| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 75,919 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 66,125 |
| South China Sea Countries | 0 | - | 4.81 | 53,797 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 128,171 |
| Top 10 American Countries by Coastline | 0 | - | 4.95 | 83,329 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.91 | 89,359 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 56,336 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.86 | 48,751 |
| African Great Lakes | 0 | - | 4.84 | 53,126 |
| Word Scramble - Countries | 0 | - | 4.87 | 1,919,989 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 384,198 |
| Countries with Four Letters | 0 | - | 4.99 | 375,474 |
| Countries with Wild Tigers | 0 | - | 4.95 | 110,873 |
| Countries with Wild Penguins | 0 | - | 4.93 | 90,169 |
| Solve the Secret Country #1 | 0 | - | 4.95 | 129,934 |
| Solve the Secret Country #2 | 0 | - | 4.91 | 88,100 |
| Anagram Chain - Countries | 0 | - | 4.98 | 96,650 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.89 | 78,593 |
| Landforms by Country Quiz | 0 | - | 4.54 | 51,259 |
| Countries but all Vowels are Changed to O | 0 | - | 4.84 | 35,002 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 44,643 |
| Capitals by River | 0 | - | 4.64 | 47,098 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,894,083 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 56,682 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 35,000 |
| Top Five Countries By Category #2 | 0 | - | 4.92 | 157,064 |
| Top Five Countries By Category #3 | 0 | - | 4.87 | 142,427 |
| Country Chain | 0 | - | 4.95 | 177,981 |
| Countries by Emojis | 0 | - | 4.99 | 205,426 |
| Countries With One Word And Two O's | 0 | - | 4.90 | 34,446 |
| Countries in Squares of the World Map | 0 | - | 5.00 | 165,264 |
| Islands by Country #1 | 0 | - | 4.87 | 163,560 |
| Regions of Countries #1 | 0 | - | 4.96 | 149,645 |
| Regions of Countries #2 | 0 | - | 4.95 | 114,343 |
| Regions of Countries #3 | 0 | - | 4.84 | 83,610 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 180,709 |
| Countries with the Most Sheep | 0 | - | 4.89 | 82,421 |
| Name a Valid Country #3 | 0 | - | 4.98 | 208,940 |
| Name a Valid Country #1 | 0 | - | 4.99 | 226,921 |
| Name a Valid Country #2 | 0 | - | 4.98 | 193,680 |
| Name a Valid Country #4 | 0 | - | 4.96 | 200,812 |
| Name a Valid Country #5 | 0 | - | 4.98 | 151,092 |
| Name a Valid Country #6 | 0 | - | 4.92 | 87,855 |
| Rivers of the United States | 0 | - | 4.91 | 56,917 |
| Capital Cities by Body of Water | 0 | - | 4.87 | 53,261 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 323,384 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 162,263 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.92 | 67,919 |
| Five Biggest Immigrant Groups by Country #3 | 0 | - | 4.83 | 46,873 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 100,792 |
| Countries with the Most McDonald's Locations | 0 | - | 4.81 | 79,911 |
| Biggest Countries with No McDonald's | 0 | - | 4.85 | 79,087 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.87 | 87,044 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,067,673 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 283,637 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 207,241 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 198,230 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 168,849 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.96 | 105,930 |
| Countries that Catch the Most Fish | 0 | - | 4.89 | 101,239 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 95,265 |
| Countries with the Most Wolves | 0 | - | 4.88 | 78,641 |
| Random Countries by Borders | 0 | - | 4.99 | 66,383 |
| Random Name a Valid Country | 0 | - | 4.99 | 168,709 |
| Empty World Map without 20 Random Countries | 0 | - | 4.93 | 100,905 |
| World Map with 10 Random Extra Borders | 0 | - | 4.97 | 325,901 |
| Countries With The Most Bird Species | 0 | - | 4.86 | 19,464 |
| Countries With Two or More Bear Species | 0 | - | 4.89 | 18,709 |
| Name a World Capital A-Z | 0 | - | 4.99 | 140,929 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 340,925 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 355,203 |
| Members of the Arab League | 0 | - | 4.85 | 61,762 |
| Island Countries Quiz | 0 | - | 4.99 | 660,175 |
| Sahara Desert Countries | 0 | - | 4.97 | 126,811 |
| Himalayan Countries | 0 | - | 4.94 | 104,670 |
| Andean Countries | 0 | - | 4.91 | 58,034 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 58,970 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,285 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,626 |
| Coffee Producing Countries | 0 | - | 4.81 | 54,011 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,257 |
| Danube Countries | 0 | - | 4.97 | 56,612 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,649 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,815 |
| Countries with the Best Passports | 0 | - | 4.88 | 71,131 |
| Countries with the Worst Passports | 0 | - | 4.87 | 49,309 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,461 |
| European Landlocked Countries | 0 | - | 4.99 | 115,475 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,287 |
| Countries with the Most Species | 0 | - | 4.99 | 89,512 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,308 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,660 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,990 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,220 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,389 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,667 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,096 |
| Countries in the Alps | 0 | - | 4.84 | 102,570 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,246 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 86,969 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,535 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,191 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,894 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,499 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,577 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,113 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,290 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,608 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,381 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,557 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,643 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,431 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,910 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,418 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 97,893 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,297 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,341 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 195,900 |
| World Countries - Blind Typing | 0 | - | 5.00 | 72,741 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,250 |
| Largest Countries By Category | 0 | - | 4.96 | 144,796 |
| Countries by Countries | 0 | - | 4.96 | 54,594 |
| Top 10 African Countries by Coastline | 0 | - | 4.26 | 46,362 |
| Country Flags with the Most White | 0 | - | 4.90 | 124,319 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,662 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 44,675 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,126 |
| Biggest Countries by Area | 0 | - | 5.00 | 932,432 |
| Northernmost Countries | 0 | - | 4.99 | 326,970 |
| Countries of South America | 0 | - | 5.00 | 792,506 |
| Countries of Oceania | 0 | - | 5.00 | 892,752 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,148,744 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,570,961 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.91 | 257,067 |
| Countries Closest to the Aegean Sea | 0 | - | 4.63 | 55,993 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,310,833 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,515 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 125,743 |
| Countries with Megacities | 0 | - | 4.99 | 197,005 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,350 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 97,835 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 95,223 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 63,791 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 247,695 |
| Countries by Official Language | 0 | - | 4.96 | 171,370 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 249,068 |
| Countries in their Native Language | 0 | - | 4.98 | 178,211 |
| Independence from Whom | 0 | - | 4.99 | 185,436 |
| Subdivisions by Country | 0 | - | 4.82 | 46,419 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,361 |
| Megadiverse Countries | 0 | - | 4.96 | 125,270 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 91,295 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,634 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,363 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 131,518 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,104 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,813 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,071 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,008 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,327 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,753 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,566 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,966 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,938 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,510 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,237 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,062,260 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 82,066 |
| World Map Quiz | 0 | - | 4.90 | 49,310 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 113,271 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 81,440 |
| Southernmost Countries of the World | 0 | - | 4.99 | 206,608 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,847 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,942 |
| Countries With the Most Languages | 0 | - | 4.90 | 173,481 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,263 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,535 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,237 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,907 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,397 |
| Widest Countries East to West | 0 | - | 4.93 | 119,316 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,808 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,941 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,628 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 85,459 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,786 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,113 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 66,440 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,037 |
| Countries with Double Letters | 0 | - | 4.96 | 68,278 |
| Countries that End in N | 0 | - | 4.94 | 132,625 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 229,646 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 186,961 |
| Countries with W | 0 | - | 4.96 | 122,661 |
| Countries with Z | 0 | - | 4.98 | 244,340 |
| Countries with Letters Missing | 0 | - | 4.97 | 163,115 |
| Countries That End in U | 0 | - | 4.95 | 107,531 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 89,417 |
| Countries that End in O | 0 | - | 4.92 | 146,900 |
| Countries that End in R | 0 | - | 4.85 | 96,457 |
