Diod 0.1.0.51 — Pre-alpha New journeys begin in Africa, with one starting harbour and a persistent geographic terrain foundation. Planet terrain streams with distance detail and source-owned excavation; terrain edits and loose material persist across reloads. Water has geographic finite-volume storage and background simulation, with improved wind-driven waves and swimming presentation. Return locally to previously visited safe ground through the map. Market, paid miners, crafting, inventory and placement remain available. Fixed concurrent save-reader registration, worker transaction compatibility, and water-job priority around recent digging. Save compatibility Start a fresh African journey. Version 50 regional saves remain untouched in their previous save root and are not migrated. Replace the application only while it is closed. Known limits Whole-planet travel and remote teleport are deferred. The current starting chart remains bounded to 19 km from its centre; ships remain moored. Pre-alpha performance: startup and excavation can take noticeable time; broad frame-rate and water-quality improvements continue in v52. No native Windows/Linux desktop, Intel Mac or physical-controller acceptance in this release. Validation Native Apple M4 Metal, Low 160m: 29 local-game checks passed, including real New Journey/menu/map input, walking, safe visited teleport, paid chest placement and save reload. A real submerged pickaxe cut updated ground collision, finite water flowed into the cut, and fresh-process reload restored the pit and resumed simulation (5 checks). The source startup measurements were 53.8–60.1 seconds, not an FPS benchmark. Captures were inspected. Source regressions: geographic tool 13, water state 15, water view 9, water runtime 18, cave placement 9, crafting/market 33, workers 36. The save-reader stress check passed 600 reader/fork cycles across 80 concurrent commits. Final Linux exported identity, crafting/market, workers, cave placement, corrected external concurrency harness and normal start screen passed. Windows export/icon/version passed. Final Mac archive: Apple Developer ID signed, notarized and stapled. Exact signed ZIP SHA/bytes and all9 extracted files/modes verified. Strict deep all-architecture signature and quarantined Gatekeeper accepted. Exact notarized app passes29 native local-game checks (53.0s startup), exported identity/phase33 and corrected external600-fork/80-commit concurrency test. Intel Mac and physical controllers remain untested. The initial native harness needed to wait for cold-window layout before sending its click; the corrected test passes without a gameplay change.