Hammer++

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

WeightsClosed

About

Hammer++ is ranked #4 of 27 in game level editors on Inferse. It runs on Windows. There is a free plan.

Compared on game level editors

Free plan: Yesficool2.github.io
Level dimensions: 3dficool2.github.io
Tilemap tools: Noficool2.github.io
Terrain tools: Yesficool2.github.io
Entity placement: Yesficool2.github.io
Prefab or template tools: Yesficool2.github.io
Visual scripting: Noficool2.github.io

Facts

Purpose: Hammer++ is a free modification of Valve’s Hammer editor for the Source engine, intended to be more stable and up to date, with bug fixes and improvements.ficool2.github.io · 28 Sept 2026
Lighting preview: It can simulate Source lighting inside the editor with configurable quality and speed and dynamic updates.ficool2.github.io · 28 Sept 2026
Visual previews: The editor can preview particles, fog, skyboxes, rope physics, render effects and material proxies.ficool2.github.io · 28 Sept 2026
Mapping tools: Features include a 3D gizmo, polygon and sprinkle tools, multiple cordons, brush merging and object placement on floors or ceilings.ficool2.github.io · 28 Sept 2026
Crash recovery: If Hammer++ crashes, it displays a detailed error message and autosaves open VMF files.ficool2.github.io · 28 Sept 2026
File compatibility: Hammer++ saves precise vertex data in VMF files while also saving imprecise data for compilers and compatibility with other Hammer versions.ficool2.github.io · 28 Sept 2026
Keybind limits: The keybind editor cannot assign mouse bindings, and modifier keys may not work for every binding.ficool2.github.io · 28 Sept 2026
Integrations: The download page says HLMV++ is bundled with downloads and can be optionally installed.ficool2.github.io · 28 Sept 2026
Support: The maker directs users to the official Discord to discuss Hammer++.ficool2.github.io · 28 Sept 2026
Download status: The download page lists build 8871, last updated April 14, 2026.ficool2.github.io · 28 Sept 2026
Antivirus issue: The maker says downloads are sometimes marked as malware by antivirus software and advises allowing them or adding an exception.ficool2.github.io · 28 Sept 2026
Compatibility limits: The page says the old Source 2013 Multiplayer version is unsupported and CS:GO support is frozen on build 8864.ficool2.github.io · 28 Sept 2026
Maker affiliation: The site says Hammer++ is not affiliated with Valve Corporation.ficool2.github.io · 28 Sept 2026