| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,595,117 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 713,416 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,709 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,578 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,504 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,202 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,474 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,029,726 |
| Landlocked Countries | 0 | - | 4.99 | 415,004 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,091,188 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,342 |
| Countries with Four Letters | 0 | - | 4.99 | 419,329 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,728,027 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,155 |
| Himalayan Countries | 0 | - | 4.95 | 135,858 |
| Andean Countries | 0 | - | 4.94 | 83,103 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,428 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,540 |
| Coffee Producing Countries | 0 | - | 4.82 | 66,133 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,788 |
| Danube Countries | 0 | - | 4.97 | 71,233 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,956 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,673 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,789 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,704 |
| European Landlocked Countries | 0 | - | 4.99 | 145,934 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,454 |
| Countries with the Most Species | 0 | - | 4.99 | 95,319 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,595 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,252 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,426 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,602 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,042 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,704 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,695 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,053 |
| Countries in the Alps | 0 | - | 4.86 | 117,065 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,719 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,526 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,138 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,555 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,335 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,120 |
| Country Chain | 0 | - | 4.96 | 216,011 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,749 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,873 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,656 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,184 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,257 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,124 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,585 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,855 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,867 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,374 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,771 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,336 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,980 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,077 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,100 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,704 |
| Largest Countries By Category | 0 | - | 4.97 | 156,976 |
| Countries by Emojis | 0 | - | 4.99 | 237,146 |
| Countries by Countries | 0 | - | 4.96 | 62,410 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,264 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,675 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,605 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,009 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,371 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,907 |
| Islands by Country #1 | 0 | - | 4.87 | 174,627 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,031 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,374 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,408 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,367 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,751 |
| Name a Valid Country #3 | 0 | - | 4.99 | 260,268 |
| Name a Valid Country #1 | 0 | - | 4.99 | 284,620 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,979 |
| Name a Valid Country #4 | 0 | - | 4.97 | 252,350 |
| Name a Valid Country #5 | 0 | - | 4.99 | 190,275 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,805 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,554 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,626 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,579 |
| Island Countries | 0 | - | 4.99 | 708,171 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,306 |
| Northernmost Countries | 0 | - | 4.99 | 358,520 |
| Countries of South America | 0 | - | 5.00 | 917,288 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,432 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,853,121 |
| "Land" Countries | 0 | - | 4.98 | 334,015 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,663 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,563 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,471 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,432 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,968 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,366,044 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,955 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,779 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,034 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,227 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,719 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,725 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 137,644 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,692 |
| Random Countries by Borders | 0 | - | 4.99 | 81,798 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,565 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,807 |
| Countries with Megacities | 0 | - | 4.99 | 247,997 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,685 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,298 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,064 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,248 |
| Countries by Official Language | 0 | - | 4.95 | 193,077 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,567 |
| Countries in their Native Language | 0 | - | 4.99 | 196,924 |
| Independence from Whom | 0 | - | 4.99 | 210,063 |
| Subdivisions by Country | 0 | - | 4.86 | 50,127 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,998 |
| Megadiverse Countries | 0 | - | 4.97 | 134,101 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,086 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,995 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,513 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,897 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,834 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,104 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,283 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,364 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,281 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,776 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,839 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,490 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,598 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,572 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,770 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,109 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,021 |
| World Map Quiz | 0 | - | 4.81 | 63,733 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,447 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,528 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,719 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,469 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,201 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,214 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,077 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,280 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,467 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,053 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,504 |
| Widest Countries East to West | 0 | - | 4.92 | 128,997 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,278 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,433 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,637 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,837 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,784 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,196 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 76,254 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,632 |
| Countries with Double Letters | 0 | - | 4.96 | 93,637 |
| Countries that End in N | 0 | - | 4.94 | 157,104 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,974 |
| Countries with Six Letters | 0 | - | 4.93 | 210,636 |
| Countries with W | 0 | - | 4.97 | 158,397 |
| Countries with Z | 0 | - | 4.98 | 288,184 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,726 |
| Countries That End in U | 0 | - | 4.95 | 119,596 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,839 |
| Countries that End in O | 0 | - | 4.92 | 158,636 |
| Countries that End in R | 0 | - | 4.87 | 118,359 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,922 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,369 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,514 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,624 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,171 |
| Countries That End in Y | 0 | - | 4.90 | 185,276 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,580 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,869 |
| Countries that End in I | 0 | - | 4.94 | 134,523 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,424 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,284 |
| Countries That End in NIA | 0 | - | 4.92 | 109,105 |
| Countries That End in BIA | 0 | - | 4.92 | 147,836 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,226 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,617 |
| Countries That End in RIA | 0 | - | 4.93 | 126,182 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,151 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,638 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,647 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,006 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,541 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,015 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,265 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,769 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,662 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,881 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,310 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,967 |
| Countries that End in L | 0 | - | 4.94 | 156,141 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,975 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,018 |
