Terminus 3DO: Retro Love Letter’s New Doom-Style FPS Built Without AI

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The 3DO platform has long been a fascination for retro collectors and homebrew developers.

Conceived in the early 1990s by Trip Hawkins and launched as a licensable hardware format rather than a single console product, the 3DO attracted third-party manufacturers and a distinctive place in gaming history.

The system's commercial life was brief relative to contemporaries from Sony, Sega and Nintendo, but it remains an active target for hobbyist development and new releases.

One of the latest entries in that homebrew scene is Terminus, a new first-person shooter from developer Retro Love Letter designed for the 3DO.

The project surfaced publicly this week with a trailer uploaded to YouTube and accompanying developer notes that detail production methods and technical targets.

Retro Love Letter positions Terminus as a 1990s-inspired shooter that draws on classics in the genre while being built specifically for the 3DO environment.

Retro Love Letter has emphasized that the game's engine and codebase were created without using artificial intelligence.

The developer explained that all core programming was done manually, with textures created by a pixel artist and weapons and objects digitized from custom 3D-printed models.

Screen captures shown by the team were produced using 3D modelling software, and the game uses 3D, quad-based polygons with digitized assets.

On technical details, Retro Love Letter reported that Terminus employs a sector-based engine comparable to DOOM, enabling traversal across multiple maps without perceived level loading.

The developer stated the build supports both NTSC and PAL formats, noting PAL testing has so far been performed via emulation, and that on real hardware the game currently achieves roughly 30 frames per second for most gameplay scenarios.

The project also makes use of trapexit's 3DO development tools.

The developer has attributed part of the project's inspiration to the 3DO title Killing Time and lists voice performer Thessaly Lerner and musician Ed Wilson among contributors.

Retro Love Letter says Terminus is in testing and that a physical release is planned for the future.

Readers interested in updates can follow the developer's posts on Twitter/X for release information and further technical updates.

Terminus underscores the continued vitality of 3DO homebrew development and demonstrates how contemporary indie teams are bringing retro design philosophies to legacy hardware through modern tools and dedicated craftsmanship.

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