| All Country Flags of the World | 0 | - | 5.00 | 3,670,703 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,538,277 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,449 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,814 |
| Flags with Crescents | 0 | - | 4.98 | 169,787 |
| Country Flag Trivia | 0 | - | 4.81 | 57,160 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,935 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,634 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,565 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,367 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,317 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,909 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 144,988 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 116,204 |
| Flags with the Most Stars | 0 | - | 4.91 | 136,703 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,462 |
| Flags that are Red & White Only | 0 | - | 4.97 | 164,568 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 146,236 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 76,405 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,691 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,633 |
| Country Flags with the Most Red | 0 | - | 4.98 | 120,613 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 92,646 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,745 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,520 |
| Country Flags with the Most Yellow | 0 | - | 4.95 | 99,178 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,609 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,766 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,169 |
| Country Flags Slideshow | 0 | - | 4.91 | 47,449 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,524 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,860 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,069 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,168 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 32,008 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,509 |
| Flags of North and South America | 0 | - | 4.99 | 373,588 |
| Flags to Languages | 0 | - | 4.95 | 173,749 |
| Former Flags | 0 | - | 4.97 | 107,832 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,985 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,608 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,534 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,207 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 31,001 |
| 20 Random Country Flags | 0 | - | 4.99 | 613,411 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,802 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,220 |
| Flags of the Mediterranean | 0 | - | 4.94 | 148,660 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,676 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 280,677 |
| Flag Maths | 0 | - | 4.64 | 57,774 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 145,985 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 82,769 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 49,000 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,804 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,523 |
| World Coats of Arms | 0 | - | 4.99 | 64,607 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 142,679 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,889 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 171,654 |
| Similar Flags #1 | 0 | - | 4.75 | 130,140 |
| Similar Flags #2 | 0 | - | 4.74 | 137,430 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.67 | 37,922 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,107 |
| Emoji Flags | 0 | - | 4.35 | 44,123 |
| Countries by Road Signs | 0 | - | 4.98 | 53,891 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,668 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,124 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,303 |
| Countries by Partial Flag Images #8 | 0 | - | 4.78 | 25,095 |
| Select the World Flags | 0 | - | 4.27 | 37,786 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 76,048 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,947 |
| Name a Valid Country Flag | 0 | - | 4.69 | 75,819 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,492 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 70,183 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 67,270 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.53 | 46,961 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,539 |
| Countries by Picture #1 | 0 | - | 4.51 | 116,982 |
| Countries by Picture #3 | 0 | - | 4.51 | 60,770 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 47,922 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,245,748 |
| Flags of Asia Quiz | 0 | - | 4.99 | 614,333 |
| Pixelated World Map | 0 | - | 5.00 | 143,490 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 61,487 |
| Flags of Africa Quiz | 0 | - | 5.00 | 472,037 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 77,197 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.60 | 43,679 |
| Satellite Images - Europe | 0 | - | 4.47 | 104,606 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,232 |
| Cities by Satellite #1 | 0 | - | 4.37 | 81,165 |
| Cities by Satellite #2 | 0 | - | 4.49 | 25,087 |
| Countries by Picture #4 | 0 | - | 4.15 | 46,562 |
| Countries by Picture #2 | 0 | - | 4.38 | 71,977 |
| Countries by Picture #5 | 0 | - | 4.25 | 44,459 |
| Countries by Picture #6 | 0 | - | 4.16 | 37,029 |
| Geography by Picture - B | 0 | - | 4.42 | 55,644 |
| Geography by Picture - H | 0 | - | 4.50 | 58,262 |
| Geography by Picture - N | 0 | - | 4.45 | 42,226 |
| Geography by Picture - R | 0 | - | 4.56 | 41,048 |
| Geography by Picture - T | 0 | - | 4.54 | 57,875 |
| Merged Company Logos #3 | 0 | - | 4.49 | 64,535 |
| Flags of Oceania | 0 | - | 5.00 | 259,794 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,469 |
| Flags of WW1 | 0 | - | 4.60 | 38,431 |
| Flag Vocabulary Mega-Challenge | 0 | - | 4.34 | 27,201 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,087 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,928 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,287 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,855 |
| Boundary Waters | 0 | - | 4.92 | 88,508 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,200 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,167 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,556 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,514 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,473 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,509,707 |
| Landlocked Countries | 0 | - | 4.99 | 421,103 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 574,145 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,529 |
| Satellite Images #1 | 0 | - | 4.47 | 129,418 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,344 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,951 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,964 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,011 |
| Cities by Picture #1 | 0 | - | 4.73 | 86,074 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,831 |
| World Capitals Quiz | 0 | - | 5.00 | 5,077,902 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,772,027 |
| Merged Countries #2 | 0 | - | 4.96 | 99,142 |
| Merged Countries #6 | 0 | - | 4.90 | 73,348 |
| Merged Countries #7 | 0 | - | 4.93 | 82,685 |
| Geography by Picture - A | 0 | - | 4.39 | 60,294 |
| Geography by Picture - D | 0 | - | 4.15 | 45,684 |
| Geography by Picture - F | 0 | - | 4.31 | 51,038 |
| Geography by Picture - G | 0 | - | 4.39 | 47,975 |
| Geography by Picture - J | 0 | - | 4.16 | 38,490 |
| Geography by Picture - K | 0 | - | 4.29 | 33,156 |
| Geography by Picture - C | 0 | - | 4.31 | 57,107 |
| Geography by Picture - L | 0 | - | 4.37 | 59,003 |
| Geography by Picture - M | 0 | - | 4.14 | 40,486 |
| Geography by Picture - P | 0 | - | 4.24 | 42,456 |
| Geography by Picture - S | 0 | - | 4.38 | 47,066 |
| Merged Company Logos #4 | 0 | - | 4.39 | 52,481 |
| Islands by Shape #1 | 0 | - | 4.33 | 84,391 |
| Islands by Picture | 0 | - | 4.28 | 107,095 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,653 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,914 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,262 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,280 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,811 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 124,027 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,588,131 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,262 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,659 |
| Island Countries | 0 | - | 4.99 | 710,686 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,022 |
| Himalayan Countries | 0 | - | 4.95 | 138,338 |
| Andean Countries | 0 | - | 4.93 | 84,386 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,609 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,526 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,236 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,643 |
| Danube Countries | 0 | - | 4.97 | 71,907 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,884 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,310 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,111 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,579 |
| European Landlocked Countries | 0 | - | 4.99 | 147,041 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,473 |
| Countries with the Most Species | 0 | - | 4.99 | 103,154 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,622 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,537 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,678 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,475 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,156 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,566 |
| Countries in the Alps | 0 | - | 4.87 | 118,053 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,425 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,847 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,584 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,513 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,393 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,876 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,552 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,411 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,118 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,758 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,588 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,451 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,124 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,392 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,422 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,679 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,222 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,729 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,904 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,498 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,840 |
