Bullet time
A device where game time slows down while the player's control stays responsive, so fast action becomes readable and aimable.
Technically a time-scale factor is turned down and folded into the delta time and the fixed timestep: physics, animation and projectiles update more slowly, but input polling and the camera run at full rate so it feels snappy rather than sluggish. That asymmetry is the whole point.
Max Payne (2001) popularised the device and borrowed the name from The Matrix (1999), where the camera swept around bullets hanging in the air. The trap is anything that assumed a frame is a fixed unit of time — timers, cooldowns, sound — which must respect the scale too, or the game drifts apart when time bends.