| All Country Flags of the World | 0 | - | 5.00 | 3,602,782 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,526,466 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,087,457 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 729,702 |
| Flags with Crescents | 0 | - | 4.98 | 167,580 |
| Country Flag Trivia | 0 | - | 4.81 | 55,942 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 102,430 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,461 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 85,922 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,471 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,386 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,045 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 142,764 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 114,230 |
| Flags with the Most Stars | 0 | - | 4.91 | 134,914 |
| Country Flags with the Southern Cross | 0 | - | 4.83 | 61,376 |
| Flags that are Red & White Only | 0 | - | 4.97 | 161,310 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 144,662 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 74,222 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 46,630 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 67,645 |
| Country Flags with the Most Red | 0 | - | 4.98 | 119,391 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 91,746 |
| Country Flags with the Most Green | 0 | - | 4.96 | 98,811 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 98,584 |
| Country Flags with the Most Yellow | 0 | - | 4.94 | 98,302 |
| Country Flags with the Most Black | 0 | - | 4.95 | 96,828 |
| Country Flags with the Most Stripes - Picture Quiz | 0 | - | 4.95 | 67,271 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,677 |
| Country Flags Slideshow | 0 | - | 4.91 | 46,762 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 98,400 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 79,703 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 64,758 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 43,980 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,043 |
| Flags of North and South America | 0 | - | 4.99 | 367,334 |
| Flags to Languages | 0 | - | 4.95 | 172,498 |
| Former Flags | 0 | - | 4.97 | 106,707 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,625 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,154 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 43,792 |
| Countries by Partial Flag Images #7 | 0 | - | 4.89 | 30,588 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 83,277 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,707 |
| 20 Random Country Flags | 0 | - | 4.99 | 604,506 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 112,071 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 82,631 |
| Flags of the Mediterranean | 0 | - | 4.94 | 147,535 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 143,478 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 278,389 |
| Flag Maths | 0 | - | 4.78 | 57,676 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,376 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 81,968 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,451 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,362 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,279 |
| World Coats of Arms | 0 | - | 4.99 | 63,870 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 141,400 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 52,803 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 169,914 |
| Similar Flags #1 | 0 | - | 4.74 | 129,111 |
| Similar Flags #2 | 0 | - | 4.74 | 136,377 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.64 | 37,474 |
| Languages by Combined Flags | 0 | - | 4.53 | 99,153 |
| Emoji Flags | 0 | - | 4.35 | 43,817 |
| Countries by Road Signs | 0 | - | 4.98 | 53,103 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,038 |
| Islands by Shape #2 | 0 | - | 4.88 | 58,993 |
| Select the World Flags | 0 | - | 4.27 | 37,406 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 75,304 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,567 |
| Name a Valid Country Flag | 0 | - | 4.67 | 74,819 |
| Countries by Satellite Image #3 | 0 | - | 4.63 | 71,046 |
| Countries by Satellite Image #2 | 0 | - | 4.80 | 69,685 |
| Countries by Satellite Image #4 | 0 | - | 4.61 | 66,828 |
| Countries by Partial Satellite Image #2 | 0 | - | 4.55 | 46,684 |
| Countries by Partial Satellite Image #1 | 0 | - | 4.75 | 44,228 |
| Countries by Picture #1 | 0 | - | 4.53 | 98,380 |
| Countries by Picture #3 | 0 | - | 4.51 | 58,985 |
| Guess the Country by a Picture Hint | 0 | - | 4.42 | 47,392 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,226,913 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,660 |
| Pixelated World Map | 0 | - | 5.00 | 142,449 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 60,682 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,469 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 76,392 |
| Image to Country - Multiple Choice #2 | 0 | - | 4.61 | 43,273 |
| Satellite Images - Europe | 0 | - | 4.47 | 103,704 |
| European Cities by Picture #2 | 0 | - | 4.45 | 37,934 |
| Cities by Satellite #1 | 0 | - | 4.38 | 80,284 |
| Cities by Satellite #2 | 0 | - | 4.49 | 24,914 |
| Countries by Picture #4 | 0 | - | 4.15 | 45,043 |
| Countries by Picture #2 | 0 | - | 4.37 | 69,571 |
| Countries by Picture #5 | 0 | - | 4.25 | 43,154 |
| Countries by Picture #6 | 0 | - | 4.15 | 35,919 |
| Geography by Picture - B | 0 | - | 4.42 | 55,419 |
| Geography by Picture - H | 0 | - | 4.49 | 58,051 |
| Geography by Picture - N | 0 | - | 4.45 | 42,050 |
| Geography by Picture - R | 0 | - | 4.55 | 40,879 |
| Geography by Picture - T | 0 | - | 4.54 | 57,678 |
| Merged Company Logos #3 | 0 | - | 4.52 | 63,964 |
| Flags of Oceania | 0 | - | 5.00 | 255,245 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,877 |
| Flags of WW1 | 0 | - | 4.60 | 37,947 |
| Flag Vocabulary Mega-Challenge | 0 | - | 4.34 | 26,922 |
| Name the Pixelated Landmark | 0 | - | 4.84 | 62,452 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,079 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,421 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,830 |
| Boundary Waters | 0 | - | 4.92 | 88,047 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,818 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,294 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,309 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,849 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 69,740 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,924,260 |
| Landlocked Countries | 0 | - | 4.99 | 413,665 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 553,111 |
| Image to Country - Multiple Choice #1 | 0 | - | 4.70 | 51,081 |
| Satellite Images #1 | 0 | - | 4.46 | 129,013 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 108,990 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,654 |
| Satellite Images Quiz #5 | 0 | - | 4.48 | 49,650 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,809 |
| Cities by Picture #1 | 0 | - | 4.73 | 85,370 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,739 |
| World Capitals Quiz | 0 | - | 5.00 | 5,031,950 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,717,278 |
| Merged Countries #2 | 0 | - | 4.96 | 98,485 |
| Merged Countries #6 | 0 | - | 4.91 | 72,718 |
| Merged Countries #7 | 0 | - | 4.92 | 81,967 |
| Geography by Picture - A | 0 | - | 4.39 | 60,055 |
| Geography by Picture - D | 0 | - | 4.15 | 45,495 |
| Geography by Picture - F | 0 | - | 4.31 | 50,830 |
| Geography by Picture - G | 0 | - | 4.38 | 47,792 |
| Geography by Picture - J | 0 | - | 4.16 | 38,336 |
| Geography by Picture - K | 0 | - | 4.28 | 33,015 |
| Geography by Picture - C | 0 | - | 4.31 | 56,911 |
| Geography by Picture - L | 0 | - | 4.37 | 58,764 |
| Geography by Picture - M | 0 | - | 4.14 | 40,347 |
| Geography by Picture - P | 0 | - | 4.24 | 42,300 |
| Geography by Picture - S | 0 | - | 4.38 | 46,911 |
| Merged Company Logos #4 | 0 | - | 4.39 | 52,036 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,190 |
| Islands by Picture | 0 | - | 4.29 | 105,907 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,162 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,007 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,636 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,006 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,030 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 122,989 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,571,245 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,135 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,874 |
| Island Countries | 0 | - | 4.99 | 707,644 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,610 |
| Himalayan Countries | 0 | - | 4.95 | 135,378 |
| Andean Countries | 0 | - | 4.94 | 82,831 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,223 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,222 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,909 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,615 |
| Danube Countries | 0 | - | 4.97 | 71,084 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,769 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,540 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,495 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,410 |
| European Landlocked Countries | 0 | - | 4.99 | 145,759 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,218 |
| Countries with the Most Species | 0 | - | 4.99 | 95,242 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,353 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,200 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,371 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,959 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,579 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,953 |
| Countries in the Alps | 0 | - | 4.86 | 116,828 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,572 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,264 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,015 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,426 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,168 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,006 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,583 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,760 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,309 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,064 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,197 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,045 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,454 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,753 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,756 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,075 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,649 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,255 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,774 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,325 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,682 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,605 |
| Largest Countries By Category | 0 | - | 4.97 | 156,766 |
