| World Capitals Quiz | 5,078,951 | 0 | - |
| Elements of the Periodic Table | 2,246,026 | 0 | - |
| Countries of Europe - One Minute Sprint | 1,329,709 | 0 | - |
| 40 Historical People that Everyone Should Know | 1,014,313 | 0 | - |
| Countries that Start with T | 1,010,610 | 0 | - |
| Countries of the World - One Minute Sprint | 977,709 | 0 | - |
| Fruits by Picture | 807,645 | 0 | - |
| Original 151 Pokémon | 790,652 | 0 | - |
| Top World Languages | 823,266 | 0 | - |
| 12 x 12 Multiplication Table in 2 Minutes | 803,011 | 0 | - |
| Fast Typing Test - 100 WPM Challenge | 713,535 | 0 | - |
| Mythical Creatures Quiz #1 | 708,038 | 0 | - |
| Countries by Languages in 90 Seconds | 721,793 | 0 | - |
| Disney Animated Characters | 601,684 | 0 | - |
| NHL Hockey Teams Quiz | 652,907 | 0 | - |
| Oceania Map Quiz | 643,141 | 0 | - |
| All 1M Cities by Proximity | 578,833 | 0 | - |
| Ultimate Harry Potter Name Game | 493,571 | 0 | - |
| Olympian Gods Quiz | 501,380 | 0 | - |
| Countries, U.S. States, and Capitals by First Two Letters | 488,012 | 0 | - |
| Top Five Countries By Category #1 | 451,220 | 0 | - |
| Every Country Shape | 466,549 | 0 | - |
| Asian Countries by Borders in 30 Seconds | 415,554 | 0 | - |
| Basic Harry Potter Quiz | 378,961 | 0 | - |
| Landmarks Picture Quiz #1 | 394,755 | 0 | - |
| Save Humanity by Guessing Countries | 574,621 | 0 | - |
| Countries of Africa by Borders in 30 Seconds | 355,978 | 0 | - |
| Europe Cities Map Quiz | 364,743 | 0 | - |
| Official Languages of the World | 418,681 | 0 | - |
| Foods by Country of Origin #1 | 336,882 | 0 | - |
| 100 Biggest Cities in Europe with a Map | 346,234 | 0 | - |
| Name that Historical Figure #1 | 337,859 | 0 | - |
| Countries of Africa - One Minute Sprint | 322,514 | 0 | - |
| World Capitals by Proximity | 331,766 | 0 | - |
| Marvel Cinematic Universe - All Movies | 339,801 | 0 | - |
| Groups of Things - Harry Potter | 281,900 | 0 | - |
| Countries by Borders in 90 Seconds with an Empty Map | 279,595 | 0 | - |
| Countries with the Most Speakers of These Languages | 296,173 | 0 | - |
| Countries of Asia - One Minute Sprint | 275,601 | 0 | - |
| World Currency Quiz | 303,650 | 0 | - |
| Top 50 Countries by Population - In Order | 330,973 | 0 | - |
| World Capitals by Map | 287,038 | 0 | - |
| Groups of Five #1 | 245,032 | 0 | - |
| Groups of Four #1 | 248,499 | 0 | - |
| Multiple Choice General Knowledge #1 | 254,907 | 0 | - |
| World Capitals by First Two Letters in 90 Seconds | 246,505 | 0 | - |
| Countries with Five Letters | 282,091 | 0 | - |
| Capitals of Oceania Quiz | 270,379 | 0 | - |
| Geography General Knowledge #1 | 263,750 | 0 | - |
| Biggest Cities in the United States | 979,704 | 0 | - |
| Win the U.S. Presidential Election | 628,807 | 0 | - |
| UK Cities Map Quiz | 464,866 | 0 | - |
| North America Map Quiz | 248,923 | 0 | - |
| Europe Flags Map Quiz | 158,552 | 0 | - |
| Multiple Choice Geography #1 | 136,452 | 0 | - |
| Geographic Groups of Two #1 | 237,123 | 0 | - |
| Commonwealth of Nations Countries | 237,551 | 0 | - |
| Easy Geography True or False #2 | 61,592 | 0 | - |
| Things with Geographic Names #4 | 33,557 | 0 | - |
| Geography by Letter - N | 127,400 | 0 | - |
| Geographic Groups of Seven #1 | 141,107 | 0 | - |
| Asian Geography by Letter - N | 50,271 | 0 | - |
| Countries with Nuclear Weapons | 273,863 | 0 | - |
| Lonely Planet Top 200 Cities | 221,040 | 0 | - |
| Category Elimination - Countries #2 | 236,374 | 0 | - |
| Every European Flag - Sudden Death | 388,319 | 0 | - |
| Countries by Capitals and Borders in 90 Seconds | 226,753 | 0 | - |
| Five Richest Countries by Continent | 207,413 | 0 | - |
| One Capital by Letter by Continent | 17,327 | 0 | - |
| The Only Two Capitals... | 36,071 | 0 | - |
| Progressively Harder Geography on A Map | 120,766 | 0 | - |
| World Capitals in the Answer | 77,184 | 0 | - |
| Former Country Flag-Shape Picture Quiz | 89,736 | 0 | - |
| Geographic Groups of Two #4 | 78,368 | 0 | - |
| Countries by Picture #6 | 37,053 | 0 | - |
| Geography by Picture - L | 59,012 | 0 | - |
| Geography by Picture - I | 39,453 | 0 | - |
| Every European Country Shape | 201,997 | 0 | - |
| Europe Geography Quiz #2 | 71,980 | 0 | - |
| European Cities A-Z by Clue #1 | 78,992 | 0 | - |
| Europe Capitals - One Minute Sprint | 201,352 | 0 | - |
| Five Letter Geography #2 | 88,627 | 0 | - |
| City to Country Quiz #3 | 118,898 | 0 | - |
| Monarchies of the World | 168,986 | 0 | - |
| Capital Cities by Cartoon Riddles | 87,488 | 0 | - |
| 15 Largest Cities in Asia With a Map | 136,962 | 0 | - |
| Things that are Red by Picture | 14,306 | 0 | - |
| British Citizenship Test | 64,904 | 0 | - |
| Greek Mythology General Knowledge #1 | 112,017 | 0 | - |
| Aquatic Mammals by Picture | 45,718 | 0 | - |
| Fish Knowledge | 25,662 | 0 | - |
| Religion General Knowledge #5 | 46,266 | 0 | - |
| Name a Valid Word #1 | 119,899 | 0 | - |
| Geography by Letter - O | 129,953 | 0 | - |
| Most Populated Countries Bordering the Pacific Ocean | 95,661 | 0 | - |
| Countries of Europe before World War II with a Map | 53,509 | 0 | - |
| First Five Countries Alphabetically by Continent | 225,317 | 0 | - |
| Words for Leaders | 257,557 | 0 | - |
| Ancient City to Country | 108,087 | 0 | - |
| Recently Independent Countries | 159,372 | 0 | - |
| Name the 7 Dwarfs | 364,085 | 0 | - |
| Find The Mystery Country Using Color Clues #1 | 234,174 | 0 | - |
| Name a Valid Country #4 | 255,895 | 0 | - |
| Countries in World War I | 228,312 | 0 | - |
| Largest Countries with No Borders | 221,556 | 0 | - |
| Category Elimination - Countries #3 | 225,327 | 0 | - |
| Guess the Countries Being Drawn | 243,136 | 0 | - |
| Catholic Countries | 215,065 | 0 | - |
| Countries Closest to the U. S. | 209,639 | 0 | - |
| Airport Codes Quiz #1 | 215,246 | 0 | - |
| Countries with the Most Forest | 147,621 | 0 | - |
| Countries by Sports in 60 Seconds | 145,719 | 0 | - |
| All Modern-Day Countries Ever Controlled by Austria | 37,832 | 0 | - |
| Top 10 Most Famous Island Countries | 108,603 | 0 | - |
| Countries Closest to Afro-Eurasia | 25,706 | 0 | - |
| Top 10 Asian Countries by Coastline | 96,498 | 0 | - |
| Countries with the Longest Road Networks Quiz | 41,468 | 0 | - |
| Fertile Crescent Countries | 23,115 | 0 | - |
| Geography Quiz for Dummies | 108,797 | 0 | - |
| 10 Biggest Countries by Area - Whammies | 40,450 | 0 | - |
| Countries that Visit the UK the Most | 75,241 | 0 | - |
| Countries of Europe in 1360 with a Map | 57,016 | 0 | - |
| Countries of the World in 1789 with a Map | 66,653 | 0 | - |
| All 50k+ Cities in Europe with a Map | 34,979 | 0 | - |
| ALL First-Level Subdivisions of the World With a Map | 147,391 | 0 | - |
| Seas of the World | 157,177 | 0 | - |
| Countries, Capitals, Currencies and Official Languages | 106,893 | 0 | - |
| All Countries by Area : Four at a Time | 118,718 | 0 | - |
| World Countries - Blind Typing | 107,889 | 0 | - |
| Countries of the World in 1945 with a Map | 151,113 | 0 | - |
| Countries and Capitals of the World With a Map | 67,523 | 0 | - |
| Flag Emblems Scavenger Hunt | 67,386 | 0 | - |
| Countries by Road Network Shape | 67,124 | 0 | - |
| Count to 10 in Europe | 165,983 | 0 | - |
| Countries by Official Language | 195,100 | 0 | - |
| German Loan Words | 135,839 | 0 | - |
| 15 Most Populous Countries that Speak a Romance Language | 127,792 | 0 | - |
| Countries With the Most German Speakers | 97,040 | 0 | - |
| Top Romance Languages | 44,902 | 0 | - |
| Countries With the Most Russian Speakers | 101,208 | 0 | - |
| Countries With the Most English Speakers | 131,952 | 0 | - |
| 15 Most Populous Countries that Speak a Germanic Language | 82,610 | 0 | - |
| What's That Dutch Compound Word? | 28,362 | 0 | - |
| Top European Languages on a Map | 132,204 | 0 | - |
| General Knowledge for Dummies | 28,061 | 0 | - |
| Countries by Initial Letter and Continent #3 | 48,810 | 0 | - |
| European History for Dummies | 90,000 | 0 | - |
| Countries that Beat Saudi Arabia | 46,415 | 0 | - |
| Name a Valid Country #9 | 46,227 | 0 | - |
| Regions of Countries #2 | 123,965 | 0 | - |
| Countries by Milk Production | 44,029 | 0 | - |
| English Idioms #1 | 145,945 | 0 | - |
| Mythical Creatures #2 | 111,870 | 0 | - |
| Merged Company Logos #2 | 77,676 | 0 | - |
| 16 Questions that Prove that Physics Makes No Sense | 20,837 | 0 | - |
| Countries with the Largest Exclusive Economic Zone | 73,171 | 0 | - |
| Countries With the Most ISIS Fighters | 39,649 | 0 | - |
| Click to Translate - Latin | 44,082 | 0 | - |
| Colors in Europe Quiz | 51,449 | 0 | - |
| Countries That Speak Portuguese | 100,085 | 0 | - |
| Countries of the World in All Featured Languages | 35,380 | 0 | - |
| English Words of Arabic Origin | 49,776 | 0 | - |
| European Greetings | 61,255 | 0 | - |
| Identify the Language on the World Map #1 | 59,815 | 0 | - |
| English Words of Russian Origin | 50,955 | 0 | - |
| 100 Books You Can't Do Without | 64,227 | 0 | - |
| Word Scramble - Musical Instruments | 59,747 | 0 | - |
| Animals that Start with T | 91,513 | 0 | - |
| Animals that Start with R | 87,454 | 0 | - |
| Animals that Start with P | 86,198 | 0 | - |
| Animals that Start with M | 84,082 | 0 | - |
| Animals that Start with L | 102,175 | 0 | - |
| Animals that Start with K | 66,594 | 0 | - |
| Marvel Superheroes | 297,766 | 0 | - |
| Regions of Spain Quiz | 114,152 | 0 | - |
| Harry Potter Patronus Charms | 31,196 | 0 | - |
| Title in the Lyrics - Disney Songs | 129,629 | 0 | - |
| Friends Theme Song Lyrics | 143,114 | 0 | - |
| Piano Man Lyrics Quiz | 82,909 | 0 | - |
| "A Whole New World" Lyrics | 67,600 | 0 | - |
| Take Me Home, Country Roads Lyrics | 68,121 | 0 | - |
| O Vocabulary Words Quiz #1 | 252,161 | 0 | - |
| Most Common English Verbs - Extreme | 157,426 | 0 | - |
| Things Named For People #1 | 157,279 | 0 | - |
| Country Name Etymologies #1 | 158,923 | 0 | - |
| C Vocabulary Words #1 | 126,303 | 0 | - |
| D Vocabulary Words Quiz #1 | 97,865 | 0 | - |
| Capital Cities - Sudden Death | 278,503 | 0 | - |
| Easy Geography True or False #3 | 28,731 | 0 | - |
| Click the Countries on a Borderless World Map #1 | 116,066 | 0 | - |
| Click the Countries on a Borderless World Map #2 | 82,378 | 0 | - |
