| All Country Flags of the World | 0 | - | 5.00 | 3,058,731 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,390,621 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,015,631 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 680,596 |
| Flags with Crescents | 0 | - | 4.98 | 146,467 |
| Country Flag Trivia | 0 | - | 4.81 | 45,350 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.99 | 78,129 |
| Country Flags with the Union Jack | 0 | - | 4.83 | 57,635 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.82 | 43,222 |
| Countries by Partial Flag Images #1 | 0 | - | 4.97 | 115,009 |
| Countries by Partial Flag Images #3 | 0 | - | 4.99 | 90,422 |
| Flags with the Most Stars | 0 | - | 4.90 | 108,396 |
| Flags that are Red & White Only | 0 | - | 4.97 | 132,439 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 127,919 |
| Flags of the Countries with Four Letters | 0 | - | 4.93 | 37,567 |
| Four Countries with Similar Flags #2 | 0 | - | 4.89 | 36,586 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 44,480 |
| Country Flags with the Most Red | 0 | - | 4.97 | 93,730 |
| Country Flags with the Most Blue | 0 | - | 4.90 | 81,119 |
| Country Flags with the Most Green | 0 | - | 4.95 | 81,810 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 83,253 |
| Country Flags with the Most Yellow | 0 | - | 4.94 | 89,334 |
| Country Flags with the Most Black | 0 | - | 4.94 | 87,750 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.94 | 56,135 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.93 | 44,572 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 82,835 |
| Countries by Partial Flag Images #4 | 0 | - | 4.90 | 63,714 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 49,434 |
| Countries With Blue and White Flags | 0 | - | 4.89 | 82,721 |
| Flags to Languages | 0 | - | 4.95 | 160,686 |
| Former Flags | 0 | - | 4.97 | 82,898 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 35,091 |
| Countries by Partial Flag Images #6 | 0 | - | 4.90 | 28,508 |
| Flags of North and South America Quiz | 0 | - | 4.99 | 316,309 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.92 | 27,163 |
| Random Flag to Country | 0 | - | 4.99 | 516,223 |
| Countries by Bordering Flags #1 | 0 | - | 4.92 | 95,127 |
| Countries by Bordering Flags #2 | 0 | - | 4.85 | 76,297 |
| Flags of the Mediterranean | 0 | - | 4.93 | 125,938 |
| Country Flags Multiple Choice | 0 | - | 4.98 | 117,018 |
| Flags of Countries in the World Cup 2018 | 0 | - | 4.83 | 87,684 |
| Random Flags Quiz | 0 | - | 4.41 | 259,462 |
| Countries by Satellite Image #1 | 0 | - | 4.88 | 131,587 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 76,663 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.87 | 44,976 |
| Category Elimination - Country Flags #1 | 0 | - | 4.97 | 127,814 |
| Countries by Coat of Arms #1 | 0 | - | 4.95 | 58,880 |
| World Coats of Arms | 0 | - | 4.99 | 56,725 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 42,645 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.96 | 153,614 |
| Country Flags with the Southern Cross | 0 | - | 4.72 | 52,154 |
| Similar Flags #1 | 0 | - | 4.75 | 112,673 |
| Similar Flags #2 | 0 | - | 4.78 | 114,881 |
| Emoji Flags | 0 | - | 4.34 | 41,122 |
| Countries by Road Signs | 0 | - | 4.98 | 46,307 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 54,830 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.65 | 54,900 |
| Select the World Flags | 0 | - | 4.31 | 33,907 |
| Islands by Shape #2 | 0 | - | 4.87 | 45,348 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.76 | 23,927 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 67,816 |
| Name a Valid Country Flag | 0 | - | 4.56 | 49,139 |
| Countries by Satellite Image #3 | 0 | - | 4.65 | 66,902 |
| Countries by Satellite Image #2 | 0 | - | 4.79 | 64,995 |
| Countries by Satellite Image #4 | 0 | - | 4.66 | 62,925 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.55 | 44,236 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 41,695 |
| Countries by Coat of Arms #2 | 0 | - | 4.78 | 32,553 |
| Countries by Picture #1 | 0 | - | 4.51 | 91,074 |
| Countries by Picture #3 | 0 | - | 4.52 | 55,260 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 43,026 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 68,188 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,067,169 |
| Flags of Asia Quiz | 0 | - | 4.99 | 535,185 |
| Pixelated World Map | 0 | - | 5.00 | 130,635 |
| Flags of Africa Quiz | 0 | - | 4.99 | 396,600 |
| Satellite Images - Europe | 0 | - | 4.44 | 82,995 |
| European Cities by Picture #2 | 0 | - | 4.44 | 35,163 |
| Flags of Oceania | 0 | - | 5.00 | 220,720 |
| Three Band Flags of Europe | 0 | - | 4.97 | 174,276 |
| Pixelated Africa Map | 0 | - | 4.98 | 89,812 |
| Pixelated Asia Map | 0 | - | 4.90 | 64,487 |
| Pixelated Europe Map | 0 | - | 4.90 | 111,039 |
| Cities by Satellite #1 | 0 | - | 4.37 | 72,026 |
| Cities by Satellite #2 | 0 | - | 4.47 | 23,076 |
| Countries by Picture #4 | 0 | - | 4.17 | 42,392 |
| Countries by Picture #2 | 0 | - | 4.37 | 65,148 |
| Countries by Picture #5 | 0 | - | 4.27 | 40,373 |
| Countries by Picture #6 | 0 | - | 4.14 | 34,006 |
| Geography by Picture - H | 0 | - | 4.51 | 55,636 |
| Geography by Picture - N | 0 | - | 4.46 | 39,949 |
| Geography by Picture - R | 0 | - | 4.54 | 38,938 |
| Geography by Picture - T | 0 | - | 4.56 | 55,259 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.51 | 23,674 |
| Boundary Waters | 0 | - | 4.93 | 82,038 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 76,441 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.92 | 47,222 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 52,584 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 61,541 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,783,154 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 334,612 |
| Save Humanity by Guessing Countries | 0 | - | 4.99 | 377,508 |
| Merged Countries #2 | 0 | - | 4.96 | 90,789 |
| Merged Countries #4 | 0 | - | 4.86 | 85,803 |
| Merged Countries #6 | 0 | - | 4.90 | 66,289 |
| Merged Countries #7 | 0 | - | 4.94 | 75,475 |
| Satellite Images Quiz #1 | 0 | - | 4.47 | 123,666 |
| Satellite Images Quiz #2 | 0 | - | 4.65 | 104,487 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 85,051 |
| Satellite Images Quiz #5 | 0 | - | 4.46 | 46,307 |
| Satellite Images Quiz #6 | 0 | - | 4.53 | 36,069 |
| Cities by Picture #1 | 0 | - | 4.70 | 78,379 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.83 | 30,801 |
| World Geography on a Map #1 | 0 | - | 4.93 | 68,296 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 85,671 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 139,874 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 111,595 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.94 | 111,648 |
| World Capitals Quiz | 0 | - | 5.00 | 4,578,414 |
| Members of the Arab League | 0 | - | 4.86 | 66,401 |
| Sahara Desert Countries | 0 | - | 4.97 | 130,573 |
| Himalayan Countries | 0 | - | 4.94 | 108,521 |
| Andean Countries | 0 | - | 4.91 | 60,269 |
| Countries with the Oldest Median Age | 0 | - | 4.82 | 61,435 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,889 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 104,515 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,872 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 54,293 |
| Danube Countries | 0 | - | 4.96 | 57,246 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,255 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,315 |
| Countries with the Best Passports | 0 | - | 4.86 | 72,753 |
| Countries with the Worst Passports | 0 | - | 4.88 | 50,441 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 111,081 |
| European Landlocked Countries | 0 | - | 4.99 | 137,242 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,850 |
| Countries with the Most Species | 0 | - | 4.99 | 89,869 |
| Countries 197 to 205 | 0 | - | 4.87 | 57,382 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 45,035 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,328 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 49,091 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,901 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 59,146 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,957 |
| Countries in the Alps | 0 | - | 4.84 | 103,910 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,473 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 89,606 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,311 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,409 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,930 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,378 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,579 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,793 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,715 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,443 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 70,206 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 49,046 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 37,040 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,606 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,700 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,272 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 100,652 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,984 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 54,076 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 202,783 |
| World Countries - Blind Typing | 0 | - | 5.00 | 75,498 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,856 |
| Largest Countries By Category | 0 | - | 4.97 | 146,487 |
| Countries by Countries | 0 | - | 4.95 | 55,645 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,174,424 |
| Country Flags with the Most White | 0 | - | 4.90 | 126,600 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,228 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 45,146 |
| All Countries by Population With a Map | 0 | - | 4.99 | 65,121 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 78,046 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,670 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,230,566 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.99 | 136,318 |
| Western Europe Map Quiz | 0 | - | 4.87 | 89,732 |
| Geography by Picture - A | 0 | - | 4.35 | 57,363 |
| Geography by Picture - B | 0 | - | 4.37 | 52,862 |
| Geography by Picture - D | 0 | - | 4.13 | 43,508 |
| Geography by Picture - F | 0 | - | 4.29 | 48,681 |
| Geography by Picture - G | 0 | - | 4.39 | 45,722 |
| Geography by Picture - J | 0 | - | 4.14 | 36,669 |
| Geography by Picture - C | 0 | - | 4.28 | 54,604 |
| Geography by Picture - L | 0 | - | 4.34 | 56,263 |
| Geography by Picture - M | 0 | - | 4.11 | 38,662 |
| Geography by Picture - P | 0 | - | 4.26 | 40,475 |
| Geography by Picture - S | 0 | - | 4.35 | 44,927 |
| Satellite Images - Island Chains | 0 | - | 4.42 | 58,809 |
| Islands by Satellite Image #1 | 0 | - | 4.71 | 63,442 |
| Landmarks Picture Quiz #1 | 0 | - | 4.21 | 363,583 |
| European Cities by Picture #1 | 0 | - | 4.25 | 24,927 |
| Tourist Attraction by Negative Review | 0 | - | 4.91 | 60,577 |
| Airline Logos | 0 | - | 4.43 | 129,968 |
| Who Controls It? #1 | 0 | - | 4.82 | 45,889 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 183,365 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 111,916 |
| Longest International Borders | 0 | - | 4.99 | 236,718 |
