There are thousands of online slots available, and they can be separated into various categories. Classic 3-reel slots have a retro vibe, reminiscent of classic fruities. They typically feature fruit machine symbols, such as cherries, lucky 7s and bars. You will most commonly find 5-reel slots when you play at top slot sites online. Video slots with 5 reels offer many more paylines and ways to win, making for a more fun experience overall.