 | 133,927 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,852 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,930 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,439 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,867 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,701 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,023 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,091 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,172 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,227 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,752 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,642 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,439 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,509 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,514 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,702 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,035 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,658 |
| World Map Quiz | 0 | - | 4.81 | 63,530 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 134,938 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,358 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,414 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,027 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,975 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,847 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,891 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,091 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,301 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,959 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,352 |
| Widest Countries East to West | 0 | - | 4.92 | 128,629 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,220 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,260 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,585 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,709 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,662 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,078 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,056 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,592 |
| Countries with Double Letters | 0 | - | 4.97 | 93,437 |
| Countries that End in N | 0 | - | 4.94 | 156,935 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,741 |
| Countries with Six Letters | 0 | - | 4.93 | 210,410 |
| Countries with W | 0 | - | 4.97 | 158,265 |
| Countries with Z | 0 | - | 4.98 | 287,937 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,590 |
| Countries That End in U | 0 | - | 4.95 | 119,536 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,627 |
| Countries that End in O | 0 | - | 4.92 | 158,574 |
| Countries that End in R | 0 | - | 4.87 | 118,289 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,869 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,125 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,370 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,522 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,057 |
| Countries That End in Y | 0 | - | 4.90 | 185,222 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,419 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,720 |
| Countries that End in I | 0 | - | 4.94 | 134,438 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,251 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,216 |
| Countries That End in NIA | 0 | - | 4.92 | 109,025 |
| Countries That End in BIA | 0 | - | 4.92 | 147,735 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,100 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,509 |
| Countries That End in RIA | 0 | - | 4.93 | 126,105 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,035 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,243 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,546 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,908 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,391 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,948 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,150 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,677 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,540 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,824 |
