| All Country Flags of the World | 0 | - | 5.00 | 3,684,653 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,540,879 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,094,662 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,659 |
| Flags with Crescents | 0 | - | 4.98 | 170,422 |
| Country Flag Trivia | 0 | - | 4.81 | 57,451 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,225 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,892 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,885 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,537 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,536 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 53,109 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 145,328 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 116,498 |
| Flags with the Most Stars | 0 | - | 4.91 | 137,043 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,642 |
| Flags that are Red & White Only | 0 | - | 4.97 | 164,858 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 146,536 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 76,748 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,891 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,817 |
| Country Flags with the Most Red | 0 | - | 4.98 | 120,821 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 92,815 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,915 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,706 |
| Country Flags with the Most Yellow | 0 | - | 4.95 | 99,336 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,775 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,853 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,261 |
| Country Flags Slideshow | 0 | - | 4.91 | 47,584 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,700 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 81,035 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,243 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,329 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 32,209 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,599 |
| Flags of North and South America | 0 | - | 4.99 | 374,658 |
| Flags to Languages | 0 | - | 4.95 | 173,982 |
| Former Flags | 0 | - | 4.97 | 108,031 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 36,048 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,739 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,673 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,372 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.94 | 31,077 |
| 20 Random Country Flags | 0 | - | 4.99 | 615,157 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,968 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,335 |
| Flags of the Mediterranean | 0 | - | 4.94 | 148,879 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,906 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 281,153 |
| Flag Maths | 0 | - | 4.64 | 57,797 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 146,285 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 82,906 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 49,089 |
| Countries by Coat of Arms #1 | 0 | - | 4.92 | 72,893 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,560 |
| World Coats of Arms | 0 | - | 4.99 | 64,780 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 142,957 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,143 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.96 | 172,062 |
| Similar Flags #1 | 0 | - | 4.75 | 130,332 |
| Similar Flags #2 | 0 | - | 4.74 | 137,631 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.68 | 38,028 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,262 |
| Emoji Flags | 0 | - | 4.35 | 44,170 |
| Countries by Road Signs | 0 | - | 4.98 | 54,073 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,795 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,284 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,372 |
| Countries by Partial Flag Images #8 | 0 | - | 4.78 | 25,558 |
| Select the World Flags | 0 | - | 4.27 | 37,855 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 76,220 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 59,012 |
| Name a Valid Country Flag | 0 | - | 4.69 | 76,042 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,582 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 70,287 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 67,356 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.53 | 47,014 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,598 |
| Countries by Picture #1 | 0 | - | 4.52 | 118,719 |
| Countries by Picture #3 | 0 | - | 4.51 | 60,922 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 48,036 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,249,799 |
| Flags of Asia Quiz | 0 | - | 4.99 | 616,449 |
| Pixelated World Map | 0 | - | 5.00 | 143,691 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 61,665 |
| Flags of Africa Quiz | 0 | - | 5.00 | 473,712 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 77,371 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.60 | 43,760 |
| Satellite Images - Europe | 0 | - | 4.47 | 104,799 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,290 |
| Cities by Satellite #1 | 0 | - | 4.36 | 81,610 |
| Cities by Satellite #2 | 0 | - | 4.49 | 25,203 |
| Countries by Picture #4 | 0 | - | 4.15 | 46,684 |
| Countries by Picture #2 | 0 | - | 4.38 | 72,163 |
| Countries by Picture #5 | 0 | - | 4.25 | 44,572 |
| Countries by Picture #6 | 0 | - | 4.16 | 37,137 |
| Geography by Picture - B | 0 | - | 4.42 | 55,685 |
| Geography by Picture - H | 0 | - | 4.50 | 58,294 |
| Geography by Picture - N | 0 | - | 4.45 | 42,261 |
| Geography by Picture - R | 0 | - | 4.56 | 41,080 |
| Geography by Picture - T | 0 | - | 4.54 | 57,912 |
| Merged Company Logos #3 | 0 | - | 4.49 | 64,654 |
| Flags of Oceania | 0 | - | 5.00 | 260,837 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,804 |
| Flags of WW1 | 0 | - | 4.60 | 38,525 |
| Flag Vocabulary Mega-Challenge | 0 | - | 4.34 | 27,276 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,200 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,115 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,435 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,049 |
| Boundary Waters | 0 | - | 4.92 | 88,611 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,279 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,339 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,823 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,673 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,632 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,631,840 |
| Landlocked Countries | 0 | - | 4.99 | 422,604 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 578,925 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,611 |
| Satellite Images #1 | 0 | - | 4.47 | 129,502 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,424 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 89,007 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 50,027 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,054 |
| Cities by Picture #1 | 0 | - | 4.73 | 86,229 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.50 | 24,848 |
| World Capitals Quiz | 0 | - | 5.00 | 5,087,066 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,783,133 |
| Merged Countries #2 | 0 | - | 4.96 | 99,302 |
| Merged Countries #6 | 0 | - | 4.90 | 73,518 |
| Merged Countries #7 | 0 | - | 4.93 | 82,860 |
| Geography by Picture - A | 0 | - | 4.39 | 60,334 |
| Geography by Picture - D | 0 | - | 4.15 | 45,715 |
| Geography by Picture - F | 0 | - | 4.31 | 51,081 |
| Geography by Picture - G | 0 | - | 4.39 | 48,011 |
| Geography by Picture - J | 0 | - | 4.16 | 38,520 |
| Geography by Picture - K | 0 | - | 4.29 | 33,180 |
| Geography by Picture - C | 0 | - | 4.31 | 57,140 |
| Geography by Picture - L | 0 | - | 4.37 | 59,056 |
| Geography by Picture - M | 0 | - | 4.14 | 40,515 |
| Geography by Picture - P | 0 | - | 4.24 | 42,491 |
| Geography by Picture - S | 0 | - | 4.38 | 47,096 |
| Merged Company Logos #4 | 0 | - | 4.39 | 52,578 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,430 |
| Islands by Picture | 0 | - | 4.28 | 107,313 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,741 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,079 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,493 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,509 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,146 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 124,258 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,592,149 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,691 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,708 |
| Island Countries | 0 | - | 4.99 | 711,255 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,828 |
| Himalayan Countries | 0 | - | 4.95 | 139,008 |
| Andean Countries | 0 | - | 4.93 | 84,786 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,013 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,090 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,602 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,921 |
| Danube Countries | 0 | - | 4.97 | 72,096 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,122 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,493 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,447 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,932 |
| European Landlocked Countries | 0 | - | 4.99 | 147,226 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,763 |
| Countries with the Most Species | 0 | - | 4.99 | 103,304 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,880 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,630 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,748 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,597 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,316 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,738 |
| Countries in the Alps | 0 | - | 4.87 | 118,307 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,502 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,174 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,717 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,671 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,584 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,996 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,748 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,567 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,225 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,918 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,690 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,572 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,294 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,538 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,599 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,049 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,366 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,458 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,199 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,271 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,316 |
