| All Country Flags of the World | 0 | - | 5.00 | 3,675,303 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,539,152 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,883 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,124 |
| Flags with Crescents | 0 | - | 4.98 | 169,944 |
| Country Flag Trivia | 0 | - | 4.81 | 57,243 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,022 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,714 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,678 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,428 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,400 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,980 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 145,114 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 116,311 |
| Flags with the Most Stars | 0 | - | 4.91 | 136,818 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,523 |
| Flags that are Red & White Only | 0 | - | 4.97 | 164,646 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 146,350 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 76,543 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,767 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,701 |
| Country Flags with the Most Red | 0 | - | 4.98 | 120,688 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 92,713 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,803 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,589 |
| Country Flags with the Most Yellow | 0 | - | 4.94 | 99,237 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,673 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,804 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,204 |
| Country Flags Slideshow | 0 | - | 4.91 | 47,494 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,589 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,931 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,125 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,224 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 32,082 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,543 |
| Flags of North and South America | 0 | - | 4.99 | 373,927 |
| Flags to Languages | 0 | - | 4.95 | 173,843 |
| Former Flags | 0 | - | 4.97 | 107,906 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 36,013 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,644 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,584 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,267 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 31,033 |
| 20 Random Country Flags | 0 | - | 4.99 | 613,957 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,863 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,264 |
| Flags of the Mediterranean | 0 | - | 4.94 | 148,737 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,769 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 280,825 |
| Flag Maths | 0 | - | 4.64 | 57,783 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 146,107 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 82,814 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 49,043 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,835 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,536 |
| World Coats of Arms | 0 | - | 4.99 | 64,648 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 142,786 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,951 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.96 | 171,825 |
| Similar Flags #1 | 0 | - | 4.75 | 130,205 |
| Similar Flags #2 | 0 | - | 4.74 | 137,494 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.68 | 37,959 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,162 |
| Emoji Flags | 0 | - | 4.35 | 44,141 |
| Countries by Road Signs | 0 | - | 4.98 | 53,979 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,711 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,188 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,322 |
| Countries by Partial Flag Images #8 | 0 | - | 4.78 | 25,259 |
| Select the World Flags | 0 | - | 4.27 | 37,819 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 76,106 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,967 |
| Name a Valid Country Flag | 0 | - | 4.69 | 75,905 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,528 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 70,218 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 67,295 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.53 | 46,983 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,557 |
| Countries by Picture #1 | 0 | - | 4.51 | 117,904 |
| Countries by Picture #3 | 0 | - | 4.51 | 60,852 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 47,963 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,247,116 |
| Flags of Asia Quiz | 0 | - | 4.99 | 615,262 |
| Pixelated World Map | 0 | - | 5.00 | 143,564 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 61,546 |
| Flags of Africa Quiz | 0 | - | 5.00 | 472,600 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 77,268 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.60 | 43,716 |
| Satellite Images - Europe | 0 | - | 4.47 | 104,657 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,251 |
| Cities by Satellite #1 | 0 | - | 4.37 | 81,293 |
| Cities by Satellite #2 | 0 | - | 4.49 | 25,113 |
| Countries by Picture #4 | 0 | - | 4.15 | 46,625 |
| Countries by Picture #2 | 0 | - | 4.38 | 72,079 |
| Countries by Picture #5 | 0 | - | 4.25 | 44,517 |
| Countries by Picture #6 | 0 | - | 4.16 | 37,083 |
| Geography by Picture - B | 0 | - | 4.42 | 55,659 |
| Geography by Picture - H | 0 | - | 4.50 | 58,270 |
| Geography by Picture - N | 0 | - | 4.45 | 42,237 |
| Geography by Picture - R | 0 | - | 4.56 | 41,062 |
| Geography by Picture - T | 0 | - | 4.54 | 57,888 |
| Merged Company Logos #3 | 0 | - | 4.49 | 64,582 |
| Flags of Oceania | 0 | - | 5.00 | 260,104 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,592 |
| Flags of WW1 | 0 | - | 4.60 | 38,464 |
| Flag Vocabulary Mega-Challenge | 0 | - | 4.34 | 27,229 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,127 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,986 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,346 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,930 |
| Boundary Waters | 0 | - | 4.92 | 88,538 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,227 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,218 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,643 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,561 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,527 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,551,887 |
| Landlocked Countries | 0 | - | 4.99 | 421,569 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 575,731 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,559 |
| Satellite Images #1 | 0 | - | 4.47 | 129,446 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,370 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,968 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,993 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,026 |
| Cities by Picture #1 | 0 | - | 4.73 | 86,127 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,836 |
| World Capitals Quiz | 0 | - | 5.00 | 5,081,019 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,775,858 |
| Merged Countries #2 | 0 | - | 4.96 | 99,221 |
| Merged Countries #6 | 0 | - | 4.90 | 73,425 |
| Merged Countries #7 | 0 | - | 4.93 | 82,763 |
| Geography by Picture - A | 0 | - | 4.39 | 60,306 |
| Geography by Picture - D | 0 | - | 4.15 | 45,695 |
| Geography by Picture - F | 0 | - | 4.31 | 51,054 |
| Geography by Picture - G | 0 | - | 4.39 | 47,984 |
| Geography by Picture - J | 0 | - | 4.16 | 38,498 |
| Geography by Picture - K | 0 | - | 4.29 | 33,164 |
| Geography by Picture - C | 0 | - | 4.31 | 57,116 |
| Geography by Picture - L | 0 | - | 4.37 | 59,027 |
| Geography by Picture - M | 0 | - | 4.14 | 40,495 |
| Geography by Picture - P | 0 | - | 4.24 | 42,468 |
| Geography by Picture - S | 0 | - | 4.38 | 47,075 |
| Merged Company Logos #4 | 0 | - | 4.39 | 52,524 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,407 |
| Islands by Picture | 0 | - | 4.28 | 107,173 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,687 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,983 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,354 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,359 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,246 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 124,119 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,589,570 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,398 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,962 |
| Island Countries | 0 | - | 4.99 | 710,900 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,247 |
| Himalayan Countries | 0 | - | 4.95 | 138,542 |
| Andean Countries | 0 | - | 4.93 | 84,507 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,692 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,686 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,324 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,726 |
| Danube Countries | 0 | - | 4.97 | 71,957 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,957 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,377 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,216 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,687 |
| European Landlocked Countries | 0 | - | 4.99 | 147,084 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,554 |
| Countries with the Most Species | 0 | - | 4.99 | 103,193 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,689 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,558 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,701 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,509 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,191 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,613 |
| Countries in the Alps | 0 | - | 4.87 | 118,143 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,829 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,967 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,617 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,557 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,447 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,918 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,623 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,455 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,154 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,807 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,628 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,492 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,181 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,431 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,482 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,800 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,275 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,065 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,995 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,732 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,980 |
