Game feel (sometimes called 'juice') is the sum of all the micro-feedback systems that make interacting with a game satisfying on a visceral level. Screen shake on impact, hitstop frames that freeze the action for a split second during a hit, particle bursts, squash-and-stretch animation, punchy sound effects, camera zoom, chromatic aberration on damage, controller rumble, speed lines. None of these affect gameplay mechanically, but they transform a technically functional game into one that feels incredible to play. Vlambeer pioneered the modern discourse around juice with their talks and games like Nuclear Throne, where every shot feels like an event. For indie developers, juice is the great equalizer because it costs almost nothing to implement but dramatically elevates perceived quality.