| Word Scramble - Countries | 0 | - | 4.86 | 2,092,340 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,946 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 116,805 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,608 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,594 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,598,369 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,076,692 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,555 |
| Countries with Four Letters | 0 | - | 4.99 | 419,699 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,345 |
| Landlocked Countries | 0 | - | 4.99 | 415,586 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,716 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,844 |
| Country Chain | 0 | - | 4.96 | 216,177 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,322,202 |
| Countries by Emojis | 0 | - | 4.99 | 237,399 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,327 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 318,012 |
| Islands by Country #1 | 0 | - | 4.87 | 174,698 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,084 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,432 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,438 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,732,622 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,578 |
| Name a Valid Country #3 | 0 | - | 4.99 | 260,827 |
| Name a Valid Country #1 | 0 | - | 4.99 | 285,560 |
| Name a Valid Country #2 | 0 | - | 4.98 | 247,807 |
| Name a Valid Country #4 | 0 | - | 4.97 | 253,042 |
| Name a Valid Country #5 | 0 | - | 4.99 | 198,741 |
| Name a Valid Country #6 | 0 | - | 4.94 | 127,474 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 714,473 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,402 |
| Himalayan Countries | 0 | - | 4.95 | 136,048 |
| Andean Countries | 0 | - | 4.94 | 83,213 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,526 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,690 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,218 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,864 |
| Danube Countries | 0 | - | 4.97 | 71,283 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,029 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,731 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,912 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,855 |
| European Landlocked Countries | 0 | - | 4.99 | 145,993 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,566 |
| Countries with the Most Species | 0 | - | 4.99 | 95,358 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,695 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,277 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,446 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,078 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,730 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,098 |
| Countries in the Alps | 0 | - | 4.86 | 117,153 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,779 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,637 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,171 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,608 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,409 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,160 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,829 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,910 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,712 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,228 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,281 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,153 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,635 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,900 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,911 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,516 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,810 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,361 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,062 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,394 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,265 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,744 |
| Largest Countries By Category | 0 | - | 4.97 | 157,070 |
| Countries by Countries | 0 | - | 4.96 | 62,464 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,704 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,036 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,386 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,975 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,022 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,889 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,906 |
| Island Countries | 0 | - | 4.99 | 708,418 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,003 |
| Northernmost Countries | 0 | - | 4.99 | 358,823 |
| Countries of South America | 0 | - | 5.00 | 918,191 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,686 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,855,128 |
| "Land" Countries | 0 | - | 4.98 | 334,154 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,744 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,614 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,597 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,460 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,021 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,367,750 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,042 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,822 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,264 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,430 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,888 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,861 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,730 |
| Random Countries by Borders | 0 | - | 4.99 | 81,848 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,739 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,967 |
| Countries with Megacities | 0 | - | 4.99 | 248,347 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,868 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,391 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,258 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,325 |
| Countries by Official Language | 0 | - | 4.95 | 193,236 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,794 |
| Countries in their Native Language | 0 | - | 4.99 | 197,066 |
| Independence from Whom | 0 | - | 4.99 | 210,208 |
| Subdivisions by Country | 0 | - | 4.86 | 50,155 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,102 |
| Megadiverse Countries | 0 | - | 4.96 | 134,475 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,230 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,029 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,554 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,917 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,907 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,141 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,380 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,469 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,311 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,789 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,984 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,530 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,636 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,597 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,811 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,133 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,206 |
| World Map Quiz | 0 | - | 4.81 | 63,845 |
| Empty World Map without 20 Random Countries | 0 | - | 4.93 | 135,803 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,819 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,617 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,827 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,550 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,269 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,409 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,141 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,338 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,527 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,092 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,554 |
| Widest Countries East to West | 0 | - | 4.92 | 129,048 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,293 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,520 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,661 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,880 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,864 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,254 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,822 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,649 |
| Countries with Double Letters | 0 | - | 4.96 | 93,736 |
| Countries that End in N | 0 | - | 4.94 | 157,171 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,095 |
| Countries with Six Letters | 0 | - | 4.93 | 210,757 |
| Countries with W | 0 | - | 4.97 | 158,448 |
| Countries with Z | 0 | - | 4.98 | 288,304 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,801 |
| Countries That End in U | 0 | - | 4.95 | 119,626 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,920 |
| Countries that End in O | 0 | - | 4.92 | 158,675 |
| Countries that End in R | 0 | - | 4.87 | 118,388 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,944 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,462 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,588 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,685 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,235 |
| Countries That End in Y | 0 | - | 4.90 | 185,302 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,652 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,942 |
| Countries that End in I | 0 | - | 4.94 | 134,562 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,528 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,328 |
| Countries That End in NIA | 0 | - | 4.92 | 109,146 |
| Countries That End in BIA | 0 | - | 4.92 | 147,876 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,291 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,662 |
| Countries That End in RIA | 0 | - | 4.93 | 126,214 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,203 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,805 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,713 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,062 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,625 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,048 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,307 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,825 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,721 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,914 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,379 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,028 |
| Countries that End in L | 0 | - | 4.94 | 156,176 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,293 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,025 |
