Answer "what changed in which Minecraft version" and keep a build inside the block set that actually exists in the target version. Covers Java Edition from 1.13 to 1.21.11 and the year-based 2026 drops (26.1 Tiny Takeover, 26.2 Chaos Cubed, 26.3 Wilderness Bound), with per-version lists of builder-relevant blocks, variants and mechanics, the Bedrock version mapping, substitutions for older targets, pack format numbers, Java runtime requirements and world migration tools. Use when a build must run on a specific version or version range, when a palette may contain blocks that do not exist yet in the target, when downgrading or upgrading a world or schematic, or when a data …
