You will find plenty of classic slots in our list of all-time best online slots. Not everyone wants free spins and progressive jackpots, after all. For every 4,096-ways-to-win slot that attracts players, there is a simple game with minimal win lines and no bonuses. And when video slots came along, the improved processing power of machines allowed for linked jackpots and exciting bonus features.īut slot gamblers can be a nostalgic bunch. As technology improved, more and more paylines were added. In the early days of slot machines, games came with just a single payline running horizontally across the middle of the reels.