​OTB (Order Turn Battle) is a turn-based battle system, popularized by Octopath Traveler and ported to RPG Maker MZ by VisuStella. Instead of the default “everyone inputs, then everyone acts” loop, OTB makes the turn order visible and individual:

• Two queues are drawn at the top of the battle screen — Current Turn (who acts this round, left-to-right) and Next Turn (who acts after).
• When a battler reaches the front of the Current Turn queue, that one battler acts immediately — actors get a command window, enemies AI-pick — then the slot is consumed and the queue advances.
• Initial order is rolled from agility. After that, only the Next Turn queue can be reshuffled — by action speed, by AGI buffs/debuffs, or by OTB notetags on the skill being used. Once a turn is set, raw AGI changes can’t change it.
• When the Current queue empties, Next becomes Current and a fresh Next is built. End-of-turn state ticks and regen happen at that rollover.

https://a-higher-plane.itch.io/order-turn-battle-otb-plugin-for-rpg-maker-mv

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