| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,639,740 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 734,733 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,933 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,394 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,070 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,311 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,185 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,689,804 |
| Landlocked Countries | 0 | - | 4.99 | 423,315 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,108,147 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,168 |
| Countries with Four Letters | 0 | - | 4.99 | 424,091 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,788,203 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,142 |
| Himalayan Countries | 0 | - | 4.94 | 139,320 |
| Andean Countries | 0 | - | 4.93 | 84,935 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,154 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,319 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,729 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,042 |
| Danube Countries | 0 | - | 4.97 | 72,161 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,238 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,567 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,598 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,106 |
| European Landlocked Countries | 0 | - | 4.99 | 147,319 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,889 |
| Countries with the Most Species | 0 | - | 4.99 | 103,373 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,021 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,660 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,776 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,407 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,640 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,783 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,399 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,806 |
| Countries in the Alps | 0 | - | 4.87 | 118,419 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,890 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,346 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,778 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,756 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,666 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,064 |
| Country Chain | 0 | - | 4.96 | 217,857 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,854 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,637 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,266 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,988 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,738 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,611 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,347 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,598 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,664 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,247 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,432 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,951 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,287 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,670 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,510 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,335 |
| Largest Countries By Category | 0 | - | 4.97 | 158,463 |
| Countries by Emojis | 0 | - | 4.99 | 240,862 |
| Countries by Countries | 0 | - | 4.96 | 63,391 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,275 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 322,386 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,911 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,333 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,602 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,829 |
| Islands by Country #1 | 0 | - | 4.90 | 175,726 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,887 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,249 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,979 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 217,882 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,247 |
| Name a Valid Country #3 | 0 | - | 4.99 | 264,082 |
| Name a Valid Country #1 | 0 | - | 4.99 | 292,190 |
| Name a Valid Country #2 | 0 | - | 4.98 | 251,970 |
| Name a Valid Country #4 | 0 | - | 4.97 | 257,098 |
| Name a Valid Country #5 | 0 | - | 4.99 | 208,087 |
| Name a Valid Country #6 | 0 | - | 4.94 | 130,273 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,788 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,939 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,199 |
| Island Countries | 0 | - | 4.99 | 711,551 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,605 |
| Northernmost Countries | 0 | - | 4.99 | 362,658 |
| Countries of South America | 0 | - | 5.00 | 929,260 |
| Countries of Oceania | 0 | - | 5.00 | 1,059,279 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,881,603 |
| "Land" Countries | 0 | - | 4.98 | 337,720 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,375 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,475 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,412 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,937 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,709 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,387,177 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,099 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,434 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 237,150 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,208 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,953 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,380 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,350 |
| Random Countries by Borders | 0 | - | 4.99 | 82,795 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,720 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,317 |
| Countries with Megacities | 0 | - | 4.99 | 265,527 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,122 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,684 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,379 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,757 |
| Countries by Official Language | 0 | - | 4.95 | 195,525 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,769 |
| Countries in their Native Language | 0 | - | 4.99 | 199,314 |
| Independence from Whom | 0 | - | 4.99 | 212,419 |
| Subdivisions by Country | 0 | - | 4.87 | 50,503 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,969 |
| Megadiverse Countries | 0 | - | 4.96 | 135,117 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,337 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,431 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,313 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,146 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,313 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,671 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,657 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,435 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,725 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,193 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,973 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,977 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,289 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,031 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,452 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,571 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,645 |
| World Map Quiz | 0 | - | 4.81 | 65,292 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,968 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,488 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,374 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,459 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,157 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,697 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,056 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,167 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,424 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,515 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,682 |
| Widest Countries East to West | 0 | - | 4.92 | 129,785 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,486 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,893 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,402 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,864 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,745 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,004 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,425 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,828 |
| Countries with Double Letters | 0 | - | 4.96 | 96,556 |
| Countries that End in N | 0 | - | 4.95 | 171,455 |
| Countries with Five Letters | 0 | - | 4.96 | 283,014 |
| Countries with Six Letters | 0 | - | 4.94 | 213,884 |
| Countries with W | 0 | - | 4.96 | 160,561 |
| Countries with Z | 0 | - | 4.98 | 291,810 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,920 |
| Countries That End in U | 0 | - | 4.95 | 120,975 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,689 |
| Countries that End in O | 0 | - | 4.92 | 159,628 |
| Countries that End in R | 0 | - | 4.87 | 119,049 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,801 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,376 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,862 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,608 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,516 |
| Countries That End in Y | 0 | - | 4.91 | 185,960 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,108 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,015 |
| Countries that End in I | 0 | - | 4.94 | 135,188 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,288 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,901 |
| Countries That End in NIA | 0 | - | 4.92 | 109,870 |
| Countries That End in BIA | 0 | - | 4.93 | 149,340 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,264 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,556 |
| Countries That End in RIA | 0 | - | 4.93 | 126,906 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,152 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,956 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,888 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,321 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,872 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,655 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,148 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,475 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,658 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,519 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,447 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,145 |
| Countries that End in L | 0 | - | 4.94 | 156,952 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,426 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,298 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,116 |
