tool_pro was a community-modified version of H1CE Tool which extended the map cache file size limit and vertex buffer beyond their defaults.

Do not use tool_pro! It was found to contain malware that phones home, among other things.

If you need these increased defaults, use invader-build. It supports these modifications natively for more target engines (and does not contain malware).

Hex edits

The following hex edits are required to replicate this behaviour:

  • Change offset 0x53181 from 0x2D to 0x34 (cache size)
  • Change offset 0x54D5A from 0x02 to 0x04 (vertex buffer)

These edits work with OS_Tool as well.


tool_pro was removed from Halomaps after Dennis reviewed it and found it to contain malware that "phones home" during use.


Thanks to the following individuals for their research or contributions to this topic:

  • Dennis (Found malware in the application)
  • gbMichelle (Writing the hex edit guide)