Keno house edge typically ranges from 20 percent to 40 percent. Slots range from 2 percent to 15 percent. Even below-average slots beat the best keno games.
Best slots: 98 percent RTP. Best keno: around 75 percent RTP at generous casinos. That is a 23 percent gap in returned money over time.
Keno works for slow, low-stakes entertainment where jackpot dreams matter more than odds. Slots work when you want actual RTP value and variety.