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Grim

Also known as Grim, g, grim

A story-driven psychological horror where your choices reshape reality and lead to multiple endings.

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Last update

2 Jun 2026

Latest update

AnnouncementPublished 23 Mar 2026

Devlog #2: On the Weight of Guilt and the Interactive Experience

Hi. It’s been a few days since we launched the browser fragment of Liza's chapter. The main question we’re facing right now is: how should we end this chapter? We want to convey the drama of the moment when Liza hits a…

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Update history

Browse past updates and patch notes for this game.

3 updates

March 2026
Liza's chapterHi! We've created a playable demo of Lisa's chapter, and we'd like to give you the opportunity to try out the game for yourselves right now. Follow this link to try out the demo: https://thunderdum.github.io/thunderdum/…Announcement12 Mar 2026
November 2025
🕯️Hi everyone! 🕯️ We've just updated a demo of Grim. It now includes an FPS Quest Chapter - a surreal, first-person fragment where the boundaries between fear and reflection dissolve. Step into the depths of protagoni…1 changePerformancePatch notes04 Nov 2025

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Devlog #2: On the Weight of Guilt and the Interactive Experience

March 2026

November 2025