| World Capitals Quiz | 5,042,912 | 0 | - |
| Elements of the Periodic Table | 2,226,340 | 0 | - |
| Countries of Europe - One Minute Sprint | 1,321,960 | 0 | - |
| 40 Historical People that Everyone Should Know | 1,011,733 | 0 | - |
| Countries that Start with T | 1,005,635 | 0 | - |
| Countries of the World - One Minute Sprint | 957,700 | 0 | - |
| Fruits by Picture | 805,366 | 0 | - |
| Original 151 Pokémon | 786,450 | 0 | - |
| Top World Languages | 815,498 | 0 | - |
| 12 x 12 Multiplication Table in 2 Minutes | 798,938 | 0 | - |
| Fast Typing Test - 100 WPM Challenge | 709,854 | 0 | - |
| Mythical Creatures Quiz #1 | 705,163 | 0 | - |
| Countries by Languages in 90 Seconds | 713,952 | 0 | - |
| Disney Animated Characters | 599,860 | 0 | - |
| NHL Hockey Teams Quiz | 646,217 | 0 | - |
| Oceania Map Quiz | 637,135 | 0 | - |
| All 1M Cities by Proximity | 574,608 | 0 | - |
| Ultimate Harry Potter Name Game | 491,878 | 0 | - |
| Olympian Gods Quiz | 497,563 | 0 | - |
| Countries, U.S. States, and Capitals by First Two Letters | 485,022 | 0 | - |
| Top Five Countries By Category #1 | 447,476 | 0 | - |
| Every Country Shape | 460,588 | 0 | - |
| Asian Countries by Borders in 30 Seconds | 413,433 | 0 | - |
| Basic Harry Potter Quiz | 377,577 | 0 | - |
| Landmarks Picture Quiz #1 | 393,398 | 0 | - |
| Save Humanity by Guessing Countries | 557,993 | 0 | - |
| Countries of Africa by Borders in 30 Seconds | 354,992 | 0 | - |
| Europe Cities Map Quiz | 362,857 | 0 | - |
| Official Languages of the World | 413,129 | 0 | - |
| Foods by Country of Origin #1 | 335,457 | 0 | - |
| 100 Biggest Cities in Europe with a Map | 342,942 | 0 | - |
| Name that Historical Figure #1 | 336,108 | 0 | - |
| Countries of Africa - One Minute Sprint | 319,840 | 0 | - |
| World Capitals by Proximity | 329,169 | 0 | - |
| Marvel Cinematic Universe - All Movies | 334,353 | 0 | - |
| Groups of Things - Harry Potter | 280,457 | 0 | - |
| Countries by Borders in 90 Seconds with an Empty Map | 277,865 | 0 | - |
| Countries with the Most Speakers of These Languages | 293,730 | 0 | - |
| Countries of Asia - One Minute Sprint | 273,460 | 0 | - |
| World Currency Quiz | 299,647 | 0 | - |
| Top 50 Countries by Population - In Order | 325,848 | 0 | - |
| World Capitals by Map | 284,276 | 0 | - |
| Groups of Five #1 | 244,535 | 0 | - |
| Groups of Four #1 | 247,855 | 0 | - |
| Multiple Choice General Knowledge #1 | 253,693 | 0 | - |
| World Capitals by First Two Letters in 90 Seconds | 246,077 | 0 | - |
| Countries with Five Letters Quiz | 259,049 | 0 | - |
| Capitals of Oceania Quiz | 267,726 | 0 | - |
| Geography General Knowledge #1 | 262,017 | 0 | - |
| Biggest Cities in the United States | 969,715 | 0 | - |
| Win the U.S. Presidential Election | 620,747 | 0 | - |
| UK Cities Map Quiz | 462,853 | 0 | - |
| North America Map Quiz | 245,802 | 0 | - |
| Europe Flags Map Quiz | 157,066 | 0 | - |
| Multiple Choice Geography #1 | 135,888 | 0 | - |
| Geographic Groups of Two #1 | 236,110 | 0 | - |
| Commonwealth of Nations Countries | 236,663 | 0 | - |
| Easy Geography True or False #2 | 61,039 | 0 | - |
| Things with Geographic Names #4 | 33,522 | 0 | - |
| Geography by Letter - N | 126,464 | 0 | - |
| Geographic Groups of Seven #1 | 140,714 | 0 | - |
| Asian Geography by Letter - N | 50,065 | 0 | - |
| Countries with Nuclear Weapons | 269,508 | 0 | - |
| Lonely Planet Top 200 Cities | 220,432 | 0 | - |
| Category Elimination - Countries #2 | 234,180 | 0 | - |
| Every European Flag - Sudden Death | 376,542 | 0 | - |
| Countries by Capitals and Borders in 90 Seconds | 225,595 | 0 | - |
| Five Richest Countries by Continent | 206,606 | 0 | - |
| One Capital by Letter by Continent | 17,078 | 0 | - |
| The Only Two Capitals... | 35,790 | 0 | - |
| Progressively Harder Geography on A Map | 119,236 | 0 | - |
| World Capitals in the Answer | 76,487 | 0 | - |
| Former Country Flag-Shape Picture Quiz | 88,744 | 0 | - |
| Geographic Groups of Two #4 | 77,973 | 0 | - |
| Countries by Picture #6 | 35,961 | 0 | - |
| Geography by Picture - L | 58,812 | 0 | - |
| Geography by Picture - I | 39,341 | 0 | - |
| Every European Country Shape | 200,584 | 0 | - |
| Europe Geography Quiz #2 | 71,706 | 0 | - |
| European Cities A-Z by Clue #1 | 78,154 | 0 | - |
| Europe Capitals - One Minute Sprint | 200,462 | 0 | - |
| Five Letter Geography #2 | 88,399 | 0 | - |
| City to Country Quiz #3 | 118,464 | 0 | - |
| Monarchies of the World | 167,097 | 0 | - |
| Capital Cities by Cartoon Riddles | 86,848 | 0 | - |
| 15 Largest Cities in Asia With a Map | 135,947 | 0 | - |
| Things that are Red by Picture | 14,214 | 0 | - |
| British Citizenship Test | 64,395 | 0 | - |
| Greek Mythology General Knowledge #1 | 110,926 | 0 | - |
| Aquatic Mammals by Picture | 45,357 | 0 | - |
| Fish Knowledge | 25,539 | 0 | - |
| Religion General Knowledge #5 | 46,027 | 0 | - |
| Name a Valid Word #1 | 119,202 | 0 | - |
| Geography by Letter - O | 129,203 | 0 | - |
| Most Populated Countries Bordering the Pacific Ocean | 95,265 | 0 | - |
| Countries of Europe before World War II with a Map | 52,574 | 0 | - |
| First Five Countries Alphabetically by Continent | 224,045 | 0 | - |
| Words for Leaders | 255,668 | 0 | - |
| Ancient City to Country | 107,730 | 0 | - |
| Recently Independent Countries | 158,211 | 0 | - |
| Name the 7 Dwarfs | 362,243 | 0 | - |
| Find The Mystery Country Using Color Clues #1 | 232,500 | 0 | - |
| Name a Valid Country #4 | 252,647 | 0 | - |
| Countries in World War I | 226,924 | 0 | - |
| Largest Countries with No Borders | 220,453 | 0 | - |
| Category Elimination - Countries #3 | 223,340 | 0 | - |
| Guess the Countries Being Drawn | 240,525 | 0 | - |
| Catholic Countries | 213,906 | 0 | - |
| Countries Closest to the U. S. | 208,207 | 0 | - |
| Airport Codes Quiz #1 | 213,640 | 0 | - |
| Countries with the Most Forest | 146,778 | 0 | - |
| Countries by Sports in 60 Seconds | 142,226 | 0 | - |
| All Modern-Day Countries Ever Controlled by Austria | 37,496 | 0 | - |
| Top 10 Most Famous Island Countries | 108,037 | 0 | - |
| Countries Closest to Afro-Eurasia | 25,397 | 0 | - |
| Top 10 Asian Countries by Coastline | 96,239 | 0 | - |
| Countries with the Longest Road Networks Quiz | 41,139 | 0 | - |
| Fertile Crescent Countries | 23,046 | 0 | - |
| Geography Quiz for Dummies | 108,045 | 0 | - |
| 10 Biggest Countries by Area - Whammies | 39,424 | 0 | - |
| Countries that Visit the UK the Most | 74,525 | 0 | - |
| Countries of Europe in 1360 with a Map | 56,241 | 0 | - |
| Countries of the World in 1789 with a Map | 65,596 | 0 | - |
| All 50k+ Cities in Europe with a Map | 34,096 | 0 | - |
| ALL First-Level Subdivisions of the World With a Map | 145,345 | 0 | - |
| Seas of the World | 155,003 | 0 | - |
| Countries, Capitals, Currencies and Official Languages | 105,598 | 0 | - |
| All Countries by Area : Four at a Time | 117,464 | 0 | - |
| World Countries - Blind Typing | 106,200 | 0 | - |
| Countries of the World in 1945 with a Map | 149,419 | 0 | - |
| Countries and Capitals of the World With a Map | 65,486 | 0 | - |
| Flag Emblems Scavenger Hunt | 66,664 | 0 | - |
| Countries by Road Network Shape | 66,453 | 0 | - |
| Count to 10 in Europe | 165,389 | 0 | - |
| Countries by Official Language | 193,189 | 0 | - |
| German Loan Words | 135,538 | 0 | - |
| 15 Most Populous Countries that Speak a Romance Language | 127,411 | 0 | - |
| Countries With the Most German Speakers | 94,972 | 0 | - |
| Top Romance Languages | 44,182 | 0 | - |
| Countries With the Most Russian Speakers | 99,118 | 0 | - |
| Countries With the Most English Speakers | 130,190 | 0 | - |
| 15 Most Populous Countries that Speak a Germanic Language | 82,380 | 0 | - |
| What's That Dutch Compound Word? | 28,084 | 0 | - |
| Top European Languages on a Map | 131,412 | 0 | - |
| General Knowledge for Dummies | 27,978 | 0 | - |
| Countries by Initial Letter and Continent #3 | 48,012 | 0 | - |
| European History for Dummies | 89,464 | 0 | - |
| Countries that Beat Saudi Arabia | 46,165 | 0 | - |
| Name a Valid Country #9 | 45,414 | 0 | - |
| Regions of Countries #2 | 123,402 | 0 | - |
| Countries by Milk Production | 43,715 | 0 | - |
| English Idioms #1 | 144,996 | 0 | - |
| Mythical Creatures #2 | 111,243 | 0 | - |
| Merged Company Logos #2 | 76,946 | 0 | - |
| 16 Questions that Prove that Physics Makes No Sense | 20,691 | 0 | - |
| Countries with the Largest Exclusive Economic Zone | 72,718 | 0 | - |
| Countries With the Most ISIS Fighters | 39,514 | 0 | - |
| Click to Translate - Latin | 43,401 | 0 | - |
| Colors in Europe Quiz | 51,236 | 0 | - |
| Countries That Speak Portuguese | 99,823 | 0 | - |
| Countries of the World in All Featured Languages | 34,720 | 0 | - |
| English Words of Arabic Origin | 49,642 | 0 | - |
| European Greetings | 61,057 | 0 | - |
| Identify the Language on the World Map #1 | 59,158 | 0 | - |
| English Words of Russian Origin | 50,851 | 0 | - |
| 100 Books You Can't Do Without | 63,778 | 0 | - |
| Word Scramble - Musical Instruments | 59,637 | 0 | - |
| Animals that Start with T | 91,201 | 0 | - |
| Animals that Start with R | 87,157 | 0 | - |
| Animals that Start with P | 85,874 | 0 | - |
| Animals that Start with M | 83,760 | 0 | - |
| Animals that Start with L | 101,625 | 0 | - |
| Animals that Start with K | 66,377 | 0 | - |
| Marvel Superheroes | 295,410 | 0 | - |
| Regions of Spain Quiz | 112,839 | 0 | - |
| Harry Potter Patronus Charms | 31,055 | 0 | - |
| Title in the Lyrics - Disney Songs | 129,212 | 0 | - |
| Friends Theme Song Lyrics | 142,524 | 0 | - |
| Piano Man Lyrics Quiz | 82,243 | 0 | - |
| "A Whole New World" Lyrics | 67,418 | 0 | - |
| Take Me Home, Country Roads Lyrics | 67,266 | 0 | - |
| O Vocabulary Words Quiz #1 | 251,732 | 0 | - |
| Most Common English Verbs - Extreme | 156,145 | 0 | - |
| Things Named For People #1 | 156,842 | 0 | - |
| Country Name Etymologies #1 | 158,312 | 0 | - |
| C Vocabulary Words #1 | 125,971 | 0 | - |
| D Vocabulary Words Quiz #1 | 97,663 | 0 | - |
| Capital Cities - Sudden Death | 270,880 | 0 | - |
| Easy Geography True or False #3 | 28,084 | 0 | - |
| Click the Countries on a Borderless World Map #1 | 110,384 | 0 | - |
| Click the Countries on a Borderless World Map #2 | 79,990 | 0 | - |
