Turing Complete 2.0 swaps Godot for a custom engine

LevelHead has replaced the Godot engine in Turing Complete with an in-house engine and a custom compiler, according to the Turing Complete 2 patch notes posted on Steam on July 14, 2026. The developer describes the update as a major rewrite that took years to complete. The rewrite touches nearly everything, from circuit simulation to the levels and the score server.

What changed under the hood

The patch notes list five behind-the-scenes changes. Godot was replaced with LevelHead’s own game engine, a custom assembly framework was created, a custom compiler was built, and every level and component was reimplemented. The score server was also rewritten because the old one kept crashing. In an earlier post, the developer said the compiler is essential for custom levels and fast simulation. The notes claim simulation speed is now 100x faster, and because of the compilation speed, most levels with 16 bits or less are tested exhaustively.

New features for players

Almost all components now support bit widths between 2 and 64. The update also adds a new assembler system, a new screen component, RAM with big and little endian support, a hex editor mode, a punch card mode, and an in-game hint system that shows hints and solutions for all levels. The LEG architecture was replaced with a more advanced one, and component shapes were updated for consistency.

In a February 2025 status update, the developer said version 2.0 supports user-created campaigns and a more realistic campaign covering modern CPU concepts such as superscalar execution, pipelining, and speculative execution.

Saves and Early Access status

Saves from the new version are incompatible with the old one. Players midway through the campaign can stay on the old version by switching to the old_version channel in the game’s Steam properties. The developer wrote in February 2025 that the aim is to include all needed breaking changes in this patch, and that this will hopefully be the last time player circuits break.

Turing Complete remains in Early Access on Steam, where it launched on October 2, 2021. The store page says the game will exit Early Access in 2026, and the developer says polishing the game comes first. The game is available on Windows, macOS, and Linux for $19.99.