Steam playtest
机械之心
A signup control was found on 2026-10-29 09:14. Admission is decided by the developer.
Participation is not guaranteed — access to a playtest is allocated by the developer and the rules can change. How it works · Voluntary support for the site
Heart of Machine blends top-down tower defense with light roguelite elements. Face an evolving mechanical swarm thousands strong, tailor defenses, upgrade towers with chips, and use real-time support weapons to turn the tide. Build an unbreakable line and save the core from destruction.
What a Steam playtest is
A playtest is a test build of a game that developers offer before release. On Steam you sign up for testing on the game's page. Whether you get access immediately, or the developer invites you first, is decided by the developer and can change.
More games with a playtest
This game is part of the Playtest Atlas overview — 3645 games in the catalogue.