Your Dopas make dopamine. Collect it, pen them up, and keep your striatum lit. Every hit builds tolerance, and the drain never stops.
Walk through molecules to raise your DA level. Gold ones are a Rush and lower your tolerance.
Herd Dopas into the pen. Lasso one with E or a click and lead it in, or walk at them to push. Near the gate they get pulled in, and they stay. Penned Dopas make dopamine 2.6× faster.
Tolerance builds with every hit, so each molecule is worth less. Space your hits out.
Cheap hits (phones, energy drinks, donuts, loot boxes) spike your DA fast. Every one has a catch.
Power-ups glow under a light beam: Multi-Lasso, Runner's High, Reuptake Magnet, Dinner Bell and Serotonin.
Every level is a new ranch. Mud, sand, leaf piles and snowdrifts slow you and the Dopas. Ice makes you slide.