Double Down Casino has tons of great Casino Slot Machine Games with Bonuses to play for FREE without downloads or registrations!. + free slot games available ☆ Play with ✓ no download ✓ no registration ✓ no deposit ✓ 30+ popular slot providers. First of all, Welcome! We bet you love to play free slot games online, that is why you got here! So, good news, free slots is something we are crazy about as well. No Download Slots · No Registration Slots · No Deposit Slots.