Piranha Simulator

You are a school of piranhas in an Amazon river. Eat smaller fish to grow. The swarm levels up from Speck of Teeth through Nipping Shoal, Hungry Swarm, Frenzy, Razor Cloud, Flesh Tide, Bone Storm, Blood Horde and River Plague, all the way to Amazon Apocalypse. - Know what you can eat: tier-1 fish are always edible, and bigger tiers open up at levels 2, 4, 6, 8 and 10. Bigger prey takes several bites before it gets away. Anything under a red skull is too big for you, so run. - From level 2, eat or starve. - 17 real Amazon species in the in-game Field Guide, from neon tetras and guppies up to arapaima, piraíba, the bull shark and the electric eel. - Boss fight against the green anaconda. - Scatter your swarm to dodge danger. - River minimap and a pixel-art jungle river. Plays in the browser on phones (touch) and desktop (keyboard). Credits: made by Lucas as his entry for BioCraftEd Game Jam #1 (3 Oct 2026), published by BioCraftEd Studios. Fonts: Bungee and Silkscreen (SIL Open Font License 1.1). More games at https://games.biocrafted.xyz AI use: the sound effects and music were generated with ElevenLabs (AI). That's why this listing is labelled AI-Assisted.