| All Country Flags of the World | 0 | - | 5.00 | 3,718,909 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,546,799 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,097,667 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 736,777 |
| Flags with Crescents | 0 | - | 4.98 | 171,521 |
| Country Flag Trivia | 0 | - | 4.82 | 58,178 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 105,024 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,526 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 88,729 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 68,046 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 86,073 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.81 | 53,553 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 146,469 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 117,468 |
| Flags with the Most Stars | 0 | - | 4.91 | 138,046 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 63,268 |
| Flags that are Red & White Only | 0 | - | 4.97 | 165,710 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 147,438 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 77,780 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 48,488 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 69,431 |
| Country Flags with the Most Red | 0 | - | 4.98 | 121,440 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 93,358 |
| Country Flags with the Most Green | 0 | - | 4.96 | 100,424 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 100,209 |
| Country Flags with the Most Yellow | 0 | - | 4.95 | 99,813 |
| Country Flags with the Most Black | 0 | - | 4.95 | 98,220 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 68,149 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,526 |
| Country Flags Slideshow | 0 | - | 4.91 | 47,977 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 100,122 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 81,475 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,724 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,797 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 32,765 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,816 |
| Flags of North and South America | 0 | - | 4.99 | 377,460 |
| Flags to Languages | 0 | - | 4.95 | 174,602 |
| Former Flags | 0 | - | 4.97 | 108,689 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 36,267 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 51,075 |
| Country Flags With Blue Removed | 0 | - | 4.89 | 45,056 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,796 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.94 | 31,247 |
| 20 Random Country Flags | 0 | - | 4.99 | 619,723 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 113,328 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,637 |
| Flags of the Mediterranean | 0 | - | 4.94 | 149,440 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 145,541 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 282,229 |
| Flag Maths | 0 | - | 4.61 | 57,856 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 146,942 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 83,223 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 49,303 |
| Countries by Coat of Arms #1 | 0 | - | 4.92 | 73,093 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,663 |
| World Coats of Arms | 0 | - | 4.99 | 65,241 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 143,658 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,917 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.96 | 172,821 |
| Similar Flags #1 | 0 | - | 4.75 | 130,872 |
| Similar Flags #2 | 0 | - | 4.74 | 138,134 |
| Emoji Flags | 0 | - | 4.35 | 44,302 |
| Countries by Road Signs | 0 | - | 4.98 | 54,394 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 62,203 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,566 |
| Countries by Partial Flag Images #8 | 0 | - | 4.78 | 26,511 |
| Select the World Flags | 0 | - | 4.28 | 38,012 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 76,601 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 59,188 |
| Name a Valid Country Flag | 0 | - | 4.70 | 77,061 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,803 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 70,518 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 67,564 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.51 | 47,152 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,730 |
| Countries by Picture #1 | 0 | - | 4.52 | 119,468 |
| Countries by Picture #3 | 0 | - | 4.51 | 61,085 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 48,234 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,259,579 |
| Flags of Asia Quiz | 0 | - | 4.99 | 621,098 |
| Pixelated World Map | 0 | - | 5.00 | 144,164 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 62,108 |
| Flags of Africa Quiz | 0 | - | 5.00 | 478,319 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 77,739 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.60 | 43,942 |
| Satellite Images - Europe | 0 | - | 4.47 | 105,254 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,439 |
| Cities by Satellite #1 | 0 | - | 4.37 | 82,509 |
| Cities by Satellite #2 | 0 | - | 4.49 | 25,439 |
| Countries by Picture #4 | 0 | - | 4.15 | 46,818 |
| Countries by Picture #2 | 0 | - | 4.38 | 72,410 |
| Countries by Picture #5 | 0 | - | 4.25 | 44,717 |
| Countries by Picture #6 | 0 | - | 4.16 | 37,243 |
| Geography by Picture - B | 0 | - | 4.42 | 55,803 |
| Geography by Picture - H | 0 | - | 4.50 | 58,406 |
| Geography by Picture - N | 0 | - | 4.45 | 42,366 |
| Geography by Picture - R | 0 | - | 4.56 | 41,168 |
| Geography by Picture - T | 0 | - | 4.54 | 58,023 |
| Flags of Oceania | 0 | - | 5.00 | 263,066 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,700 |
| Flags of WW1 | 0 | - | 4.60 | 38,732 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,552 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,510 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,823 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,537 |
| Boundary Waters | 0 | - | 4.92 | 88,803 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,430 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,765 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,426 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 61,012 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 71,027 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,922,801 |
| Landlocked Countries | 0 | - | 4.99 | 426,602 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 590,239 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,829 |
| Satellite Images #1 | 0 | - | 4.46 | 130,030 |
| Satellite Images Quiz #2 | 0 | - | 4.64 | 109,725 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 89,420 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,274 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,245 |
| Cities by Picture #1 | 0 | - | 4.74 | 86,618 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.50 | 24,903 |
| World Capitals Quiz | 0 | - | 5.00 | 5,109,796 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,808,071 |
| Merged Countries #2 | 0 | - | 4.96 | 99,916 |
| Merged Countries #4 | 0 | - | 4.81 | 94,157 |
| Merged Countries #6 | 0 | - | 4.90 | 73,851 |
| Merged Countries #7 | 0 | - | 4.93 | 83,186 |
| Geography by Picture - A | 0 | - | 4.39 | 60,455 |
| Geography by Picture - D | 0 | - | 4.15 | 45,803 |
| Geography by Picture - F | 0 | - | 4.31 | 51,204 |
| Geography by Picture - G | 0 | - | 4.39 | 48,098 |
| Geography by Picture - J | 0 | - | 4.16 | 38,617 |
| Geography by Picture - K | 0 | - | 4.29 | 33,268 |
| Geography by Picture - C | 0 | - | 4.31 | 57,255 |
| Geography by Picture - L | 0 | - | 4.37 | 59,154 |
| Geography by Picture - M | 0 | - | 4.14 | 40,596 |
| Geography by Picture - P | 0 | - | 4.24 | 42,585 |
| Geography by Picture - S | 0 | - | 4.38 | 47,195 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,531 |
| Islands by Picture | 0 | - | 4.28 | 107,874 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,954 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,449 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,069 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,098 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,996 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 124,753 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,600,869 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,865 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,019 |
| Island Countries | 0 | - | 4.99 | 712,767 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,581 |
| Himalayan Countries | 0 | - | 4.93 | 140,515 |
| Andean Countries | 0 | - | 4.94 | 85,636 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,769 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,236 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,325 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,559 |
| Danube Countries | 0 | - | 4.97 | 72,474 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,690 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,903 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,277 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,743 |
| European Landlocked Countries | 0 | - | 4.99 | 147,675 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,410 |
| Countries with the Most Species | 0 | - | 4.99 | 103,607 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,516 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,791 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,916 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,881 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,621 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,077 |
| Countries in the Alps | 0 | - | 4.87 | 118,860 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,806 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,006 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,014 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,096 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,042 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,327 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,474 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,926 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,468 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,241 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,916 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,787 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,618 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,854 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,953 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,005 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,662 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,660 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,756 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,970 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,316 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,557 |
| Largest Countries By Category | 0 | - | 4.97 | 158,956 |
| Countries by Countries | 0 | - | 4.97 | 63,717 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,337 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,427 |
