nullbolt.com

What It Is

Null Bolt Studio is a one-person studio focused on building runtime systems and editor tools for Unity. It is not positioned as a general-purpose SaaS product, but as a source-included asset library for Unity developers. The site emphasizes that “the code is the product”: no DLLs, no telemetry, no network callbacks, and support emails are promised to be answered personally by the author within two business days.

Core Capabilities

The current catalog mainly includes two assets: Grid Inventory System and ItemGenerator. Grid Inventory System is priced at USD 29.99 and targets Unity 6. It is a ScriptableObject-driven, Diablo-style grid inventory system covering complex logic such as multi-slot items, rotation, stacking, storage, shops, and saving, with full source code, sample scenes, and editor tools included. ItemGenerator is listed at USD 0 and is designed for runtime procedural loot and item generation, compatible with Unity 2022.3 and Unity 6.

Pricing and Licensing

The pricing model is straightforward: Grid Inventory System is a one-time purchase at USD 29.99 and is marked with the Standard Asset Store License; ItemGenerator is free. The main copy does not disclose payment methods, refund policies, or team/enterprise licensing details, so buyers should still refer to the actual purchase page before procurement.

Pros and Cons

The main advantages are that source code is included, with no DLLs and no telemetry, making the assets easier to audit, debug, and deeply customize. For indie games or small teams, having extensible source code directly available is safer than relying on a black-box plugin. The author’s commitment to human email support also adds more certainty to communication. The limitations are that the product line is currently very small, and being a one-person studio naturally caps the pace of updates, long-term maintenance capacity, and responsiveness to complex requirements. While there are documentation entry points and sample scenes, the crawled content does not show the depth of the documentation, so it is not possible to assess it with high confidence for now.

Who It’s For and Access from China

It is suitable for game developers using Unity 6 or Unity 2022.3 who need an inventory system or item generation infrastructure, especially teams that care about source-code control, privacy, and maintainability. The main copy does not provide information on access from China. If purchased through the Unity Asset Store, availability may be affected by platform access, payment options, and network conditions. Alternatives include other inventory/item system assets on the Unity Asset Store, or building the corresponding modules in-house.