DOS · JOY (JOY) · May 26, 2026 · May 26, 2026
diff --git a/ROADMAP.md b/ROADMAP.md
@@ -472,10 +472,13 @@ prototype.
   in #260.
 - [ ] Check `docs/design/38-alpha-design-decision-register.md` before reopening
   any alpha scope debate or treating older TODO text as blocking. Track in #260.
-- [ ] Implement alpha stats and skills from
+- [ ] Implement alpha stats and skills from #260 and #275:
   `docs/design/39-alpha-stats-and-skills-design.md`: 1-15 stat scale, body
   archetype budgets, skill origin model, first skill slots, Sentinel starter
-  kit, semantic skill intents, and server validation. Track in #260.
+  kit, semantic skill intents, and server validation. Implement body level, XP,
+  body stat points, and derived-stat recompute from
+  `docs/design/57-alpha-level-core-stat-progression.md`. Track in #260 and
+  #275.
 - [ ] Implement the alpha carryover and sync model from
   `docs/design/40-soul-skill-carryover-and-sync.md`: skill origin labels,
   carryover rules, lock reasons, simple soul-body sync, and server-validated

diff --git a/docs/SUMMARY.md b/docs/SUMMARY.md
@@ -73,6 +73,7 @@
 - [Networked Player Controller Prototype](design/07-player-controller-prototype.md)
 - [AI NPC Backend And Client Feature Roadmap](design/37-ai-npc-backend-client-roadmap.md)
 - [Alpha Stats and Skills Design](design/39-alpha-stats-and-skills-design.md)
+- [Alpha Level and Core Stat Progression](design/57-alpha-level-core-stat-progression.md)
 - [Soul Skill Carryover and Sync Design](design/40-soul-skill-carryover-and-sync.md)
 
 ## Research and References

diff --git a/docs/design/03-systems-index.md b/docs/design/03-systems-index.md
@@ -74,27 +74,30 @@ The first alpha execution spine is:
 12. [39-alpha-stats-and-skills-design.md](39-alpha-stats-and-skills-design.md)
     for alpha stat scale, body archetype budgets, skill origin, skill slots,
     first body kits, skill data, and validation rules.
-13. [40-soul-skill-carryover-and-sync.md](40-soul-skill-carryover-and-sync.md)
+13. [57-alpha-level-core-stat-progression.md](57-alpha-level-core-stat-progression.md)
+    for body level, XP curve, body stat points, derived stat recompute, and
+    inventory/equipment stat requirement handoff.
+14. [40-soul-skill-carryover-and-sync.md](40-soul-skill-carryover-and-sync.md)
     for learned skill survival, body imprint loss, equipment gates,
     soul-body sync, effective skill execution, and UI lock reasons.
-14. [41-alpha-asset-shortlist.md](41-alpha-asset-shortlist.md) for alpha asset
+15. [41-alpha-asset-shortlist.md](41-alpha-asset-shortlist.md) for alpha asset
     candidates, purchase guidance, style-fork comparison, import test order,
     and visual budget risks.
-15. [42-alpha-visual-budget.md](42-alpha-visual-budget.md) for PC alpha, Web
+16. [42-alpha-visual-budget.md](42-alpha-visual-budget.md) for PC alpha, Web
     demo, and mobile candidate budgets covering characters, environments,
     materials, lighting, NPC counts, VFX, and issue #151 WebGL risks.
-16. [43-alpha-material-shader-recipe.md](43-alpha-material-shader-recipe.md)
+17. [43-alpha-material-shader-recipe.md](43-alpha-material-shader-recipe.md)
     for the Unity 6000.5 URP clean PBR recipe, URP Lit / Simple Lit / toon
     shader comparison protocol, platform material defaults, and look-dev
     evidence checklist.
-17. [44-alpha-body-rig-action-compatibility.md](44-alpha-body-rig-action-compatibility.md)
+18. [44-alpha-body-rig-action-compatibility.md](44-alpha-body-rig-action-compatibility.md)
     for the Unity 6000.5 Humanoid Avatar, action registry, weapon visibility,
     root motion, scale, nameplate, and candidate body evidence checklist.
-18. [48-art-direction-and-asset-buying-guide.md](48-art-direction-and-asset-buying-guide.md)
+19. [48-art-direction-and-asset-buying-guide.md](48-art-direction-and-asset-buying-guide.md)
     for Anime-Ready Semi-Real asset-buying guardrails, medieval asset limits,
     character and environment requirements, reject criteria, and Unity 6.5 URP
     import evaluation.
-19. [45-inventory-and-equipment-system.md](45-inventory-and-equipment-system.md)
+20. [45-inventory-and-equipment-system.md](45-inventory-and-equipment-system.md)
     for body carry inventory, account/soul stash, Garden stash, temporary Gate
     loot, equipment slots, custody lifecycle states, hostile / monster / boss
     body equipment rules, starter item definitions, death loss rules, UI flows,
@@ -124,7 +127,7 @@ blockout tasks for the alpha.
 | 41 | The Garden living roster loop | Gameplay / Meta | VS | Concept | [33-alpha-production-backlog.md](33-alpha-production-backlog.md), [26-alpha-game-design-document.md](26-alpha-game-design-document.md), [27-alpha-level-design.md](27-alpha-level-design.md), [25-core-loop-v1.md](25-core-loop-v1.md), [24-pick-me-up-reference-analysis.md](24-pick-me-up-reference-analysis.md), [37-ai-npc-backend-client-roadmap.md](37-ai-npc-backend-client-roadmap.md) | Actor profiles, NPC memory, TIME / SECOND economy, Gate missions, AI agent policy |
 | 42 | Garden personalization and decor | Gameplay / Social | VS | Concept | [25-core-loop-v1.md](25-core-loop-v1.md) | The Garden, actor profiles, NPC memory, outcome reports, inventory, social visits |
 | 37 | OpenClaw-connected NPC bridge (user-owned agents as NPC actors) | Gameplay / Meta | Alpha | Concept | [10-character-profile-agent-memory.md](10-character-profile-agent-memory.md) | Auth, Nakama, api.dos.ai model service, NPC dialogue, LLM safety |
-| 12 | Level/stat progression | Progression | MVP | Prototype | [40-soul-skill-carryover-and-sync.md](40-soul-skill-carryover-and-sync.md), [39-alpha-stats-and-skills-design.md](39-alpha-stats-and-skills-design.md), [14-character-stat-and-relationship-system.md](14-character-stat-and-relationship-system.md) | Persistence |
+| 12 | Level/stat progression | Progression | MVP | Prototype | [57-alpha-level-core-stat-progression.md](57-alpha-level-core-stat-progression.md), [40-soul-skill-carryover-and-sync.md](40-soul-skill-carryover-and-sync.md), [39-alpha-stats-and-skills-design.md](39-alpha-stats-and-skills-design.md), [14-character-stat-and-relationship-system.md](14-character-stat-and-relationship-system.md) | Persistence |
 | 13 | Reincarnation flow (death -> SECOND -> new Frame) | Progression | VS | Prototype | [12-game-design-document.md](12-game-design-document.md) | Level/stats, NFT escrow, Persistence |
 | 14 | SECOND economy | Economy | VS | Not designed | (GDD pending - JOY input) | DOS Chain integration |
 | 36 | TIME / SECOND economy | Economy | VS | Prototype | [31-alpha-economy-balance-and-playtest-plan.md](31-alpha-economy-balance-and-playtest-plan.md), [08-time-as-currency.md](08-time-as-currency.md) | Reincarnation, Combat, Persistence |

diff --git a/docs/design/14-character-stat-and-relationship-system.md b/docs/design/14-character-stat-and-relationship-system.md
@@ -18,6 +18,9 @@ authority. It is a design contract, not a final combat spreadsheet.
 For alpha implementation details such as stat ranges, body archetype budgets,
 skill slots, first body kits, and skill validation, see
 [39-alpha-stats-and-skills-design.md](39-alpha-stats-and-skills-design.md).
+For body level, XP thresholds, stat points per level, and derived-stat
+recompute rules, see
+[57-alpha-level-core-stat-progression.md](57-alpha-level-core-stat-progression.md).
 
 ---
 

diff --git a/docs/design/39-alpha-stats-and-skills-design.md b/docs/design/39-alpha-stats-and-skills-design.md
@@ -13,6 +13,9 @@ without replacing it.*
 For carryover rules after body loss, body imprint loss, learned skill survival,
 equipment gates, and soul-body sync, see
 [40-soul-skill-carryover-and-sync.md](40-soul-skill-carryover-and-sync.md).
+For body level, XP thresholds, body stat points, derived-stat recompute, and
+inventory stat requirement handoff, see
+[57-alpha-level-core-stat-progression.md](57-alpha-level-core-stat-progression.md).
 
 ---
 
@@ -111,6 +114,11 @@ Alpha formula rule:
 > Use simple transparent formulas first, then move constants into data once
 > combat feel is stable.
 
+The alpha level and XP packet fixes the first implementation defaults: level
+cap 15, 3 body stat points per current-body level, no automatic
+plus-one-to-all-stats growth, and a fixed XP table. See
+[57-alpha-level-core-stat-progression.md](57-alpha-level-core-stat-progression.md).
+
 Example direction:
 
 ```text

diff --git a/docs/design/40-soul-skill-carryover-and-sync.md b/docs/design/40-soul-skill-carryover-and-sync.md
@@ -17,6 +17,9 @@ SECOND SPAWN should not treat every skill as a body stat. A person learns
 through memory, timing, habit, judgment, and repeated use. The current body then
 decides how well that knowledge can be executed.
 
+For current-body level, XP, and body stat point loss on reinhabitation, see
+[57-alpha-level-core-stat-progression.md](57-alpha-level-core-stat-progression.md).
+
 The practical rule:
 
 > Physical stats mostly belong to the body. Learned skills can belong to the

diff --git a/docs/design/45-inventory-and-equipment-system.md b/docs/design/45-inventory-and-equipment-system.md
@@ -8,6 +8,10 @@ This document complements `39-alpha-stats-and-skills-design.md`,
 `40-soul-skill-carryover-and-sync.md`, and
 `46-hunter-nft-skin-escrow.md`.*
 
+For level, core stats, body stat points, derived stats, and equipment
+stat-requirement validation, see
+[57-alpha-level-core-stat-progression.md](57-alpha-level-core-stat-progression.md).
+
 ---
 
 ## 1. Purpose