It means the grid has four vertical columns that spin; the number of paylines and game mechanics are built around those four reels.
Paylines vary by title, but many 4-reel slots use 25–50 paylines or implement ‘ways to win’ formats that reach similar counts.
RTPs for 4-reel slots generally fall in the 94%–97% range; always check the specific game’s paytable for the exact value.
Common features include free spins, wilds, scatters, multipliers, and sometimes expanding symbols or cascading reels.
Volatility depends on the individual game design; some 4-reel titles are low volatility while others are high. It isn’t fixed by the reel count.
Yes, some 4-reel slots offer fixed jackpots or progressive jackpots, but many provide standard top prizes instead.
Bet ranges vary by game, but you’ll usually see minimum bets around 0.10–0.20 per spin and maximum bets that can reach a few dollars or more per spin.
Yes, most online casinos offer demo or practice modes that let you play for fun or learn the mechanics without real money.
Yes, most 4-reel slots are mobile-friendly and play smoothly on smartphones and tablets.