| All Country Flags of the World | 0 | - | 5.00 | 3,632,420 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,531,602 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,089,963 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 731,595 |
| Flags with Crescents | 0 | - | 4.98 | 168,526 |
| Country Flag Trivia | 0 | - | 4.81 | 56,471 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,047 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,966 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 86,614 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,876 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,757 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,420 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 143,873 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 115,203 |
| Flags with the Most Stars | 0 | - | 4.91 | 135,738 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 61,829 |
| Flags that are Red & White Only | 0 | - | 4.97 | 163,628 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 145,373 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 75,368 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,107 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,091 |
| Country Flags with the Most Red | 0 | - | 4.98 | 119,926 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 92,140 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,228 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 98,993 |
| Country Flags with the Most Yellow | 0 | - | 4.95 | 98,693 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,172 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,501 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,897 |
| Country Flags Slideshow | 0 | - | 4.91 | 47,056 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,047 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,367 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 65,561 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 44,688 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,246 |
| Flags of North and South America | 0 | - | 4.99 | 370,455 |
| Flags to Languages | 0 | - | 4.95 | 173,062 |
| Former Flags | 0 | - | 4.97 | 107,215 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,788 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,221 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,121 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,291 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,650 |
| 20 Random Country Flags | 0 | - | 4.99 | 608,359 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 31,447 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,835 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,380 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 82,906 |
| Flags of the Mediterranean | 0 | - | 4.94 | 148,033 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,026 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 141,985 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 279,410 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 170,639 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,733 |
| Flag Maths | 0 | - | 4.64 | 57,714 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,978 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 82,213 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,624 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,559 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,384 |
| World Coats of Arms | 0 | - | 4.99 | 64,157 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,373 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,688 |
| Similar Flags #1 | 0 | - | 4.74 | 129,546 |
| Similar Flags #2 | 0 | - | 4.74 | 136,836 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.67 | 37,667 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,568 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 75,582 |
| Emoji Flags | 0 | - | 4.35 | 43,941 |
| Countries by Road Signs | 0 | - | 4.98 | 53,448 |
| Countries by Partial Flag Images #8 | 0 | - | 4.74 | 23,616 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,286 |
| Select the World Flags | 0 | - | 4.27 | 37,581 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,117 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 61,042 |
| Name a Valid Country Flag | 0 | - | 4.68 | 75,240 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 76,770 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,235,324 |
| Flags of Asia Quiz | 0 | - | 4.99 | 609,383 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,202 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 69,871 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 67,000 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.53 | 46,799 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,358 |
| Countries by Picture #1 | 0 | - | 4.53 | 98,666 |
| Countries by Picture #3 | 0 | - | 4.51 | 59,141 |
| Guess the Country by a Picture Hint | 0 | - | 4.42 | 47,577 |
| Flags of Africa Quiz | 0 | - | 5.00 | 467,166 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,354 |
| Pixelated World Map | 0 | - | 5.00 | 142,918 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,555 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.61 | 43,425 |
| Flags of WW1 | 0 | - | 4.60 | 38,180 |
| Satellite Images - Europe | 0 | - | 4.47 | 104,089 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,077 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,899 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,161 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,376 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,815 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,085 |
| Largest City on Every Continent A-Z | 0 | - | 4.97 | 37,947 |
| Cities by Satellite #1 | 0 | - | 4.38 | 80,644 |
| Cities by Satellite #2 | 0 | - | 4.49 | 24,983 |
| Capital Cities by Cartoon Riddles | 0 | - | 4.98 | 86,981 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,909 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,167 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 79,976 |
| World Capitals in the Answer | 0 | - | 4.94 | 76,638 |
| Click a Valid World Capital A-Z | 0 | - | 4.83 | 89,791 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,933 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,694 |
| Orthodox Countries | 0 | - | 4.92 | 130,986 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,142 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,799 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 119,763 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,490 |
| Battle to Country | 0 | - | 4.91 | 52,953 |
| Monarchies of Europe | 0 | - | 4.90 | 97,722 |
| Monarchies of Asia | 0 | - | 4.97 | 70,850 |
| Countries Mentioned in the Bible | 0 | - | 4.96 | 66,548 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,651 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,148 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,669 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,543 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,700 |
| Countries by Picture #4 | 0 | - | 4.15 | 45,159 |
| Countries by Picture #2 | 0 | - | 4.37 | 69,743 |
| Countries by Picture #5 | 0 | - | 4.25 | 43,245 |
| Countries by Picture #6 | 0 | - | 4.15 | 35,994 |
| Flags of Oceania | 0 | - | 5.00 | 257,148 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,551 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,725 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,445 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,819 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,274 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,369 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,536 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,533 |
| Countries Mentioned in the Wikipedia Page of Germany | 0 | - | 4.81 | 64,047 |
| Click a Valid Country A-Z | 0 | - | 4.97 | 526,026 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 82,142 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,547 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,826 |
| Merged Countries #2 | 0 | - | 4.96 | 98,751 |
| Merged Countries #6 | 0 | - | 4.90 | 72,980 |
| Merged Countries #7 | 0 | - | 4.93 | 82,249 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,431 |
| Countries in a Penrose Tiling of the World Map | 0 | - | 4.95 | 56,343 |
| Geography by Picture - B | 0 | - | 4.42 | 55,507 |
| Geography by Picture - H | 0 | - | 4.50 | 58,126 |
| Geography by Picture - N | 0 | - | 4.45 | 42,118 |
| Geography by Picture - R | 0 | - | 4.56 | 40,947 |
| Geography by Picture - T | 0 | - | 4.54 | 57,754 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,785 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,479 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,440 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 123,408 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,184,678 |
| Countries in World War I | 0 | - | 4.88 | 227,479 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,337 |
| Hindu Countries | 0 | - | 4.86 | 49,854 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,287 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 85,397 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,672 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,407 |
| Satellite Images #1 | 0 | - | 4.46 | 129,193 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,152 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,789 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,794 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,891 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,673 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,167 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,249 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,109 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,706 |
| Boundary Waters | 0 | - | 4.92 | 88,250 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,982 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,677 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,854 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 60,149 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 70,062 |
| World Capitals Quiz | 0 | - | 5.00 | 5,052,129 |
| Landlocked Countries | 0 | - | 4.99 | 416,934 |
| Countries with the Most Cathedrals | 0 | - | 4.51 | 44,061 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 562,635 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,742,592 |
| Places by Country - Tile Select | 0 | - | 4.32 | 14,021 |
| World Map with Random Merged Countries | 0 | - | 4.99 | 1,712,315 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,819 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 107,968 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,380 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,148 |
| Geography by Picture - A | 0 | - | 4.39 | 60,140 |
| Geography by Picture - D | 0 | - | 4.15 | 45,567 |
| Geography by Picture - F | 0 | - | 4.31 | 50,901 |
| Geography by Picture - G | 0 | - | 4.38 | 47,871 |
| Geography by Picture - J | 0 | - | 4.16 | 38,389 |
| Geography by Picture - K | 0 | - | 4.29 | 33,063 |
| Geography by Picture - C | 0 | - | 4.31 | 56,995 |
| Geography by Picture - L | 0 | - | 4.37 | 58,852 |
