Hold anywhere to charge and let go to cast; further out is deeper water with different fish. Little dips of the bobber are nibbles. When it plunges under, tap right away. Then reel: hold to pull the line in and keep the needle in the gold zone. When the fish makes a run, ease off or the line snaps; leave it slack too long and it slips off the hook. Big fish and rare ones fight harder. There are 30 kinds across three spots: a countryside pond, the seaside and a night lake. 27 are real species at their usual sizes (crucian carp, koi, sea bream, yellowtail, pike, sturgeon...), and 3 are secret fantasy fish. Some of Dudu's own things fell in the water too: a cushion, a teddy, a wind chime and more. The fish book keeps every kind and your biggest of each. Sell your catch, or let Chef Dudu cook it into a local dish: fewer coins, but Dudu is full and the next casts bite easier. Coins buy a better line and reel. Outfits each bring a knack: the straw hat keeps the line steady, the pirate finds rare sea fish, the moon fox finds rare night fish, the fortune god sells for more. Dudu is the hand-drawn character from the Y Build app. The fish and the three places were drawn by AI. Sound effects are from Kenney (CC0); the background music is AI-generated; the water sounds and Dudu's little call are synthesized in the game. Progress is saved on your phone.