| All Country Flags of the World | 0 | - | 5.00 | 3,697,183 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,542,969 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,095,738 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,415 |
| Flags with Crescents | 0 | - | 4.98 | 170,849 |
| Country Flag Trivia | 0 | - | 4.81 | 57,711 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,539 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,114 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 88,211 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,708 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,736 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 53,297 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 145,867 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 116,953 |
| Flags with the Most Stars | 0 | - | 4.91 | 137,457 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,942 |
| Flags that are Red & White Only | 0 | - | 4.97 | 165,241 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 146,945 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 77,200 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 48,145 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 69,074 |
| Country Flags with the Most Red | 0 | - | 4.98 | 121,080 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 93,051 |
| Country Flags with the Most Green | 0 | - | 4.96 | 100,121 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,922 |
| Country Flags with the Most Yellow | 0 | - | 4.95 | 99,540 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,972 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,977 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,374 |
| Country Flags Slideshow | 0 | - | 4.91 | 47,748 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,889 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 81,238 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,449 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,529 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 32,468 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,707 |
| Flags of North and South America | 0 | - | 4.99 | 375,691 |
| Flags to Languages | 0 | - | 4.95 | 174,226 |
| Former Flags | 0 | - | 4.97 | 108,268 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 36,149 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,885 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,845 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,563 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.94 | 31,151 |
| 20 Random Country Flags | 0 | - | 4.99 | 616,759 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 113,117 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,445 |
| Flags of the Mediterranean | 0 | - | 4.94 | 149,072 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 145,161 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 281,557 |
| Flag Maths | 0 | - | 4.61 | 57,813 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 146,532 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 83,017 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 49,160 |
| Countries by Coat of Arms #1 | 0 | - | 4.92 | 72,955 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,590 |
| World Coats of Arms | 0 | - | 4.99 | 64,902 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 143,212 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,630 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.96 | 172,378 |
| Similar Flags #1 | 0 | - | 4.75 | 130,516 |
| Similar Flags #2 | 0 | - | 4.74 | 137,826 |
| 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 | 61,919 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,435 |
| Countries by Partial Flag Images #8 | 0 | - | 4.78 | 25,916 |
| Select the World Flags | 0 | - | 4.27 | 37,908 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 76,351 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 59,072 |
| Name a Valid Country Flag | 0 | - | 4.69 | 76,228 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,667 |
| 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 | - | 4.53 | 47,064 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,639 |
| Countries by Picture #1 | 0 | - | 4.52 | 119,107 |
| Countries by Picture #3 | 0 | - | 4.51 | 60,991 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 48,127 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,166 |
| Flags of Asia Quiz | 0 | - | 4.99 | 617,949 |
| Pixelated World Map | 0 | - | 5.00 | 143,873 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 61,847 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,446 |
| 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 | 104,975 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,347 |
| Cities by Satellite #1 | 0 | - | 4.36 | 81,968 |
| Cities by Satellite #2 | 0 | - | 4.49 | 25,299 |
| Countries by Picture #4 | 0 | - | 4.15 | 46,739 |
| Countries by Picture #2 | 0 | - | 4.38 | 72,255 |
| 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 | 55,729 |
| Geography by Picture - H | 0 | - | 4.50 | 58,334 |
| Geography by Picture - N | 0 | - | 4.45 | 42,299 |
| Geography by Picture - R | 0 | - | 4.56 | 41,107 |
| Geography by Picture - T | 0 | - | 4.54 | 57,952 |
| Flags of Oceania | 0 | - | 5.00 | 261,679 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,142 |
| Flags of WW1 | 0 | - | 4.60 | 38,593 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,308 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,267 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,619 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,251 |
| Boundary Waters | 0 | - | 4.92 | 88,669 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,332 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,485 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,057 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,791 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,798 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,733,515 |
| Landlocked Countries | 0 | - | 4.99 | 423,833 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 583,386 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,688 |
| Satellite Images #1 | 0 | - | 4.47 | 129,586 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,483 |
| 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 | 86,421 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.50 | 24,869 |
| World Capitals Quiz | 0 | - | 5.00 | 5,094,860 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,792,191 |
| Merged Countries #2 | 0 | - | 4.96 | 99,708 |
| Merged Countries #6 | 0 | - | 4.90 | 73,665 |
| Merged Countries #7 | 0 | - | 4.93 | 83,014 |
| Geography by Picture - A | 0 | - | 4.39 | 60,381 |
| 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 | 47,140 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,464 |
| Islands by Picture | 0 | - | 4.28 | 107,517 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,820 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,218 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,710 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,732 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,259 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 124,446 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,595,320 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,104 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,565 |
| Island Countries | 0 | - | 4.99 | 711,770 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,354 |
| Himalayan Countries | 0 | - | 4.94 | 139,530 |
| Andean Countries | 0 | - | 4.94 | 85,064 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,247 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,457 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,806 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,118 |
| Danube Countries | 0 | - | 4.97 | 72,209 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,308 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,624 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,711 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,216 |
| European Landlocked Countries | 0 | - | 4.99 | 147,378 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,982 |
| Countries with the Most Species | 0 | - | 4.99 | 103,422 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,113 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,681 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,793 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,697 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,439 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,851 |
| Countries in the Alps | 0 | - | 4.87 | 118,494 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,080 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,457 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,813 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,813 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,749 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,098 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,923 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,674 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,299 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,018 |
| 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 | 104,389 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,639 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,721 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,380 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,475 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,240 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,364 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,924 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,659 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,381 |
| Largest Countries By Category | 0 | - | 4.97 | 158,548 |
| Countries by Countries | 0 | - | 4.96 | 63,443 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,012 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,348 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,622 |
