It's a pity... OK, but, i think, it will not be bad if i however describe
here variant of my previous game (because i said before 'i will describe
it later', and i'll not be writing about other variants here later).
8X8 boaed, but with special cells in corners (like in Omega Chess), there
are special units in them.
Files A and B are 'european zone', C and D - 'mongolian zone', E and F
- 'chinese zone', and J and H - 'japanese zone'. In european and
japanese zones pieces promotes as in previous variant. In mongolian zone
they promotes to Shatar pieces, and in chinese zone, as you can guess, to
Xian-qi pieces. There is no river and palace, so no pieces are restricted.
Shogi dropping is mandatory, but rules of 'becoming/not becoming shogi
pieces after drop' and 'promote to certain piece forever/not forever'
are still optional. There is no rule of dropping Shogi rook and bishop
after promoting 4 pieces to Shogi, but they exists in game, see below.
When knight and elephat promotes in ch. zone they loses power - they will
not be able to leap. Ferz don't change it's movement. Chariot promotes to
Xian-qi chariot - it moves like FIDE rook. After promotion here, king can
move only 1 square orthogonally, but also can check opponent's king like
rook (if both kings promoted in ch. zone, they can't stay in same file or
rank if there is no piece between them). Pawn now must move and capture
orthogonally forward, left and right (when dropped, it can't move left and
right, until it's again on opponent's half of board). This pawn don't
promote farther.
In mongolian zone all pieces, expect for pawn and ferz, promotes to FIDE
pieces. Ferz promotes to bers - moves like rook plus one square diagonally
(like dragon king). Pawns are same as FIDE, but promotes only to bers and,
wnen dropped, can't make duble step, also can't capture FIDE pawns en
passant.
Now about special units. There left and right special units. In beggining
they both are camels from Tamerlan's chess (3:1 leap). They promotes not
to thier relatives, but pieces, wich was invented separately. In ja. zone
left promotes to Shogi rook and Bishop (and farther to dragon king and
dragon horse). In ch. zone they both promotes to cannons. In mo. zone they
promotes to bodyguards from Hiashatar (moves 1-2 squares like queen, don't
capture, have 'influence zone' in 8 squares around them, other pieces
can't cross this zone, inside it can move only 1 squre (decide yourself,
what with pieces wich can't move only 1 square, like knght), they can be
captured only in thier 'influence zone'). special units don't promote in
eu. zone (as there is not any special pieces in FIDE ches), but they don't
lose ability of promotion: they can promote as they enter any other zone.
They don't become camels again when you playing with rule of 'not promote
to certain piece forever', for exemple, if one of them moved from F5 to
A5, it is still cannon. However, if both players are agreed, they can
promote:
1. Left archbishop, right to chanselor (from Capablanca chess).
2. Left to champion, right to wizard (from Omega chess).
3. Both to grasshopers.
4. One to grasshoper, another to knightrider.

It also be fun to play on 10X8 or 10X10 board, where special units
sorrounding king and ferz, and there is spanish (Grand Acedrix) OR german
(Courier chess) zone.