| All Country Flags of the World | 0 | - | 5.00 | 3,703,141 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,543,940 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,096,250 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,814 |
| Flags with Crescents | 0 | - | 4.98 | 171,036 |
| Country Flag Trivia | 0 | - | 4.81 | 57,817 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,687 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,239 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 88,351 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,793 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,827 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 53,366 |
| Real vs. Fake Flags | 0 | - | 4.98 | 125,478 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 146,059 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 117,099 |
| Flags with the Most Stars | 0 | - | 4.91 | 137,621 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 63,040 |
| Flags that are Red & White Only | 0 | - | 4.97 | 165,378 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 147,095 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 77,387 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 48,250 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 69,180 |
| Country Flags with the Most Red | 0 | - | 4.98 | 121,188 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 93,143 |
| Country Flags with the Most Green | 0 | - | 4.96 | 100,221 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 100,003 |
| Country Flags with the Most Yellow | 0 | - | 4.95 | 99,623 |
| Country Flags with the Most Black | 0 | - | 4.95 | 98,041 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 68,011 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,415 |
| Country Flags Slideshow | 0 | - | 4.91 | 47,824 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,960 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 81,309 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,522 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,608 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 32,563 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,741 |
| Flags of North and South America | 0 | - | 4.99 | 376,138 |
| Flags to Languages | 0 | - | 4.95 | 174,335 |
| Former Flags | 0 | - | 4.97 | 108,372 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 36,184 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,931 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,911 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,627 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.94 | 31,176 |
| 20 Random Country Flags | 0 | - | 4.99 | 617,577 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 113,159 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,484 |
| Flags of the Mediterranean | 0 | - | 4.94 | 149,178 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 145,267 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 281,759 |
| Flag Maths | 0 | - | 4.61 | 57,822 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 146,650 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 83,074 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 49,195 |
| Countries by Coat of Arms #1 | 0 | - | 4.92 | 72,995 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,606 |
| World Coats of Arms | 0 | - | 4.99 | 64,996 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 143,352 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,717 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.96 | 172,529 |
| Similar Flags #1 | 0 | - | 4.75 | 130,613 |
| Similar Flags #2 | 0 | - | 4.74 | 137,911 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.68 | 38,173 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,518 |
| Emoji Flags | 0 | - | 4.35 | 44,254 |
| Countries by Road Signs | 0 | - | 4.98 | 54,255 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,978 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,467 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,460 |
| Countries by Partial Flag Images #8 | 0 | - | 4.78 | 26,090 |
| Select the World Flags | 0 | - | 4.28 | 37,939 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 76,421 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 59,104 |
| Name a Valid Country Flag | 0 | - | 4.69 | 76,765 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,706 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 70,416 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 67,468 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.51 | 47,086 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,669 |
| Countries by Picture #1 | 0 | - | 4.52 | 119,242 |
| Countries by Picture #3 | 0 | - | 4.51 | 61,021 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 48,155 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,759 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,698 |
| Pixelated World Map | 0 | - | 5.00 | 143,948 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 61,927 |
| Flags of Africa Quiz | 0 | - | 5.00 | 476,174 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 77,578 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.60 | 43,859 |
| Satellite Images - Europe | 0 | - | 4.47 | 105,066 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,369 |
| Cities by Satellite #1 | 0 | - | 4.36 | 82,154 |
| Cities by Satellite #2 | 0 | - | 4.49 | 25,341 |
| Countries by Picture #4 | 0 | - | 4.15 | 46,770 |
| Countries by Picture #2 | 0 | - | 4.38 | 72,304 |
| Countries by Picture #5 | 0 | - | 4.25 | 44,646 |
| Countries by Picture #6 | 0 | - | 4.16 | 37,201 |
| Geography by Picture - B | 0 | - | 4.42 | 55,747 |
| Geography by Picture - H | 0 | - | 4.50 | 58,349 |
| Geography by Picture - N | 0 | - | 4.45 | 42,319 |
| Geography by Picture - R | 0 | - | 4.56 | 41,122 |
| Geography by Picture - T | 0 | - | 4.54 | 57,967 |
| Merged Company Logos #3 | 0 | - | 4.50 | 64,808 |
| Flags of Oceania | 0 | - | 5.00 | 262,062 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,308 |
| Flags of WW1 | 0 | - | 4.60 | 38,624 |
| Flag Vocabulary Mega-Challenge | 0 | - | 4.34 | 27,321 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,359 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,338 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,671 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,333 |
| Boundary Waters | 0 | - | 4.92 | 88,712 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,368 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,566 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,166 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,848 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,850 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,781,874 |
| Landlocked Countries | 0 | - | 4.99 | 424,535 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 585,214 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,729 |
| Satellite Images #1 | 0 | - | 4.47 | 129,854 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,583 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 89,140 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,158 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,153 |
| Cities by Picture #1 | 0 | - | 4.74 | 86,474 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.50 | 24,885 |
| World Capitals Quiz | 0 | - | 5.00 | 5,099,147 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,796,333 |
| Merged Countries #2 | 0 | - | 4.96 | 99,792 |
| Merged Countries #6 | 0 | - | 4.90 | 73,731 |
| Merged Countries #7 | 0 | - | 4.93 | 83,066 |
| Geography by Picture - A | 0 | - | 4.39 | 60,399 |
| Geography by Picture - D | 0 | - | 4.15 | 45,765 |
| Geography by Picture - F | 0 | - | 4.31 | 51,142 |
| Geography by Picture - G | 0 | - | 4.39 | 48,057 |
| Geography by Picture - J | 0 | - | 4.16 | 38,570 |
| Geography by Picture - K | 0 | - | 4.29 | 33,227 |
| Geography by Picture - C | 0 | - | 4.31 | 57,204 |
| Geography by Picture - L | 0 | - | 4.37 | 59,101 |
| Geography by Picture - M | 0 | - | 4.14 | 40,557 |
| Geography by Picture - P | 0 | - | 4.24 | 42,537 |
| Geography by Picture - S | 0 | - | 4.38 | 47,156 |
| Merged Company Logos #4 | 0 | - | 4.39 | 52,691 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,477 |
| Islands by Picture | 0 | - | 4.28 | 107,614 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,856 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,286 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,810 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,845 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,394 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 124,541 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,596,849 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,311 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,983 |
| Island Countries | 0 | - | 4.99 | 712,083 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,637 |
| Himalayan Countries | 0 | - | 4.94 | 139,778 |
| Andean Countries | 0 | - | 4.94 | 85,187 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,366 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,645 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,934 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,226 |
| Danube Countries | 0 | - | 4.97 | 72,274 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,419 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,705 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,856 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,358 |
| European Landlocked Countries | 0 | - | 4.99 | 147,457 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,089 |
| Countries with the Most Species | 0 | - | 4.99 | 103,487 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,233 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,710 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,822 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,748 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,477 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,907 |
| Countries in the Alps | 0 | - | 4.87 | 118,582 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,319 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,599 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,874 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,888 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,817 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,138 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,222 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,763 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,335 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,068 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,795 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,662 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,452 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,686 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,774 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,525 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,523 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,539 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,487 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,210 |
