| All Country Flags of the World | 0 | - | 5.00 | 3,668,380 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,537,879 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,253 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,664 |
| Flags with Crescents | 0 | - | 4.98 | 169,717 |
| Country Flag Trivia | 0 | - | 4.81 | 57,122 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,872 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,586 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,527 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,329 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,285 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,876 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 144,931 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 116,151 |
| Flags with the Most Stars | 0 | - | 4.91 | 136,639 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,415 |
| Flags that are Red & White Only | 0 | - | 4.97 | 164,510 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 146,186 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 76,343 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,657 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,614 |
| Country Flags with the Most Red | 0 | - | 4.98 | 120,567 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 92,607 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,708 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,490 |
| Country Flags with the Most Yellow | 0 | - | 4.95 | 99,149 |
| Country Flags with the Most Black | 0 | - | 4.95 | 97,581 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,751 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,154 |
| Country Flags Slideshow | 0 | - | 4.91 | 47,427 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,496 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,836 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,039 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,140 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 31,969 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,495 |
| Flags of North and South America | 0 | - | 4.99 | 373,408 |
| Flags to Languages | 0 | - | 4.95 | 173,707 |
| Former Flags | 0 | - | 4.97 | 107,801 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,973 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,586 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,511 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,161 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,986 |
| 20 Random Country Flags | 0 | - | 4.99 | 613,092 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,784 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,207 |
| Flags of the Mediterranean | 0 | - | 4.94 | 148,630 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,633 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 280,622 |
| Flag Maths | 0 | - | 4.64 | 57,768 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 145,928 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 82,740 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,985 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,794 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,519 |
| World Coats of Arms | 0 | - | 4.99 | 64,582 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 142,648 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,847 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 171,561 |
| Similar Flags #1 | 0 | - | 4.75 | 130,111 |
| Similar Flags #2 | 0 | - | 4.74 | 137,395 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.67 | 37,900 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,072 |
| Emoji Flags | 0 | - | 4.35 | 44,116 |
| Countries by Road Signs | 0 | - | 4.98 | 53,866 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,649 |
| Famous Landmarks Out Of Focus #1 | 0 | - | 4.89 | 61,096 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,296 |
| Countries by Partial Flag Images #8 | 0 | - | 4.78 | 25,023 |
| Select the World Flags | 0 | - | 4.27 | 37,766 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 76,028 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,936 |
| Name a Valid Country Flag | 0 | - | 4.69 | 75,790 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,477 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 70,169 |
| Countries by Satellite Image #4 | 0 | - | 4.63 | 67,247 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.53 | 46,949 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,529 |
| Countries by Picture #1 | 0 | - | 4.51 | 116,271 |
| Countries by Picture #3 | 0 | - | 4.51 | 60,712 |
| Guess the Country by a Picture Hint | 0 | - | 4.43 | 47,895 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,245,104 |
| Flags of Asia Quiz | 0 | - | 4.99 | 614,027 |
| Pixelated World Map | 0 | - | 5.00 | 143,455 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 61,455 |
| Flags of Africa Quiz | 0 | - | 5.00 | 471,779 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 77,150 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.60 | 43,664 |
| Satellite Images - Europe | 0 | - | 4.47 | 104,574 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,220 |
| Cities by Satellite #1 | 0 | - | 4.37 | 81,148 |
| Cities by Satellite #2 | 0 | - | 4.49 | 25,082 |
| Countries by Picture #4 | 0 | - | 4.15 | 46,516 |
| Countries by Picture #2 | 0 | - | 4.38 | 71,887 |
| Countries by Picture #5 | 0 | - | 4.25 | 44,414 |
| Countries by Picture #6 | 0 | - | 4.16 | 36,990 |
| Geography by Picture - B | 0 | - | 4.42 | 55,627 |
| Geography by Picture - H | 0 | - | 4.50 | 58,252 |
| Geography by Picture - N | 0 | - | 4.45 | 42,220 |
| Geography by Picture - R | 0 | - | 4.56 | 41,042 |
| Geography by Picture - T | 0 | - | 4.54 | 57,869 |
| Merged Company Logos #3 | 0 | - | 4.49 | 64,508 |
| Flags of Oceania | 0 | - | 5.00 | 259,661 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,420 |
| Flags of WW1 | 0 | - | 4.60 | 38,415 |
| Flag Vocabulary Mega-Challenge | 0 | - | 4.34 | 27,189 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,062 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,903 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,259 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,810 |
| Boundary Waters | 0 | - | 4.92 | 88,491 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,185 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,143 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,515 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,494 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,451 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,490,194 |
| Landlocked Countries | 0 | - | 4.99 | 420,872 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 573,454 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,512 |
| Satellite Images #1 | 0 | - | 4.47 | 129,409 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,334 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,941 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,952 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 39,005 |
| Cities by Picture #1 | 0 | - | 4.73 | 86,051 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,828 |
| World Capitals Quiz | 0 | - | 5.00 | 5,076,395 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,770,243 |
| Merged Countries #2 | 0 | - | 4.96 | 99,118 |
| Merged Countries #6 | 0 | - | 4.90 | 73,325 |
| Merged Countries #7 | 0 | - | 4.93 | 82,670 |
| Geography by Picture - A | 0 | - | 4.39 | 60,283 |
| Geography by Picture - D | 0 | - | 4.15 | 45,675 |
| Geography by Picture - F | 0 | - | 4.31 | 51,027 |
| Geography by Picture - G | 0 | - | 4.38 | 47,968 |
| Geography by Picture - J | 0 | - | 4.16 | 38,486 |
| Geography by Picture - K | 0 | - | 4.29 | 33,147 |
| Geography by Picture - C | 0 | - | 4.31 | 57,093 |
| Geography by Picture - L | 0 | - | 4.37 | 58,995 |
| Geography by Picture - M | 0 | - | 4.14 | 40,483 |
| Geography by Picture - P | 0 | - | 4.24 | 42,452 |
| Geography by Picture - S | 0 | - | 4.38 | 47,059 |
| Merged Company Logos #4 | 0 | - | 4.39 | 52,467 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,386 |
| Islands by Picture | 0 | - | 4.28 | 107,051 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,638 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,880 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,231 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,239 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,602 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 123,980 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,587,469 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,159 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,497 |
| Island Countries | 0 | - | 4.99 | 710,584 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,943 |
| Himalayan Countries | 0 | - | 4.95 | 138,247 |
| Andean Countries | 0 | - | 4.95 | 84,339 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,566 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,462 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,189 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,612 |
| Danube Countries | 0 | - | 4.97 | 71,880 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,849 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,281 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,067 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,525 |
| European Landlocked Countries | 0 | - | 4.99 | 147,011 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,435 |
| Countries with the Most Species | 0 | - | 4.99 | 103,131 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,580 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,527 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,671 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,465 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,143 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,544 |
| Countries in the Alps | 0 | - | 4.87 | 118,019 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,121 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,800 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,566 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,492 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,362 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,858 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,516 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,378 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,102 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,728 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,578 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,436 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,101 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,374 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,399 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,631 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,203 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,717 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,864 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,377 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,775 |
