| All Country Flags of the World | 0 | - | 5.00 | 3,624,679 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,530,417 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,089,345 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 731,054 |
| Flags with Crescents | 0 | - | 4.98 | 168,253 |
| Country Flag Trivia | 0 | - | 4.81 | 56,276 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 102,851 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,798 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 86,392 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,752 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,647 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,318 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 143,706 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 115,073 |
| Flags with the Most Stars | 0 | - | 4.91 | 135,537 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 61,716 |
| Flags that are Red & White Only | 0 | - | 4.97 | 163,415 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 145,219 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 75,179 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,011 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,001 |
| Country Flags with the Most Red | 0 | - | 4.98 | 119,800 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 92,039 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,135 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 98,898 |
| Country Flags with the Most Yellow | 0 | - | 4.95 | 98,606 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,084 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,445 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,836 |
| Country Flags Slideshow | 0 | - | 4.91 | 46,989 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 98,973 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,280 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 65,470 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 44,597 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,196 |
| Flags of North and South America | 0 | - | 4.99 | 369,671 |
| Flags to Languages | 0 | - | 4.95 | 172,921 |
| Former Flags | 0 | - | 4.97 | 107,095 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,748 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,182 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,048 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 31,338 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,558 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,808 |
| 20 Random Country Flags | 0 | - | 4.99 | 607,690 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,300 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 82,848 |
| Flags of the Mediterranean | 0 | - | 4.94 | 147,876 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 143,891 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 279,170 |
| Flag Maths | 0 | - | 4.63 | 57,700 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,843 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 82,150 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,584 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,513 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,362 |
| World Coats of Arms | 0 | - | 4.99 | 64,092 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 141,841 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,181 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 170,456 |
| Similar Flags #1 | 0 | - | 4.74 | 129,430 |
| Similar Flags #2 | 0 | - | 4.74 | 136,712 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.64 | 37,620 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,474 |
| Emoji Flags | 0 | - | 4.35 | 43,905 |
| Countries by Road Signs | 0 | - | 4.98 | 53,349 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,220 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,090 |
| Countries by Partial Flag Images #8 | 0 | - | 4.77 | 23,143 |
| Select the World Flags | 0 | - | 4.27 | 37,525 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 75,512 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,708 |
| Name a Valid Country Flag | 0 | - | 4.67 | 75,146 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,167 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 69,819 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 66,963 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.53 | 46,775 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,328 |
| Countries by Picture #1 | 0 | - | 4.53 | 98,587 |
| Countries by Picture #3 | 0 | - | 4.51 | 59,106 |
| Guess the Country by a Picture Hint | 0 | - | 4.42 | 47,538 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,233,335 |
| Flags of Asia Quiz | 0 | - | 4.99 | 608,392 |
| Pixelated World Map | 0 | - | 5.00 | 142,816 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 60,949 |
| Flags of Africa Quiz | 0 | - | 5.00 | 466,171 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 76,682 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.61 | 43,387 |
| Satellite Images - Europe | 0 | - | 4.47 | 103,997 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,043 |
| Cities by Satellite #1 | 0 | - | 4.38 | 80,554 |
| Cities by Satellite #2 | 0 | - | 4.49 | 24,961 |
| Countries by Picture #4 | 0 | - | 4.15 | 45,134 |
| Countries by Picture #2 | 0 | - | 4.37 | 69,700 |
| Countries by Picture #5 | 0 | - | 4.25 | 43,228 |
| Countries by Picture #6 | 0 | - | 4.15 | 35,977 |
| Geography by Picture - B | 0 | - | 4.42 | 55,489 |
| Geography by Picture - H | 0 | - | 4.50 | 58,104 |
| Geography by Picture - N | 0 | - | 4.45 | 42,100 |
| Geography by Picture - R | 0 | - | 4.56 | 40,926 |
| Geography by Picture - T | 0 | - | 4.54 | 57,739 |
| Merged Company Logos #3 | 0 | - | 4.49 | 64,174 |
| Flags of Oceania | 0 | - | 5.00 | 256,651 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,395 |
| Flags of WW1 | 0 | - | 4.60 | 38,122 |
| Flag Vocabulary Mega-Challenge | 0 | - | 4.34 | 27,037 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,665 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,354 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,728 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,168 |
| Boundary Waters | 0 | - | 4.92 | 88,191 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,932 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,589 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,725 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 60,063 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 69,977 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,118,518 |
| Landlocked Countries | 0 | - | 4.99 | 416,061 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 560,243 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,244 |
| Satellite Images #1 | 0 | - | 4.46 | 129,153 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,112 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,757 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,753 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,874 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,594 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,776 |
| World Capitals Quiz | 0 | - | 5.00 | 5,046,953 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,736,619 |
| Merged Countries #2 | 0 | - | 4.96 | 98,665 |
| Merged Countries #6 | 0 | - | 4.90 | 72,919 |
| Merged Countries #7 | 0 | - | 4.93 | 82,160 |
| Geography by Picture - A | 0 | - | 4.39 | 60,117 |
| Geography by Picture - D | 0 | - | 4.15 | 45,551 |
| Geography by Picture - F | 0 | - | 4.31 | 50,885 |
| Geography by Picture - G | 0 | - | 4.38 | 47,855 |
| Geography by Picture - J | 0 | - | 4.16 | 38,376 |
| Geography by Picture - K | 0 | - | 4.29 | 33,050 |
| Geography by Picture - C | 0 | - | 4.31 | 56,981 |
| Geography by Picture - L | 0 | - | 4.37 | 58,835 |
| Geography by Picture - M | 0 | - | 4.14 | 40,376 |
| Geography by Picture - P | 0 | - | 4.24 | 42,343 |
| Geography by Picture - S | 0 | - | 4.38 | 46,959 |
| Merged Company Logos #4 | 0 | - | 4.39 | 52,191 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,238 |
| Islands by Picture | 0 | - | 4.29 | 106,301 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,324 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,269 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,206 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,466 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,407 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 123,301 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,576,504 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,548 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,307 |
| Island Countries | 0 | - | 4.99 | 708,616 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,639 |
| Himalayan Countries | 0 | - | 4.95 | 136,254 |
| Andean Countries | 0 | - | 4.95 | 83,337 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,610 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,823 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,311 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,927 |
| Danube Countries | 0 | - | 4.97 | 71,335 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,118 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,794 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,023 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,979 |
| European Landlocked Countries | 0 | - | 4.99 | 146,054 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,663 |
| Countries with the Most Species | 0 | - | 4.99 | 98,022 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,809 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,304 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,479 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,116 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,763 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,134 |
| Countries in the Alps | 0 | - | 4.86 | 117,257 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,845 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,763 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,213 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,667 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,586 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,207 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,917 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,956 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,755 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,286 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,327 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,184 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,676 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,941 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,945 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,610 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,853 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,388 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,134 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,689 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,432 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,782 |
