| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 713,183 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,594,268 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,090,693 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,281 |
| Countries with Four Letters | 0 | - | 4.99 | 419,231 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,641 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,519 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,471 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,148 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,441 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,015,843 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,563 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,676 |
| Country Chain | 0 | - | 4.96 | 215,977 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,770 |
| Countries by Emojis | 0 | - | 4.99 | 237,080 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,238 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,592 |
| Islands by Country #1 | 0 | - | 4.87 | 174,612 |
| Regions of Countries #1 | 0 | - | 4.97 | 159,026 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,361 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,401 |
| Name a Valid Country #3 | 0 | - | 4.99 | 260,206 |
| Name a Valid Country #1 | 0 | - | 4.99 | 284,479 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,911 |
| Name a Valid Country #4 | 0 | - | 4.97 | 252,273 |
| Name a Valid Country #5 | 0 | - | 4.99 | 190,213 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,747 |
| Landlocked Countries | 0 | - | 4.99 | 414,829 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,726,563 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 237,084 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,627 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,548 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,457 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,422 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,948 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,918 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,761 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,982 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,174 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,664 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,682 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,677 |
| Random Countries by Borders | 0 | - | 4.99 | 81,783 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,509 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,390 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,555 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,463 |
| Island Countries | 0 | - | 4.99 | 708,087 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,078 |
| Himalayan Countries | 0 | - | 4.95 | 135,791 |
| Andean Countries | 0 | - | 4.94 | 83,074 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,407 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,499 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,107 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,769 |
| Danube Countries | 0 | - | 4.97 | 71,212 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,932 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,660 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,755 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,662 |
| European Landlocked Countries | 0 | - | 4.99 | 145,903 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,415 |
| Countries with the Most Species | 0 | - | 4.99 | 95,313 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,567 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,244 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,417 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,031 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,675 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,041 |
| Countries in the Alps | 0 | - | 4.86 | 117,030 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,702 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,487 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,125 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,532 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,318 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,105 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,729 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,859 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,639 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,166 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,244 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,112 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,569 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,847 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,847 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,338 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,756 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,329 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,967 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,949 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,057 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,693 |
| Largest Countries By Category | 0 | - | 4.97 | 156,940 |
| Countries by Countries | 0 | - | 4.96 | 62,396 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,560 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,578 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,003 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,884 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,091 |
| Northernmost Countries | 0 | - | 4.99 | 358,417 |
| Countries of South America | 0 | - | 5.00 | 916,916 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,038 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,852,508 |
| "Land" Countries | 0 | - | 4.98 | 333,964 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 379,479 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,602 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,189 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 135,387 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,570 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,133 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,151 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,754 |
| Countries with Megacities | 0 | - | 4.99 | 247,875 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,631 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,267 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,018 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,216 |
| Countries by Official Language | 0 | - | 4.95 | 193,036 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,491 |
| Countries in their Native Language | 0 | - | 4.99 | 196,884 |
| Independence from Whom | 0 | - | 4.99 | 210,009 |
| Subdivisions by Country | 0 | - | 4.86 | 50,118 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,967 |
| Megadiverse Countries | 0 | - | 4.97 | 134,003 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,044 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,980 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,486 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,890 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,810 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,083 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,256 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,314 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,271 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,773 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,806 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,482 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,581 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,565 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,760 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,091 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,944 |
| World Map Quiz | 0 | - | 4.81 | 63,705 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,370 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,485 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,930 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,667 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,433 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,165 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,154 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,053 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,251 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,448 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,038 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,487 |
| Widest Countries East to West | 0 | - | 4.92 | 128,980 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,270 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,406 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,623 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,817 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,760 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,175 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 75,556 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,630 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 335,325 |
| Countries with Double Letters | 0 | - | 4.97 | 93,611 |
| Countries that End in N | 0 | - | 4.94 | 157,081 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,934 |
| Countries with Six Letters | 0 | - | 4.93 | 210,606 |
| Countries with W | 0 | - | 4.97 | 158,372 |
| Countries with Z | 0 | - | 4.98 | 288,145 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,705 |
| Countries That End in U | 0 | - | 4.95 | 119,594 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,809 |
| Countries that End in O | 0 | - | 4.92 | 158,627 |
| Countries that End in R | 0 | - | 4.87 | 118,351 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,914 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,338 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,494 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,607 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,156 |
| Countries That End in Y | 0 | - | 4.90 | 185,265 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,559 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,843 |
| Countries that End in I | 0 | - | 4.94 | 134,517 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,398 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,274 |
| Countries That End in NIA | 0 | - | 4.92 | 109,087 |
| Countries That End in BIA | 0 | - | 4.92 | 147,820 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,205 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,602 |
| Countries That End in RIA | 0 | - | 4.93 | 126,171 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,136 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,597 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,634 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,994 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,505 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,996 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,237 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,757 |
