Good at first, but downhill after update. Most of the banners require you to spend £20 in paid gems minimum for hypersexualised bastardisations of your favourite characters, and the ones that don't have rates so bad that you can go the entire game without getting an SSR. Half way through the game, you lose the ability to catch monsters, so you can only get them through the gacha system. Even customising your profile with monsters you already own costs money. All they want is money and it shows.