| All Country Flags of the World | 0 | - | 5.00 | 3,604,896 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,526,868 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,087,654 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 729,847 |
| Flags with Crescents | 0 | - | 4.98 | 167,644 |
| Country Flag Trivia | 0 | - | 4.81 | 55,976 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 102,480 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,500 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 85,962 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,499 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,415 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,076 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 142,819 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 114,269 |
| Flags with the Most Stars | 0 | - | 4.91 | 134,980 |
| Country Flags with the Southern Cross | 0 | - | 4.83 | 61,412 |
| Flags that are Red & White Only | 0 | - | 4.97 | 161,781 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 144,717 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 74,341 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 46,662 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 67,687 |
| Country Flags with the Most Red | 0 | - | 4.98 | 119,425 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 91,770 |
| Country Flags with the Most Green | 0 | - | 4.96 | 98,845 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 98,612 |
| Country Flags with the Most Yellow | 0 | - | 4.94 | 98,336 |
| Country Flags with the Most Black | 0 | - | 4.95 | 96,853 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,292 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,691 |
| Country Flags Slideshow | 0 | - | 4.91 | 46,791 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 98,423 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 79,718 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 64,790 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 44,000 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,059 |
| Flags of North and South America | 0 | - | 4.99 | 367,660 |
| Flags to Languages | 0 | - | 4.95 | 172,553 |
| Former Flags | 0 | - | 4.97 | 106,744 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,634 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,158 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 43,819 |
| Countries by Partial Flag Images #7 | 0 | - | 4.89 | 30,617 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,309 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,716 |
| 20 Random Country Flags | 0 | - | 4.99 | 604,750 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,097 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 82,650 |
| Flags of the Mediterranean | 0 | - | 4.94 | 147,574 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 143,511 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 278,470 |
| Flag Maths | 0 | - | 4.78 | 57,681 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,422 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 81,986 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,455 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,380 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,287 |
| World Coats of Arms | 0 | - | 4.99 | 63,887 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 141,440 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 52,846 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 169,979 |
| Similar Flags #1 | 0 | - | 4.74 | 129,152 |
| Similar Flags #2 | 0 | - | 4.74 | 136,407 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.64 | 37,485 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,180 |
| Emoji Flags | 0 | - | 4.35 | 43,826 |
| Countries by Road Signs | 0 | - | 4.98 | 53,125 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,057 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,004 |
| Select the World Flags | 0 | - | 4.27 | 37,420 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 75,328 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,589 |
| Name a Valid Country Flag | 0 | - | 4.67 | 74,850 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,069 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 69,700 |
| Countries by Satellite Image #4 | 0 | - | 4.61 | 66,846 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.55 | 46,689 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,229 |
| Countries by Picture #1 | 0 | - | 4.53 | 98,402 |
| Countries by Picture #3 | 0 | - | 4.51 | 58,995 |
| Guess the Country by a Picture Hint | 0 | - | 4.42 | 47,408 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,227,561 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,936 |
| Pixelated World Map | 0 | - | 5.00 | 142,485 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 60,711 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,751 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 76,419 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.61 | 43,277 |
| Satellite Images - Europe | 0 | - | 4.47 | 103,731 |
| European Cities by Picture #2 | 0 | - | 4.45 | 37,946 |
| Cities by Satellite #1 | 0 | - | 4.38 | 80,301 |
| Cities by Satellite #2 | 0 | - | 4.49 | 24,919 |
| Countries by Picture #4 | 0 | - | 4.15 | 45,049 |
| Countries by Picture #2 | 0 | - | 4.37 | 69,580 |
| Countries by Picture #5 | 0 | - | 4.25 | 43,161 |
| Countries by Picture #6 | 0 | - | 4.15 | 35,921 |
| Geography by Picture - B | 0 | - | 4.42 | 55,427 |
| Geography by Picture - H | 0 | - | 4.49 | 58,059 |
| Geography by Picture - N | 0 | - | 4.45 | 42,057 |
| Geography by Picture - R | 0 | - | 4.55 | 40,885 |
| Geography by Picture - T | 0 | - | 4.54 | 57,687 |
| Merged Company Logos #3 | 0 | - | 4.52 | 63,987 |
| Flags of Oceania | 0 | - | 5.00 | 255,397 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,937 |
| Flags of WW1 | 0 | - | 4.60 | 37,967 |
| Flag Vocabulary Mega-Challenge | 0 | - | 4.34 | 26,926 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,485 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,110 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,459 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,858 |
| Boundary Waters | 0 | - | 4.92 | 88,062 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,829 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,322 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,347 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,863 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 69,772 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,942,582 |
| Landlocked Countries | 0 | - | 4.99 | 413,862 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 553,676 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,102 |
| Satellite Images #1 | 0 | - | 4.46 | 129,034 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,003 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,664 |
| Satellite Images Quiz #5 | 0 | - | 4.48 | 49,659 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,815 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,395 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,743 |
| World Capitals Quiz | 0 | - | 5.00 | 5,033,377 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,719,262 |
| Merged Countries #2 | 0 | - | 4.96 | 98,504 |
| Merged Countries #6 | 0 | - | 4.91 | 72,737 |
| Merged Countries #7 | 0 | - | 4.92 | 81,989 |
| Geography by Picture - A | 0 | - | 4.39 | 60,062 |
| Geography by Picture - D | 0 | - | 4.15 | 45,504 |
| Geography by Picture - F | 0 | - | 4.31 | 50,838 |
| Geography by Picture - G | 0 | - | 4.38 | 47,800 |
| Geography by Picture - J | 0 | - | 4.16 | 38,343 |
| Geography by Picture - K | 0 | - | 4.28 | 33,024 |
| Geography by Picture - C | 0 | - | 4.31 | 56,920 |
| Geography by Picture - L | 0 | - | 4.37 | 58,772 |
| Geography by Picture - M | 0 | - | 4.14 | 40,352 |
| Geography by Picture - P | 0 | - | 4.24 | 42,307 |
| Geography by Picture - S | 0 | - | 4.38 | 46,920 |
| Merged Company Logos #4 | 0 | - | 4.39 | 52,054 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,192 |
| Islands by Picture | 0 | - | 4.29 | 105,944 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,187 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,036 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,687 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,081 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,402 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 123,025 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,571,733 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,197 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,993 |
| Island Countries | 0 | - | 4.99 | 707,725 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,693 |
| Himalayan Countries | 0 | - | 4.95 | 135,455 |
| Andean Countries | 0 | - | 4.94 | 82,863 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,258 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,266 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,949 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,637 |
| Danube Countries | 0 | - | 4.97 | 71,101 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,793 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,559 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,531 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,454 |
| European Landlocked Countries | 0 | - | 4.99 | 145,782 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,246 |
| Countries with the Most Species | 0 | - | 4.99 | 95,256 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,391 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,205 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,376 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,971 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,592 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,968 |
| Countries in the Alps | 0 | - | 4.86 | 116,865 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,589 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,296 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,027 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,443 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,201 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,028 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,603 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,780 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,405 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,088 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,202 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,055 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,467 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,776 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,771 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,125 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,669 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,270 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,802 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,444 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,755 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,618 |
| Largest Countries By Category | 0 | - | 4.97 | 156,803 |
