| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,594,941 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 713,377 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,698 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,566 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,501 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,191 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,470 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,027,125 |
| Landlocked Countries | 0 | - | 4.99 | 414,971 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,091,126 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,329 |
| Countries with Four Letters | 0 | - | 4.99 | 419,320 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,727,707 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,142 |
| Himalayan Countries | 0 | - | 4.95 | 135,841 |
| Andean Countries | 0 | - | 4.94 | 83,099 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,423 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,532 |
| Coffee Producing Countries | 0 | - | 4.82 | 66,130 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,783 |
| Danube Countries | 0 | - | 4.97 | 71,225 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,950 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,671 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,776 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,695 |
| European Landlocked Countries | 0 | - | 4.99 | 145,927 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,444 |
| Countries with the Most Species | 0 | - | 4.99 | 95,318 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,591 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,251 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,425 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,595 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,040 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,702 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,689 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,052 |
| Countries in the Alps | 0 | - | 4.86 | 117,053 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,718 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,516 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,133 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,550 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,334 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,115 |
| Country Chain | 0 | - | 4.96 | 216,001 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,745 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,867 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,654 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,175 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,255 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,120 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,581 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,853 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,864 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,365 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,767 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,334 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,978 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,050 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,096 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,703 |
| Largest Countries By Category | 0 | - | 4.97 | 156,969 |
| Countries by Emojis | 0 | - | 4.99 | 237,130 |
| Countries by Countries | 0 | - | 4.96 | 62,405 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,262 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,652 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,599 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,009 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,369 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,903 |
| Islands by Country #1 | 0 | - | 4.87 | 174,623 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,030 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,372 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,406 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,352 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,743 |
| Name a Valid Country #3 | 0 | - | 4.99 | 260,253 |
| Name a Valid Country #1 | 0 | - | 4.99 | 284,596 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,962 |
| Name a Valid Country #4 | 0 | - | 4.97 | 252,326 |
| Name a Valid Country #5 | 0 | - | 4.99 | 190,261 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,790 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,527 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,601 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,559 |
| Island Countries | 0 | - | 4.99 | 708,154 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,264 |
| Northernmost Countries | 0 | - | 4.99 | 358,500 |
| Countries of South America | 0 | - | 5.00 | 917,233 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,337 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,853,011 |
| "Land" Countries | 0 | - | 4.98 | 334,009 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,659 |
| 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 | 110,426 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,962 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,963 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,950 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,776 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,025 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,214 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,707 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,718 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 137,616 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,691 |
| Random Countries by Borders | 0 | - | 4.99 | 81,795 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,556 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,798 |
| Countries with Megacities | 0 | - | 4.99 | 247,969 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,678 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,294 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,060 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,244 |
| Countries by Official Language | 0 | - | 4.95 | 193,065 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,548 |
| Countries in their Native Language | 0 | - | 4.99 | 196,910 |
| Independence from Whom | 0 | - | 4.99 | 210,052 |
| Subdivisions by Country | 0 | - | 4.86 | 50,126 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,994 |
| Megadiverse Countries | 0 | - | 4.97 | 134,048 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,076 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,994 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,509 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,896 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,829 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,100 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,279 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,351 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,278 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,775 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,831 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,487 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,595 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,570 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,767 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,107 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,012 |
| World Map Quiz | 0 | - | 4.81 | 63,721 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,429 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,522 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,709 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,460 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,200 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,204 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,073 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,277 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,465 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,051 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,501 |
| Widest Countries East to West | 0 | - | 4.92 | 128,993 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,277 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,426 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,635 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,834 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,784 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,192 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 76,193 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,632 |
| Countries with Double Letters | 0 | - | 4.96 | 93,634 |
| Countries that End in N | 0 | - | 4.94 | 157,101 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,970 |
| Countries with Six Letters | 0 | - | 4.93 | 210,630 |
| Countries with W | 0 | - | 4.97 | 158,391 |
| Countries with Z | 0 | - | 4.98 | 288,176 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,720 |
| Countries That End in U | 0 | - | 4.95 | 119,596 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,833 |
| Countries that End in O | 0 | - | 4.92 | 158,635 |
| Countries that End in R | 0 | - | 4.87 | 118,358 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,920 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,363 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,506 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,621 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,168 |
| Countries That End in Y | 0 | - | 4.90 | 185,273 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,571 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,866 |
| Countries that End in I | 0 | - | 4.94 | 134,521 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,414 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,283 |
| Countries That End in NIA | 0 | - | 4.92 | 109,100 |
| Countries That End in BIA | 0 | - | 4.92 | 147,833 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,222 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,612 |
| Countries That End in RIA | 0 | - | 4.93 | 126,181 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,149 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,628 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,644 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,998 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,533 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,011 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,262 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,767 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,660 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,878 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,305 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,963 |
| Countries that End in L | 0 | - | 4.94 | 156,140 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,956 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,018 |
