All depends on people tastes. Somebody likes traditional one-arm bandits and chose 3-reels slot machines, somebody wants to observe an interesting idea in slot machine or just looking for his/her favourite movie slot. Somebody tends to chose slots with new technologies like AR, VR, etc. The industry niche is the most filled with video slots, that proves the jackpot winning scores. But it’s just a game of luck, don’t forget about it!