Orientation is vertical-only in the engine today; a horizontal board is a custom layout, not a builder flag.
Answered
Reel motion & board shape
How do I make reels horizontal instead of vertical?
More in Reel motion & board shape
- How do I make symbols drop in from above instead of scrolling?
- How do I make a reel land with a bounce?
- How do I stagger the fall of individual symbols into place?
- How do I make symbols rise up from below (roll-up)?
- How do I spin one reel up and another down (mixed directions)?
- How do I peek the next symbol from above before it lands?
- How do I nudge a reel by one position after it stopped?
- How do I add rows to a reel at runtime (the board grows)?