Roblox systems that never lose saves

Roblox game systems that don't lose saves or Robux. 16 tested Luau modules for what nearly every experience needs: session-locked saves, purchases that never double-grant, codes, daily and playtime rewards, leaderboards, egg rolls with pity, inventory, currency, rebirths and remote guards. Drag one file into Studio.

Run the free modules in your browser first, and keep 3 of them: CyberMax hub/studwright/index.html

The 16 modules

• SaveData: session lock (one server owns a save, so fast server hops can't duplicate items), UpdateAsync only, retries with backoff, template reconcile, numbered migrations, autosave, save on leave, BindToClose flush, Erase(userId) for deletion requests
• Receipts: a ProcessReceipt handler that answers PurchaseGranted only after the save holding that PurchaseId succeeded, and never grants twice
• Codes (once per player, expiry, level gates, brute-force throttle), DailyRewards (UTC streaks, reset hour, grace days), PlaytimeRewards
• Leaderboard: leaderstats sync + global OrderedDataStore top lists with throttled writes and huge-number encoding
• LootTable (weights, luck, pity, odds text for paid random items), Inventory (stacks, slots, equip, DataStore-safe shape), Currency (multipliers, safe spending, rebirths)
• RemoteGuard: token-bucket rate limits + type checks that reject NaN, inf, wrong types, long strings, extra args and oversized tables
• Cooldown, StateMachine, Spring, plus Signal, Cleanup and Format (free)

What's in the zip (75 KB)

Pricing: $12 one-time, about 75 cents a system. Single-system kits on itch.io cost $4.29 to $20 each (prices seen 1 Oct 2026: codes $4.99, time rewards $4.99, leaderstats $7.99, pet system $14.99, inventory $20). Builder Bundle: Studwright + Glintpane (77 game icons + 9-slice UI kit) + Blipwren SFX (120 game sounds) for $18 instead of $25: CyberMax hub/studwright/index.html

FAQ

• Why not a free library? Free libraries are great for one job (ProfileStore is a popular free choice for saves). Studwright is the whole everyday set in one style, wired together, with tests and an example server.
• Does it include UI? No, it's server and shared code. For icons, buttons and panels see Glintpane or the Builder Bundle.
• Rojo, strict mode? Rojo project included; modules use modern Luau and run in Roblox's default type mode.

Licence: royalty-free in unlimited Roblox experiences, including ones that earn Robux and DevEx, for yourself or clients, no credit needed. Don't resell or share the modules themselves. One-time purchase, instant download. © 2026 CyberMax. Roblox is a trademark of Roblox Corporation; Studwright is not affiliated with or endorsed by Roblox.