–

MAINLINE

Bakuevo · Sep 13, 2026

You are caffeine. A high-velocity roguelike FPS through a human bloodstream. Your survival timer only refills by killing — stop and you're metabolized. Every kill makes you faster. Every run rolls new weapons and upgrades. Reach the brain before he falls asleep.

About MAINLINE

YOU ARE CAFFEINE. Injected into the arm of a human running on empty. Reach the brain before you are metabolized, and wake him before he falls asleep. KILL ENEMIES. KEEP TIME ALIVE. An unbroken kill chain and absolute speed — a super-adrenaline-max roguelike FPS. Your survival time is 4 seconds. Killing enemies gives time back. Taking a hit drains it further. As metabolism closes in, your vision darkens and your heartbeat accelerates. There is no bar showing how much time remains. THE MORE YOU KILL, THE FASTER YOU GO You never stop moving forward through the bloodstream. Strafe around the vessel wall — slip past incoming fire and the clots blocking your path. Every kill raises your speed. Then it is on to the next enemy. Keep killing and the acceleration stacks, your view widens, and the speed lines stretch out. This is not a racetrack. It is a human blood vessel. The speedometer does not read km/h. It reads nm — nanometers. Tear through this microscopic world fast enough to rip your vision apart. Every enemy carries a weak point inside its body. Finish one through the weak point and your magazine comes back whole. NO TWO RUNS ARE THE SAME Clear a stage, then take one of three cards