Yes. Genesis online casino offers real money games, meaning you need a deposit to stand a chance of winning cash. However, you don't have to deposit anything while playing demo games. Virtually all slots and other RNG-based options feature a demo mode for players who want to practice. You can enjoy demos for new releases to get an overall feel of the slot before you start betting cash. Note that demos don’t feature a payout. If you plan to win something from your sessions, you’ll need a deposit or no deposit bonuses, which are quite rare at Genesis casino.