Yoou think your gacha game is generous? Then read this Arknights is my recommendation, every week you get gacha ingredients from permanent annihilation, every 2 months there will be a new annihilation that is not permanent but you can get gacha materials too, every month there is an event and you can get gacha materials from stages and prizes that can be found in the event shop , and there are many more ways to get gacha materials such as Story, green and yellow shop certification, daily and weekly missions, even though the event is rerun it is still profitable because you can still get gacha materials and can exchange prizes at the event shop again, even every half a year or 1 the anniversary year is given 20× free gacha, and each maintenace can even be compensated for gacha materials, each character even has their own stage with prizes of gacha materials (paradox simulator), there are even free and paid packages (but you pay using originium, what is that? stones that can be obtained when you first clear a stage, and don't worry because there are many stages and lots of event even the story stage of the game is quite far, so paying with originium is okay in fact it's actually very profitable, those who have played definitely know) from level 0 to a certain level, and maybe that's not all because every Hai Mao celebration live will give gacha materials free also via mail and much more, such as 30 days daily login or events and so on