| All Country Flags of the World | 0 | - | 5.00 | 3,626,940 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,530,771 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,089,537 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 731,178 |
| Flags with Crescents | 0 | - | 4.98 | 168,327 |
| Country Flag Trivia | 0 | - | 4.81 | 56,324 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 102,901 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,848 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 86,454 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,793 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,670 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,337 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 143,758 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 115,112 |
| Flags with the Most Stars | 0 | - | 4.91 | 135,597 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 61,753 |
| Flags that are Red & White Only | 0 | - | 4.97 | 163,482 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 145,260 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 75,243 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,033 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,023 |
| Country Flags with the Most Red | 0 | - | 4.98 | 119,835 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 92,066 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,162 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 98,926 |
| Country Flags with the Most Yellow | 0 | - | 4.95 | 98,625 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,111 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,462 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,851 |
| Country Flags Slideshow | 0 | - | 4.91 | 47,010 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 98,994 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,301 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 65,491 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 44,627 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,207 |
| Flags of North and South America | 0 | - | 4.99 | 369,876 |
| Flags to Languages | 0 | - | 4.95 | 172,955 |
| Former Flags | 0 | - | 4.97 | 107,127 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,761 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,186 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,075 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 31,367 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,581 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,812 |
| 20 Random Country Flags | 0 | - | 4.99 | 607,907 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,322 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 82,862 |
| Flags of the Mediterranean | 0 | - | 4.94 | 147,910 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 143,934 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 279,240 |
| Flag Maths | 0 | - | 4.64 | 57,701 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,878 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 82,170 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,593 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,528 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,373 |
| World Coats of Arms | 0 | - | 4.99 | 64,113 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 141,887 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,212 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 170,503 |
| Similar Flags #1 | 0 | - | 4.74 | 129,451 |
| Similar Flags #2 | 0 | - | 4.74 | 136,746 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.67 | 37,636 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,499 |
| Emoji Flags | 0 | - | 4.35 | 43,914 |
| Countries by Road Signs | 0 | - | 4.98 | 53,377 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,233 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,094 |
| Countries by Partial Flag Images #8 | 0 | - | 4.77 | 23,328 |
| Select the World Flags | 0 | - | 4.27 | 37,543 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 75,539 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,713 |
| Name a Valid Country Flag | 0 | - | 4.67 | 75,170 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,178 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 69,831 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 66,978 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.53 | 46,780 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,336 |
| Countries by Picture #1 | 0 | - | 4.53 | 98,606 |
| Countries by Picture #3 | 0 | - | 4.51 | 59,115 |
| Guess the Country by a Picture Hint | 0 | - | 4.42 | 47,552 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,233,858 |
| Flags of Asia Quiz | 0 | - | 4.99 | 608,705 |
| Pixelated World Map | 0 | - | 5.00 | 142,836 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 60,976 |
| Flags of Africa Quiz | 0 | - | 5.00 | 466,534 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 76,701 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.61 | 43,401 |
| Satellite Images - Europe | 0 | - | 4.47 | 104,019 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,053 |
| Cities by Satellite #1 | 0 | - | 4.38 | 80,577 |
| Cities by Satellite #2 | 0 | - | 4.49 | 24,967 |
| Countries by Picture #4 | 0 | - | 4.15 | 45,140 |
| Countries by Picture #2 | 0 | - | 4.37 | 69,706 |
| Countries by Picture #5 | 0 | - | 4.25 | 43,233 |
| Countries by Picture #6 | 0 | - | 4.15 | 35,980 |
| Geography by Picture - B | 0 | - | 4.42 | 55,493 |
| Geography by Picture - H | 0 | - | 4.50 | 58,109 |
| Geography by Picture - N | 0 | - | 4.45 | 42,105 |
| Geography by Picture - R | 0 | - | 4.56 | 40,931 |
| Geography by Picture - T | 0 | - | 4.54 | 57,743 |
| Merged Company Logos #3 | 0 | - | 4.49 | 64,186 |
| Flags of Oceania | 0 | - | 5.00 | 256,800 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,444 |
| Flags of WW1 | 0 | - | 4.60 | 38,136 |
| Flag Vocabulary Mega-Challenge | 0 | - | 4.34 | 27,042 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,690 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,380 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,752 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,205 |
| Boundary Waters | 0 | - | 4.92 | 88,207 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,946 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,622 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,768 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 60,092 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 70,003 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,138,403 |
| Landlocked Countries | 0 | - | 4.99 | 416,342 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 561,002 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,257 |
| Satellite Images #1 | 0 | - | 4.46 | 129,165 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,118 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,768 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,758 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,882 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,618 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,781 |
| World Capitals Quiz | 0 | - | 5.00 | 5,048,422 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,738,312 |
| Merged Countries #2 | 0 | - | 4.96 | 98,690 |
| Merged Countries #6 | 0 | - | 4.90 | 72,937 |
| Merged Countries #7 | 0 | - | 4.93 | 82,190 |
| Geography by Picture - A | 0 | - | 4.39 | 60,124 |
| Geography by Picture - D | 0 | - | 4.15 | 45,553 |
| Geography by Picture - F | 0 | - | 4.31 | 50,887 |
| Geography by Picture - G | 0 | - | 4.38 | 47,859 |
| Geography by Picture - J | 0 | - | 4.16 | 38,378 |
| Geography by Picture - K | 0 | - | 4.29 | 33,052 |
| Geography by Picture - C | 0 | - | 4.31 | 56,983 |
| Geography by Picture - L | 0 | - | 4.37 | 58,844 |
| Geography by Picture - M | 0 | - | 4.14 | 40,379 |
| Geography by Picture - P | 0 | - | 4.24 | 42,349 |
| Geography by Picture - S | 0 | - | 4.38 | 46,963 |
| Merged Company Logos #4 | 0 | - | 4.39 | 52,203 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,241 |
| Islands by Picture | 0 | - | 4.29 | 106,340 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,348 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,310 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,248 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,501 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,574 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 123,322 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,577,122 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,689 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,536 |
| Island Countries | 0 | - | 4.99 | 708,711 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,781 |
| Himalayan Countries | 0 | - | 4.95 | 136,375 |
| Andean Countries | 0 | - | 4.95 | 83,412 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,676 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,901 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,366 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,968 |
| Danube Countries | 0 | - | 4.97 | 71,366 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,157 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,821 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,091 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,043 |
| European Landlocked Countries | 0 | - | 4.99 | 146,097 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,707 |
| Countries with the Most Species | 0 | - | 4.99 | 100,475 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,853 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,314 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,490 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,132 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,788 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,158 |
| Countries in the Alps | 0 | - | 4.86 | 117,292 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,872 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,818 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,233 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,710 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,774 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,223 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,950 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,972 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,773 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,309 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,340 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,190 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,698 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,969 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,979 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,648 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,869 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,405 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,200 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,816 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,487 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,794 |
