| Series | # | | Rating | Takes |
|---|
| Länder, die mit … beginnen | 20 | 20 | 4.73 | 1,591,872 |
| Quizzes mit Karten | 39 | 36 | 4.73 | 1,278,551 |
| Deutschland | 36 | 31 | 4.64 | 984,540 |
| Länder | 48 | 47 | 4.61 | 825,420 |
| Fußball-Quizzes | 20 | 13 | 4.35 | 784,092 |
| Quizz français de Gassu | 17 | 14 | 4.60 | 647,363 |
| Gassu's SVG Quizzes | 44 | 9 | 4.63 | 547,512 |
| Geschichts-Quizzes | 50 | 48 | 4.51 | 485,018 |
| Flaggen-Quizzes | 11 | 11 | 4.73 | 391,313 |
| Antworten sind europäische Länder | 17 | 16 | 4.77 | 389,472 |
| Politik-Quizzes | 15 | 13 | 4.53 | 261,340 |
| The Only ... | 5 | 3 | 4.60 | 254,159 |
| die deutsche Sprache | 15 | 11 | 4.34 | 242,453 |
| Geographie nach Buchstabe | 25 | 25 | 4.36 | 224,805 |
| Bilder nach Buchstabe | 25 | 25 | 3.79 | 223,871 |
| 5 pro Kontinent Quizzes | 6 | 6 | 4.77 | 219,363 |
| Allerlei | Sonstiges | 13 | 13 | 4.48 | 199,301 |
| Sport-Quizzes | 11 | 9 | 4.40 | 192,262 |
| Which City in ... | 3 | 3 | 4.46 | 174,978 |
| Die größten Städte | 15 | 13 | 4.42 | 170,928 |
| United States Politics | 18 | 1 | 4.30 | 170,145 |
| Gewässer und Inseln | 15 | 15 | 4.51 | 160,102 |
| Sprachen | 13 | 12 | 4.51 | 148,382 |
| Countries by Picture | 13 | 6 | 4.26 | 147,894 |
| Pruebas de Gassu en español | 7 | 7 | 4.35 | 141,720 |
| Name a Valid Answer | 3 | 3 | 4.57 | 141,366 |
| Bild-Quizzes | 23 | 20 | 4.22 | 139,148 |
| Antworten sind Städte | 16 | 14 | 4.30 | 137,222 |
| Geschichte nach Buchstabe | 25 | 25 | 4.42 | 135,405 |
| Länder / Städte mit Hinweisen | 14 | 13 | 4.65 | 113,663 |
| Religion | Mythologie | 12 | 12 | 4.37 | 113,111 |
| Meistbesuchte Länder von ... | 8 | 7 | 4.70 | 98,387 |
| Länder Trivia | 14 | 14 | 4.47 | 95,474 |
| Allgemeinwissen der Geschichte | 12 | 12 | 4.34 | 92,938 |
| Mathematik-Quizzes | 2 | 2 | 4.40 | 88,461 |
| Regionen, Provinzen etc. | 11 | 10 | 4.63 | 87,300 |
| Von Nord bis Süd | 4 | 4 | 4.65 | 85,159 |
| Österreich | 6 | 6 | 4.73 | 74,659 |
| Wikipedia Quizzes | 5 | 2 | 4.28 | 73,633 |
| Tourismus-Quizzes | 4 | 4 | 4.61 | 71,531 |
| Achtung Abflug! | 3 | 3 | 4.76 | 63,994 |
| Zusammengefügt! | 6 | 6 | 4.58 | 62,877 |
| United States Cities | 34 | 2 | 4.53 | 62,431 |
| City Quizzes | 53 | 2 | 4.35 | 62,311 |
| 100 Longest Rivers by Continent | 7 | 1 | 4.93 | 59,055 |
| A-Z Quizzes | 15 | 1 | 4.51 | 55,470 |
| Hauptstädte - Karten-Quiz | 6 | 6 | 4.70 | 55,215 |
| Wahrzeichen von Ländern | 4 | 4 | 4.85 | 53,830 |
| Polska | 2 | 1 | 4.87 | 53,734 |
| Tier-Quizzes | 7 | 6 | 4.16 | 52,136 |
| Schweiz | Suisse | Svizzera | Svizra | 9 | 7 | 4.62 | 49,838 |
| Geographie A-Z | 7 | 7 | 4.42 | 46,937 |
| United States Geography | 23 | 2 | 4.29 | 45,703 |
| Gassu's Flag Quizzes | 3 | 1 | 4.60 | 39,039 |
| Antworten sind asiatische Länder | 4 | 4 | 4.59 | 36,623 |
| Personen nach Land | 5 | 5 | 4.53 | 35,284 |
| Gruppen von Dingen | 4 | 2 | 4.46 | 34,344 |
| Gassu's Sports Quizzes | 30 | 1 | 4.23 | 33,822 |
| Elemente (Chemie) | 2 | 2 | 4.68 | 33,009 |
| Newsmeldungen - Nenne das Land | 4 | 4 | 4.56 | 22,794 |
| Gemeinden der Schweiz | 27 | 0 | 4.85 | 21,781 |
| Monarchie | Royals | 3 | 2 | 4.59 | 21,039 |
| World's 50 Largest Cities | 26 | 0 | 4.16 | 18,309 |
| Geographie nach Anzahl Buchstaben | 2 | 2 | 4.47 | 16,982 |
| italiano | 3 | 1 | 4.79 | 16,515 |
| California | 5 | 1 | 4.66 | 15,508 |
| It's All About Countries | 38 | 0 | 4.47 | 12,993 |
| Five Cities by Continent by Letter | 26 | 0 | 3.75 | 12,670 |
| Städte-Trivia | 8 | 5 | 4.51 | 9,918 |
| Misc | 26 | 0 | 4.39 | 7,525 |
| Communes de Suisse | 7 | 0 | 4.83 | 7,304 |
| Religion | 5 | 0 | 3.17 | 7,097 |
| Ereignisse nach Monat | 5 | 4 | 4.10 | 7,058 |
| Switzerland | 19 | 0 | 4.44 | 6,940 |
| Biggest Cities in the E.U. by Letter | 26 | 0 | - | 5,998 |
| Historical Quizzes | 19 | 0 | 4.39 | 5,996 |
| Language Quizzes | 12 | 0 | 4.88 | 5,801 |
| Gassu‘s Geographic Groups | 4 | 0 | 3.98 | 5,751 |
| Groups of Things | 6 | 0 | 3.86 | 5,638 |
| World Politics | 13 | 0 | 4.26 | 5,113 |
| Transportation | 12 | 0 | - | 3,624 |
| Auckland Quizzes | 7 | 0 | 4.92 | 3,437 |
| Largest European Cities by Letter | 23 | 0 | - | 3,197 |
| the Britons and their Commonwealth | 5 | 0 | 4.89 | 2,954 |
| Italy | 5 | 0 | 4.83 | 2,764 |
| Five Biggest Cities by Region | 6 | 0 | 3.60 | 2,589 |
| Donald J. Trump | 5 | 0 | 3.75 | 2,585 |
| Germany | 10 | 0 | 4.44 | 2,581 |
| Answers are U.S. States | 11 | 0 | 3.95 | 2,580 |
| 100 Questions about … | 6 | 0 | - | 2,405 |
| Decoder Quizzes | 7 | 0 | - | 2,335 |
| All 100k+ Urban Areas | 2 | 0 | 4.88 | 2,181 |
| Gassu Quizzes | 8 | 0 | 4.44 | 2,129 |
| US State General Knowledge | 11 | 0 | - | 1,981 |
| Oceania Quizzes | 5 | 0 | 4.75 | 1,833 |
| Islands! | 17 | 0 | 4.00 | 1,809 |
| New Zealand Quizzes | 16 | 0 | 5.00 | 1,766 |
| France | 8 | 0 | 4.50 | 1,638 |
| Spain | España | 7 | 0 | 5.00 | 1,565 |
| Countries by a Single Word | 6 | 0 | - | 1,557 |
| All 500k+ Urban Areas | 2 | 0 | 4.70 | 1,536 |
| Physical Geography by Picture | 6 | 0 | - | 1,435 |
| Notable People by City | 6 | 0 | 4.89 | 1,402 |
| Bundesliga | 3 | 0 | - | 1,375 |
| Gassu's Tile Quizzes | 3 | 0 | 4.80 | 1,135 |
| Europe's Largest [...]-Letter Cities | 7 | 0 | 4.73 | 1,100 |
| Stoopid Quizzes | 2 | 0 | 4.71 | 1,045 |
| Gassu's City Trivia | 2 | 0 | - | 963 |
| Biggest Cities in NATO by Letter | 9 | 0 | - | 848 |
| Interesting Facts | 3 | 0 | - | 820 |
| JetPunk Quizzes | 7 | 0 | - | 725 |
| The 30 Greatest … | 8 | 0 | - | 717 |
| Animals | 2 | 0 | 4.36 | 710 |
| Cities as a Percent of the Continent | 5 | 0 | - | 519 |
| Country Details | 4 | 0 | - | 465 |
| the Nordics! | 2 | 0 | - | 437 |
| Biggest European Cities by Letter | 6 | 0 | - | 401 |
| Top 50 Largest European Cities | 1 | 0 | - | 401 |
| Most Guessed Things | 3 | 0 | - | 398 |
| Analogies | 2 | 0 | - | 363 |
| Biggest Cities in the Americas by Letter | 4 | 0 | - | 338 |
| 21st Century in ... | 4 | 0 | - | 280 |
| The Tesla Series | 2 | 0 | - | 247 |
| Gassu's Discord Quizzes | 4 | 0 | - | 243 |
| The Pacific Ocean by Letter | 3 | 0 | - | 238 |
| Biggest New Zealand Cities by Region | 16 | 0 | - | 213 |
| Rivers | 3 | 0 | 4.86 | 176 |
| Random Tourist Attractions | 2 | 0 | - | 151 |
| Rumantsch | 3 | 0 | - | 54 |
