DragonSlots
Welcome package up to ¥365,000 (up to 225%)
This page collects the operators that do two things at once: run a Japanese language site and publish a welcome figure denominated in yen. Both are checkable, which is the only reason a site appears here at all.
Every figure below was published by the operator or by a Japanese review portal, and is reproduced without conversion or rounding. Where an operator does not publish an amount for Japan, it is left out of the list rather than described with an estimate. The order follows the ranking model used across this site and is explained on the how we rate page.
None of this makes online casino play legal in Japan. Betting through an offshore casino from inside the country falls under articles 185 and 186 of the Penal Code, and since 25 September 2025 advertising and soliciting for such sites is separately prohibited. The list is a description of a market that exists, with the legal position stated alongside it.
Figures below are the welcome offers published for Japan by the operators themselves or by Japanese review portals; nothing here is converted or estimated. No online casino holds a Japanese licence, and betting from inside Japan is an offence under the Penal Code — this is a description of the market, not a recommendation to play.








Figures are the welcome offers the operators or Japanese review portals have published; we do not convert or estimate amounts. Links marked “Go to site” are commercial. Online casino play from within Japan is an offence under the Penal Code, and this list is a description of the market, not an invitation to play.

What each site publishes, field by field.
Welcome package up to ¥365,000 (up to 225%)
100% up to ¥15,000 + 120 free spins
100% up to ¥12,000 + 100 free spins
100% up to ¥75,000 + 70 free spins
100% up to ¥49,500 + 30 free spins
100% up to ¥65,000 + 200 free spins
Up to ¥17,500 on the first deposit
100% up to ¥15,000 on the first deposit