> For the complete documentation index, see [llms.txt](https://kaizo-1.gitbook.io/kaizo-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kaizo-1.gitbook.io/kaizo-docs/lua-engine/unsafe-memory/essentials.md).

# Essentials

The important Unsafe memory functions.

Raw memory is easy to misuse. Prefer SDK when you can.

Writes are queued and need Disable memory writes off.

## unsafe\_memory.module\_base

Game module base address.

[unsafe\_memory.module\_base](/kaizo-docs/lua-engine/unsafe-memory/unsafe_memory.module_base.md)

```lua
local base = unsafe_memory.module_base()
```

## unsafe\_memory.rva

Base plus offset.

[unsafe\_memory.rva](/kaizo-docs/lua-engine/unsafe-memory/unsafe_memory.rva.md)

```lua
local addr = unsafe_memory.rva(0x1234)
```

## unsafe\_memory.is\_mapped

Check if an address looks readable before you touch it.

[unsafe\_memory.is\_mapped](/kaizo-docs/lua-engine/unsafe-memory/unsafe_memory.is_mapped.md)

```lua
if unsafe_memory.is_mapped(addr, 8) then
    log.info("ok")
end
```

## read and write u64

Most common raw number helpers.

[unsafe\_memory u64 get/set](/kaizo-docs/lua-engine/unsafe-memory/unsafe_memory-u64-get-set.md)

```lua
local v = unsafe_memory.read_u64(addr)
unsafe_memory.write_u64(addr, v)
```

## Also useful

* [unsafe\_memory u32 get/set](/kaizo-docs/lua-engine/unsafe-memory/unsafe_memory-u32-get-set.md)
* [unsafe\_memory f32 get/set](/kaizo-docs/lua-engine/unsafe-memory/unsafe_memory-f32-get-set.md)
* [unsafe\_memory.read\_string](/kaizo-docs/lua-engine/unsafe-memory/unsafe_memory.read_string.md)
* [unsafe\_memory bytes get/set](/kaizo-docs/lua-engine/unsafe-memory/unsafe_memory-bytes-get-set.md)


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