Slot Machines: A Complete Guide Slot machines have long been a mainstay of both land-based & virtual casinos, drawing players in with their eye-catching visuals, captivating themes, & the alluring slots earning apppossibility of striking it rich. Anyone who wants to improve their gaming experience must have a basic understanding of how these machines work. At their core, slot machines are games of chance where each spin's result is determined by a random number generator (RNG). Because every spin is independent & unpredictable thanks to this technology, past results have no bearing on future results.