Shogi Variants

Shogi-set Nearlydouble Variants

Taikyoku shogi - Wikipedia

Tenjiku Shogi, Board Game

Shogi Variants (1996) - MobyGames

Large Shogi variants

Chu shogi - Wikipedia

Shogi Variants Download (1998 Strategy Game)

Shogi - Wikiwand

Chu Shogi, Part I: How to Play

Ko shogi - Wikipedia

Shogi - Japanese Chess

WinBoard and Large Shogi

Zo Shogi (象將棋), a variant of Sho Shogi : r/chessvariants

Shogi and Shogi variants

In my free time, I have been making 8-bit shogi pieces and I'm planning to at least have the majority of shogi variants done by the end of the year : r/shogi