Roblox game systems that never lose saves or Robux
Studwright is the boring, critical part of a Roblox game done right: player data that is session-locked so two servers cannot overwrite each other, purchase receipts that are never granted twice, plus codes, daily and playtime rewards, leaderboards, loot tables with pity, inventory, currency and rebirths, remote guards and cooldowns. Drag in the .rbxmx or use the Rojo project; an example simulator server shows every module working together.
The 16 modules
| Module | What it does |
|---|---|
| SaveData | session-locked player data with retries and stale-lock takeover |
| Receipts | ProcessReceipt that never double-grants |
| Codes | redeemable codes with expiry and limits |
| DailyRewards / PlaytimeRewards | streaks and timed rewards |
| Leaderboard | OrderedDataStore leaderboards |
| LootTable | weighted drops with pity |
| Inventory / Currency | items, stacks, currencies, rebirths |
| RemoteGuard / Cooldown | rate-limit and validate remotes |
| StateMachine / Spring / Signal / Cleanup / Format | game-feel and plumbing helpers |
Source: Studwright kit contents and test results (66 Luau tests passing), 1 Oct 2026.
Studwright vs the alternatives
Published prices, each checked on the date shown; prices change, so confirm on each site.
| Product | Price | Free | Checked |
|---|---|---|---|
| Studwright (16 systems) | $12 once (75 cents a system); $18 bundle | Signal, Cleanup, Format + in-browser playground | live |
| RBLX Essentials: Roblox Codes System Kit (itch.io) | $4.99 or more (one system) | – | 2026-10-01 |
| RBLX Essentials: Time Rewards System Kit (itch.io) | $4.99 or more (one system) | – | 2026-10-01 |
| RBLX Essentials: Leaderboards & Leaderstats (itch.io) | $7.99 or more (one system) | – | 2026-10-01 |
| varundeveloper: Roblox Inventory System (itch.io) | $20.00 or more (one system) | – | 2026-10-01 |
Why teams pick Studwright
- Tested like real software: 66 tests in a real Luau VM, including two servers fighting over one save, DataStore outages and retried receipts.
- Session locking and receipt handling, the two places Roblox games most often lose data or Robux.
- 16 systems for $12 (75 cents each); one system elsewhere costs $4.99-$20.
- Original code with a clear licence for your games; the tests ship in the zip.
How it works
- Buy on Polar; the zip downloads at once.
- Drag Studwright.rbxmx into ServerScriptService (or add the Rojo project).
- Start from the example server and keep the modules you need.
FAQ
Is this allowed on Roblox?
Yes. It is ordinary Luau using Roblox's own DataStoreService and MarketplaceService; nothing bypasses Roblox rules.
Why not free models from the Toolbox?
Many work, but few are tested against two servers saving at once or retried purchases. Studwright ships the tests so you can check.
Is CyberMax affiliated with Roblox?
No. Roblox is a trademark of Roblox Corporation; Studwright is an independent developer kit.