| All Country Flags of the World | 0 | - | 5.00 | 3,652,645 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,535,268 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,091,936 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 732,793 |
| Flags with Crescents | 0 | - | 4.98 | 169,202 |
| Country Flag Trivia | 0 | - | 4.81 | 56,864 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,523 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,306 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,145 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,152 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,078 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,673 |
| Flags of North and South America | 0 | - | 4.99 | 372,284 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 144,400 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 115,659 |
| Flags with the Most Stars | 0 | - | 4.91 | 136,168 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,101 |
| Flags that are Red & White Only | 0 | - | 4.97 | 164,084 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 145,788 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 75,879 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,383 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,355 |
| Country Flags with the Most Red | 0 | - | 4.98 | 120,266 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 92,381 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,486 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,246 |
| Country Flags with the Most Yellow | 0 | - | 4.94 | 98,950 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,402 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,649 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,031 |
| Country Flags Slideshow | 0 | - | 4.91 | 47,267 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,312 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,617 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 65,839 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 44,934 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 31,734 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,381 |
| Flags to Languages | 0 | - | 4.95 | 173,471 |
| Former Flags | 0 | - | 4.97 | 107,553 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,886 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,439 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,344 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,938 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,615 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,906 |
| 20 Random Country Flags | 0 | - | 4.99 | 611,005 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,622 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,058 |
| Flags of the Mediterranean | 0 | - | 4.94 | 148,357 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,383 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 280,103 |
| Flag Maths | 0 | - | 4.64 | 57,748 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 145,383 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 82,393 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,753 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 142,362 |
| 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 | 64,378 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 171,146 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,853 |
| Similar Flags #1 | 0 | - | 4.75 | 129,851 |
| Similar Flags #2 | 0 | - | 4.74 | 137,149 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,866 |
| Emoji Flags | 0 | - | 4.35 | 44,036 |
| Countries by Road Signs | 0 | - | 4.98 | 53,685 |
| Countries by Partial Flag Images #8 | 0 | - | 4.78 | 24,482 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,478 |
| Select the World Flags | 0 | - | 4.27 | 37,684 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,224 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 75,835 |
| Name a Valid Country Flag | 0 | - | 4.68 | 75,549 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,329 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 70,011 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 67,118 |
| 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 | 61,278 |
| Countries by Picture #1 | 0 | - | 4.53 | 99,337 |
| Countries by Picture #3 | 0 | - | 4.51 | 59,327 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 47,749 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 76,980 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,241,174 |
| Flags of Asia Quiz | 0 | - | 4.99 | 612,050 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,901 |
| Pixelated World Map | 0 | - | 5.00 | 143,215 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,966 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.61 | 43,553 |
| Flags of Africa Quiz | 0 | - | 5.00 | 469,849 |
| Satellite Images - Europe | 0 | - | 4.47 | 104,369 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,167 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,661 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,931 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 95,100 |
| World Capitals in the Answer | 0 | - | 4.94 | 76,937 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,184 |
| Orthodox Countries | 0 | - | 4.92 | 131,389 |
| Battle to Country | 0 | - | 4.91 | 53,202 |
| Monarchies of Europe | 0 | - | 4.90 | 98,004 |
| Monarchies of Asia | 0 | - | 4.97 | 71,010 |
| Countries Mentioned in the Bible | 0 | - | 4.96 | 66,872 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,795 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,550 |
| Flags of Oceania | 0 | - | 5.00 | 258,439 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,038 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,925 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,717 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,050 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,577 |
| Cities by Satellite #1 | 0 | - | 4.37 | 80,935 |
| 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 | 38,316 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,799 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,826 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,809 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,174 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,636 |
| Largest City on Every Continent A-Z | 0 | - | 4.97 | 38,108 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,818 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 80,353 |
| Click a Valid World Capital A-Z | 0 | - | 4.83 | 90,229 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,077 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,136 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,450 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 133,135 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,017 |
| Click a Valid Country A-Z | 0 | - | 4.97 | 529,222 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,993 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,853 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,894 |
| 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 | 62,239 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,373 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 70,300 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,461 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,927 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,359,377 |
| Landlocked Countries | 0 | - | 4.99 | 419,296 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,872 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 568,918 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,418 |
| Countries Mentioned in the Wikipedia Page of Germany | 0 | - | 4.82 | 64,354 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,643 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,173 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,550 |
| Merged Countries #2 | 0 | - | 4.96 | 98,946 |
| Merged Countries #6 | 0 | - | 4.90 | 73,162 |
| Merged Countries #7 | 0 | - | 4.93 | 82,503 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,740 |
| Countries in a Penrose Tiling of the World Map | 0 | - | 4.95 | 56,609 |
| Satellite Images #1 | 0 | - | 4.47 | 129,317 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,256 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,875 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,879 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,951 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,894 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,517 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,676 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,732 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,972 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,831 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,709 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 123,779 |
| World Capitals Quiz | 0 | - | 5.00 | 5,065,852 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,141 |
| Himalayan Countries | 0 | - | 4.95 | 137,563 |
| Andean Countries | 0 | - | 4.95 | 84,013 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,279 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,753 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,896 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,396 |
| Countries in World War I | 0 | - | 4.88 | 227,908 |
| Danube Countries | 0 | - | 4.97 | 71,702 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,611 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,098 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,710 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,789 |
| European Landlocked Countries | 0 | - | 4.99 | 146,812 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,179 |
| Countries with the Most Species | 0 | - | 4.99 | 102,952 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,787 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,329 |
| 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 | 59,334 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,008 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,396 |
| Countries in the Alps | 0 | - | 4.87 | 117,747 |
