| All Country Flags of the World | 0 | - | 5.00 | 3,652,455 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,535,243 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,091,922 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,779 |
| Flags with Crescents | 0 | - | 4.98 | 169,199 |
| Country Flag Trivia | 0 | - | 4.81 | 56,861 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,522 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,304 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,141 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,150 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,075 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,671 |
| Flags of North and South America | 0 | - | 4.99 | 372,277 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 144,398 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 115,659 |
| Flags with the Most Stars | 0 | - | 4.91 | 136,165 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,100 |
| Flags that are Red & White Only | 0 | - | 4.97 | 164,082 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 145,785 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 75,873 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,380 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,354 |
| Country Flags with the Most Red | 0 | - | 4.98 | 120,265 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 92,379 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,484 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,243 |
| Country Flags with the Most Yellow | 0 | - | 4.94 | 98,948 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,402 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,648 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,030 |
| Country Flags Slideshow | 0 | - | 4.91 | 47,263 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,312 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,615 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 65,838 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 44,933 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 31,732 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,380 |
| Flags to Languages | 0 | - | 4.95 | 173,466 |
| Former Flags | 0 | - | 4.97 | 107,549 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,885 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,437 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,344 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,934 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,612 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,906 |
| 20 Random Country Flags | 0 | - | 4.99 | 610,960 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,620 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,057 |
| Flags of the Mediterranean | 0 | - | 4.94 | 148,352 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,382 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 280,100 |
| Flag Maths | 0 | - | 4.64 | 57,748 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 145,380 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 82,393 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,752 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 142,356 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,683 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,456 |
| World Coats of Arms | 0 | - | 4.99 | 64,373 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 171,142 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,850 |
| Similar Flags #1 | 0 | - | 4.75 | 129,848 |
| Similar Flags #2 | 0 | - | 4.74 | 137,144 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,865 |
| Emoji Flags | 0 | - | 4.35 | 44,035 |
| Countries by Road Signs | 0 | - | 4.98 | 53,684 |
| Countries by Partial Flag Images #8 | 0 | - | 4.78 | 24,476 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,477 |
| Select the World Flags | 0 | - | 4.27 | 37,684 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,220 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 75,833 |
| Name a Valid Country Flag | 0 | - | 4.68 | 75,546 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,326 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 70,011 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 67,117 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.53 | 46,876 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,435 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 61,275 |
| Countries by Picture #1 | 0 | - | 4.53 | 99,335 |
| Countries by Picture #3 | 0 | - | 4.51 | 59,327 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 47,747 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 76,976 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,241,120 |
| Flags of Asia Quiz | 0 | - | 4.99 | 612,022 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,895 |
| Pixelated World Map | 0 | - | 5.00 | 143,211 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,963 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.61 | 43,550 |
| Flags of Africa Quiz | 0 | - | 5.00 | 469,829 |
| Satellite Images - Europe | 0 | - | 4.47 | 104,367 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,167 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,659 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,930 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 95,099 |
| World Capitals in the Answer | 0 | - | 4.94 | 76,935 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,180 |
| Orthodox Countries | 0 | - | 4.92 | 131,387 |
| Battle to Country | 0 | - | 4.91 | 53,201 |
| Monarchies of Europe | 0 | - | 4.90 | 98,002 |
| Monarchies of Asia | 0 | - | 4.97 | 71,009 |
| Countries Mentioned in the Bible | 0 | - | 4.96 | 66,871 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,794 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,548 |
| Flags of Oceania | 0 | - | 5.00 | 258,422 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,034 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,924 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,717 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,049 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,574 |
| Cities by Satellite #1 | 0 | - | 4.37 | 80,930 |
| Cities by Satellite #2 | 0 | - | 4.49 | 25,038 |
| Countries by Picture #4 | 0 | - | 4.15 | 45,308 |
| Countries by Picture #2 | 0 | - | 4.37 | 70,026 |
| Countries by Picture #5 | 0 | - | 4.25 | 43,389 |
| Countries by Picture #6 | 0 | - | 4.15 | 36,093 |
| Geography by Picture - B | 0 | - | 4.42 | 55,574 |
| Geography by Picture - H | 0 | - | 4.50 | 58,196 |
| Geography by Picture - N | 0 | - | 4.45 | 42,181 |
| Geography by Picture - R | 0 | - | 4.56 | 41,002 |
| Geography by Picture - T | 0 | - | 4.54 | 57,813 |
| Flags of WW1 | 0 | - | 4.60 | 38,313 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,790 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,821 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,806 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,172 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,634 |
| Largest City on Every Continent A-Z | 0 | - | 4.97 | 38,107 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,817 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 80,347 |
| Click a Valid World Capital A-Z | 0 | - | 4.83 | 90,224 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,077 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,134 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,448 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 133,104 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,016 |
| Click a Valid Country A-Z | 0 | - | 4.97 | 529,191 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,991 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,853 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,890 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,812 |
| Boundary Waters | 0 | - | 4.92 | 88,399 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,105 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,955 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,233 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,368 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 70,300 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,460 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,923 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,358,022 |
| Landlocked Countries | 0 | - | 4.99 | 419,272 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,869 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 568,879 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,417 |
| Countries Mentioned in the Wikipedia Page of Germany | 0 | - | 4.82 | 64,352 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,639 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,172 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,544 |
| Merged Countries #2 | 0 | - | 4.96 | 98,945 |
| Merged Countries #6 | 0 | - | 4.90 | 73,162 |
| Merged Countries #7 | 0 | - | 4.93 | 82,502 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,738 |
| Countries in a Penrose Tiling of the World Map | 0 | - | 4.95 | 56,606 |
| Satellite Images #1 | 0 | - | 4.47 | 129,315 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,256 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,874 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,878 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,950 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,892 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,517 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,674 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,730 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,968 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,828 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,708 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 123,774 |
| World Capitals Quiz | 0 | - | 5.00 | 5,065,727 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,130 |
| Himalayan Countries | 0 | - | 4.95 | 137,556 |
| Andean Countries | 0 | - | 4.95 | 84,006 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,275 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,748 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,890 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,393 |
| Countries in World War I | 0 | - | 4.88 | 227,906 |
| Danube Countries | 0 | - | 4.97 | 71,701 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,610 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,096 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,708 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,788 |
| European Landlocked Countries | 0 | - | 4.99 | 146,812 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,176 |
| Countries with the Most Species | 0 | - | 4.99 | 102,949 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,785 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,328 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,439 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,598 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,332 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,008 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,394 |
| Countries in the Alps | 0 | - | 4.87 | 117,745 |
