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This list includes the number of casinos powered by each provider, and the number of online casinos where you can play for free. The list is sorted by number of casinos.

* Note: Some casino software providers have restrictions on where their games can be offered.

Top game providers in Japan by number of casinos
Software Casinos Free coupons
Games Global

Explore 26 Free Bonuses

Pragmatic Play

Explore 24 Free Bonuses

Evolution Gaming

Explore 26 Free Bonuses

NetEnt
(NetEnt Group)

Explore 26 Free Bonuses

Play n GO

Explore 25 Free Bonuses

Big Time Gaming

Explore 18 Free Bonuses

BetSoft
(Betsoft Gaming)

Explore 18 Free Bonuses

Just for the Win
(JFTW - Just For The Win Game Development AB)

Explore 10 Free Bonuses

Thunderkick

Explore 18 Free Bonuses

Red Tiger
(Red Tiger Gaming Limited)

Explore 19 Free Bonuses

QuickSpin

Explore 17 Free Bonuses

Blueprint Gaming

Explore 16 Free Bonuses

Booming Games

Explore 16 Free Bonuses

ELK Studios
(ELK Studios AB - Sweden)

Explore 17 Free Bonuses

NolimitCity
(Nolimit City Stockholm AB, Sverige)

Explore 17 Free Bonuses

Foxium
(Foxium OÜ - Estonia)

Explore 7 Free Bonuses

Playson

Explore 18 Free Bonuses

Spinomenal
(BestSlots)

Explore 16 Free Bonuses

Yggdrasil Gaming

Explore 15 Free Bonuses

Wazdan
(Wazdan Holding Limited)

Explore 17 Free Bonuses

Habanero
(Habanero Systems B.V.)

Explore 16 Free Bonuses

1X2gaming

Explore 16 Free Bonuses

Hacksaw Gaming

Explore 13 Free Bonuses

Tom Horn
(Tom Horn Gaming)

Explore 14 Free Bonuses

Iron Dog Studio
(1x2 Network )

Explore 15 Free Bonuses

Top 10 Online Casino Bonuses in Japan (May 2025)

Expert-Rated Real Money Casinos with Top Bonuses

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With nearly two decades of experience in the industry, CasinoBonusCenter.com has been analyzing and comparing online casinos since 2006. Our dedicated team of professionals has handpicked the most trusted casinos for Japanese players to ensure you get the biggest sign-up bonuses, top-tier games, and the most rewarding loyalty programs.