| All Country Flags of the World | 0 | - | 5.00 | 3,697,463 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,543,007 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,095,756 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,428 |
| Flags with Crescents | 0 | - | 4.98 | 170,856 |
| Country Flag Trivia | 0 | - | 4.81 | 57,715 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,544 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,121 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 88,217 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,712 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,739 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 53,300 |
| Real vs. Fake Flags | 0 | - | 4.98 | 125,337 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 145,873 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 116,959 |
| Flags with the Most Stars | 0 | - | 4.91 | 137,462 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,949 |
| Flags that are Red & White Only | 0 | - | 4.97 | 165,243 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 146,955 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 77,202 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 48,145 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 69,075 |
| Country Flags with the Most Red | 0 | - | 4.98 | 121,084 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 93,056 |
| Country Flags with the Most Green | 0 | - | 4.96 | 100,128 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,928 |
| Country Flags with the Most Yellow | 0 | - | 4.95 | 99,545 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,974 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,977 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,377 |
| Country Flags Slideshow | 0 | - | 4.91 | 47,752 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,893 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 81,245 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,452 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,532 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 32,471 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,708 |
| Flags of North and South America | 0 | - | 4.99 | 375,713 |
| Flags to Languages | 0 | - | 4.95 | 174,229 |
| Former Flags | 0 | - | 4.97 | 108,269 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 36,149 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,886 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,846 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,566 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.94 | 31,152 |
| 20 Random Country Flags | 0 | - | 4.99 | 616,798 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 113,120 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,449 |
| Flags of the Mediterranean | 0 | - | 4.94 | 149,078 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 145,164 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 281,561 |
| Flag Maths | 0 | - | 4.61 | 57,814 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 146,533 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 83,020 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 49,160 |
| Countries by Coat of Arms #1 | 0 | - | 4.92 | 72,956 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,591 |
| World Coats of Arms | 0 | - | 4.99 | 64,903 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 143,215 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,633 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.96 | 172,381 |
| Similar Flags #1 | 0 | - | 4.75 | 130,517 |
| Similar Flags #2 | 0 | - | 4.74 | 137,828 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.68 | 38,129 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,438 |
| Emoji Flags | 0 | - | 4.35 | 44,226 |
| Countries by Road Signs | 0 | - | 4.98 | 54,210 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,920 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,412 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,436 |
| Countries by Partial Flag Images #8 | 0 | - | 4.78 | 25,926 |
| Select the World Flags | 0 | - | 4.28 | 37,908 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 76,353 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 59,075 |
| Name a Valid Country Flag | 0 | - | 4.69 | 76,251 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,668 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 70,367 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 67,435 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.51 | 47,064 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,641 |
| Countries by Picture #1 | 0 | - | 4.52 | 119,110 |
| Countries by Picture #3 | 0 | - | 4.51 | 60,991 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 48,129 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,238 |
| Flags of Asia Quiz | 0 | - | 4.99 | 617,979 |
| Pixelated World Map | 0 | - | 5.00 | 143,876 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 61,852 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,480 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 77,525 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.60 | 43,824 |
| Satellite Images - Europe | 0 | - | 4.47 | 104,977 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,347 |
| Cities by Satellite #1 | 0 | - | 4.36 | 81,978 |
| Cities by Satellite #2 | 0 | - | 4.49 | 25,302 |
| Countries by Picture #4 | 0 | - | 4.15 | 46,740 |
| Countries by Picture #2 | 0 | - | 4.38 | 72,257 |
| Countries by Picture #5 | 0 | - | 4.25 | 44,619 |
| Countries by Picture #6 | 0 | - | 4.16 | 37,177 |
| Geography by Picture - B | 0 | - | 4.42 | 55,731 |
| Geography by Picture - H | 0 | - | 4.50 | 58,334 |
| Geography by Picture - N | 0 | - | 4.45 | 42,301 |
| Geography by Picture - R | 0 | - | 4.56 | 41,109 |
| Geography by Picture - T | 0 | - | 4.54 | 57,953 |
| Merged Company Logos #3 | 0 | - | 4.50 | 64,748 |
| Flags of Oceania | 0 | - | 5.00 | 261,717 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,143 |
| Flags of WW1 | 0 | - | 4.60 | 38,594 |
| Flag Vocabulary Mega-Challenge | 0 | - | 4.34 | 27,308 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,310 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,269 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,622 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,256 |
| Boundary Waters | 0 | - | 4.92 | 88,671 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,332 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,487 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,059 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,792 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,800 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,735,675 |
| Landlocked Countries | 0 | - | 4.99 | 423,853 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 583,492 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,690 |
| Satellite Images #1 | 0 | - | 4.47 | 129,589 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,484 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 89,067 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,088 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,097 |
| Cities by Picture #1 | 0 | - | 4.74 | 86,424 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.50 | 24,869 |
| World Capitals Quiz | 0 | - | 5.00 | 5,095,052 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,792,370 |
| Merged Countries #2 | 0 | - | 4.96 | 99,729 |
| Merged Countries #6 | 0 | - | 4.90 | 73,669 |
| Merged Countries #7 | 0 | - | 4.93 | 83,017 |
| Geography by Picture - A | 0 | - | 4.39 | 60,382 |
| Geography by Picture - D | 0 | - | 4.15 | 45,751 |
| Geography by Picture - F | 0 | - | 4.31 | 51,128 |
| Geography by Picture - G | 0 | - | 4.39 | 48,047 |
| Geography by Picture - J | 0 | - | 4.16 | 38,557 |
| Geography by Picture - K | 0 | - | 4.29 | 33,215 |
| Geography by Picture - C | 0 | - | 4.31 | 57,184 |
| Geography by Picture - L | 0 | - | 4.37 | 59,088 |
| Geography by Picture - M | 0 | - | 4.14 | 40,546 |
| Geography by Picture - P | 0 | - | 4.24 | 42,528 |
| Geography by Picture - S | 0 | - | 4.38 | 47,141 |
| Merged Company Logos #4 | 0 | - | 4.39 | 52,656 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,465 |
| Islands by Picture | 0 | - | 4.28 | 107,523 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,822 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,221 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,712 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,734 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,279 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 124,455 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,595,402 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,114 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,591 |
| Island Countries | 0 | - | 4.99 | 711,780 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,367 |
| Himalayan Countries | 0 | - | 4.94 | 139,540 |
| Andean Countries | 0 | - | 4.94 | 85,068 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,248 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,464 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,810 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,120 |
| Danube Countries | 0 | - | 4.97 | 72,213 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,310 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,627 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,715 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,221 |
| European Landlocked Countries | 0 | - | 4.99 | 147,382 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,985 |
| Countries with the Most Species | 0 | - | 4.99 | 103,425 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,116 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,682 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,793 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,703 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,440 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,853 |
| Countries in the Alps | 0 | - | 4.87 | 118,497 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,087 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,463 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,814 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,816 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,750 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,098 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,924 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,675 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,302 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,019 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,762 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,632 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,391 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,639 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,723 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,384 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,476 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,255 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,365 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,932 |
