| Series | # | | Rating | Takes |
|---|
| Quizzes mit Karten | 39 | 36 | 4.79 | 253,669 |
| Länder, die mit … beginnen | 20 | 14 | 4.80 | 187,816 |
| Deutschland | 35 | 31 | 4.65 | 186,181 |
| Länder | 48 | 47 | 4.70 | 160,183 |
| Gassu's SVG Quizzes | 38 | 7 | 4.61 | 149,322 |
| Quizz français de Gassu | 14 | 10 | 4.43 | 129,570 |
| The Only ... | 6 | 3 | 4.52 | 94,885 |
| Geschichts-Quizzes | 49 | 47 | 4.46 | 89,633 |
| Which City in ... | 3 | 3 | 4.25 | 71,072 |
| Antworten sind europäische Länder | 17 | 16 | 4.76 | 69,929 |
| Countries by Picture | 13 | 6 | 4.35 | 67,566 |
| Fußball-Quizzes | 18 | 13 | 4.73 | 64,512 |
| United States Politics | 14 | 1 | 4.58 | 62,262 |
| Geographie nach Buchstabe | 25 | 25 | 4.41 | 62,233 |
| Name a Valid Answer | 4 | 3 | 4.40 | 61,596 |
| Politik-Quizzes | 15 | 13 | 4.58 | 53,620 |
| die deutsche Sprache | 15 | 11 | 4.40 | 52,310 |
| Bilder nach Buchstabe | 25 | 25 | 4.00 | 49,976 |
| Antworten sind Städte | 16 | 14 | 4.33 | 47,892 |
| Die größten Städte | 15 | 13 | 4.43 | 46,978 |
| Flaggen-Quizzes | 11 | 11 | 4.73 | 44,746 |
| Gewässer-Quizzes (+ Inseln) | 15 | 15 | 4.55 | 43,488 |
| 5 pro Kontinent Quizzes | 6 | 6 | 4.66 | 40,583 |
| Wikipedia Quizzes | 5 | 2 | 4.37 | 38,982 |
| Sprachen | 13 | 12 | 4.63 | 36,221 |
| Bild-Quizzes | 23 | 20 | 4.53 | 36,124 |
| Geschichte nach Buchstabe | 25 | 25 | 4.39 | 34,787 |
| Allerlei | Sonstiges | 13 | 13 | 4.58 | 32,863 |
| Religion | Mythologie | 12 | 12 | 4.57 | 29,433 |
| Antiquity by Centuries | 8 | 5 | 4.49 | 25,435 |
| Länder / Städte mit Hinweisen | 14 | 13 | 4.67 | 24,678 |
| Gassu's Flag Quizzes | 3 | 1 | 4.24 | 22,878 |
| A-Z Quizzes | 15 | 1 | 4.29 | 22,729 |
| United States Cities | 33 | 1 | 4.44 | 21,534 |
| Allgemeinwissen der Geschichte | 12 | 12 | 4.32 | 21,307 |
| Regionen, Provinzen etc. | 11 | 10 | 4.68 | 21,294 |
| Sport-Quizzes | 9 | 8 | 4.52 | 20,872 |
| Zusammengefügt! | 6 | 6 | 4.75 | 19,702 |
| Pruebas de Gassu en español | 7 | 7 | 4.33 | 18,413 |
| Meistbesuchte Länder von ... | 8 | 7 | 4.84 | 17,388 |
| Gassu's Sports Quizzes | 29 | 1 | 4.07 | 15,923 |
| Österreich | 6 | 6 | 4.83 | 15,591 |
| Länder Trivia | 14 | 14 | 4.46 | 15,467 |
| Tier-Quizzes | 7 | 6 | 4.04 | 14,714 |
| Mathematik-Quizzes | 2 | 2 | 4.57 | 14,120 |
| Geographie A-Z | 7 | 7 | 4.52 | 13,918 |
| Tourismus-Quizzes | 4 | 4 | 4.59 | 13,537 |
| United States Geography | 22 | 1 | 4.19 | 12,931 |
| Von Nord bis Süd | 4 | 4 | 4.63 | 12,552 |
| Achtung Abflug! | 4 | 3 | 4.78 | 11,342 |
| Schweiz | Suisse | Svizzera | Svizra | 6 | 6 | 4.68 | 10,265 |
| Antworten sind asiatische Länder | 4 | 4 | 4.53 | 9,159 |
| California | 5 | 1 | 4.44 | 8,191 |
| Wahrzeichen von Ländern | 4 | 4 | 4.78 | 7,935 |
| Personen nach Land | 5 | 5 | 4.49 | 7,930 |
| Gruppen von Dingen | 4 | 2 | 4.56 | 7,533 |
| Monarchie | Royals | 3 | 2 | 4.34 | 6,924 |
| City Quizzes | 51 | 0 | 4.40 | 6,419 |
| die 2010er | 6 | 4 | 4.36 | 5,761 |
| It's All About Countries | 38 | 0 | 4.48 | 5,635 |
| Elemente (Chemie) | 2 | 2 | 4.81 | 5,591 |
| Poland | Polska | 2 | 1 | 4.79 | 5,560 |
| 5 Cities by Continent by Letter | 26 | 0 | 3.69 | 5,396 |
| Geographie nach Anzahl Buchstaben | 2 | 2 | 4.77 | 4,911 |
| Hauptstädte - Karten-Quiz | 6 | 6 | 4.78 | 4,259 |
| Biggest Cities in EU by Letter | 26 | 0 | - | 3,566 |
| Gassu‘s Geographic Groups | 4 | 0 | - | 3,052 |
| Misc | 26 | 0 | - | 2,894 |
| Religion | 5 | 0 | 3.10 | 2,699 |
| Ereignisse nach Monat | 5 | 4 | 4.20 | 2,647 |
| Groups of Things | 6 | 0 | - | 2,345 |
| Largest European Cities by Letter | 23 | 0 | - | 2,311 |
| Switzerland | 18 | 0 | - | 2,200 |
| Historical Quizzes | 18 | 0 | 4.17 | 2,172 |
| World's 50 Largest Cities | 6 | 0 | 4.25 | 1,755 |
| Städte-Trivia | 6 | 5 | 4.50 | 1,739 |
| World Politics | 14 | 0 | 4.80 | 1,703 |
| Transportation | 11 | 0 | - | 1,678 |
| Answers are U.S. States | 11 | 0 | 4.33 | 1,516 |
| italiano | 2 | 1 | 4.63 | 1,505 |
| Five Biggest Cities by Region | 6 | 0 | 3.60 | 1,486 |
| Donald J. Trump | 5 | 0 | - | 1,410 |
| Language Quizzes | 12 | 0 | 4.75 | 1,310 |
| Islands! | 17 | 0 | 3.83 | 1,221 |
| Auckland Quizzes | 6 | 0 | - | 1,219 |
| Germany | 9 | 0 | 4.40 | 1,174 |
| Decoder Quizzes | 7 | 0 | - | 1,167 |
| the Britons and their Commonwealth | 4 | 0 | 4.89 | 1,155 |
| 100 Questions about … | 6 | 0 | - | 1,102 |
| US State General Knowledge | 11 | 0 | - | 1,084 |
| Italy | 5 | 0 | - | 986 |
| Oceania Quizzes | 5 | 0 | 4.71 | 782 |
| Countries by a Single Word | 6 | 0 | - | 761 |
| France | 8 | 0 | - | 733 |
| Gassu Quizzes | 8 | 0 | 4.60 | 724 |
| Physical Geography by Picture | 6 | 0 | - | 652 |
| Spain | España | 7 | 0 | - | 631 |
| New Zealand Quizzes | 15 | 0 | - | 561 |
| JetPunk Quizzes | 6 | 0 | - | 518 |
| Gassu's Tile Quizzes | 3 | 0 | - | 451 |
| Stoopid Quizzes | 2 | 0 | 4.43 | 444 |
| Bundesliga | 3 | 0 | - | 436 |
| Interesting Facts | 3 | 0 | - | 416 |
| Cities as a Percent of the Continent | 5 | 0 | - | 392 |
| Europe's Largest [...]-Letter Cities | 3 | 0 | - | 362 |
| The 30 Greatest … | 8 | 0 | - | 356 |
| Biggest European Cities by Letter | 6 | 0 | - | 316 |
| Gassu's City Trivia | 2 | 0 | - | 295 |
| Biggest Cities in the Americas by Letter | 4 | 0 | - | 290 |
| Most Guessed Things | 3 | 0 | - | 286 |
| Biggest Cities in the NATO by Letter | 7 | 0 | - | 282 |
| The Tesla Series | 4 | 0 | - | 267 |
| Country Details | 4 | 0 | - | 262 |
| Top 50 Largest European Cities | 1 | 0 | - | 228 |
| the Nordics! | 2 | 0 | - | 175 |
| The Pacific Ocean by Letter | 3 | 0 | - | 169 |
| Analogies | 2 | 0 | - | 154 |
| Animals | 2 | 0 | - | 141 |
| Early History | 3 | 0 | - | 140 |
| Gassu's Discord Quizzes | 4 | 0 | - | 139 |
| 21st Century in ... | 4 | 0 | - | 99 |
| Random Tourist Attractions | 2 | 0 | - | 61 |
| Biggest New Zealand Cities by Region | 16 | 0 | - | 37 |
| Rumantsch | 2 | 0 | - | 15 |
