Rich Whitehouse, the developer behind BigPEmu, has pushed BigInstinct — his dedicated Killer Instinct arcade emulator — into a beta release for supporters after securing renewed backing.
The project, which aims to provide a faster and feature-rich alternative to existing arcade emulation in MAME, was the subject of a funding setback in March 2025 but has since regained momentum.
Timeline and availability
- March 2025: Whitehouse announced that funding for BigInstinct had been pulled, pausing development.
- Week of 5 May 2025: Whitehouse revealed the project had gathered enough support to continue and that a beta build would be distributed to Patreon backers.
- 4 May 2026 (update): RareUpdate reported that BigInstinct is now available to download, and Whitehouse also published a new version of his Atari Jaguar emulator.
Technical goals and key features
BigInstinct targets the original Killer Instinct arcade hardware and seeks to outperform existing options such as MAME.
Whitehouse has stated he implemented what he believes to be an exceptionally fast MIPS III interpreter, delivering improved frame times compared with MAME running Killer Instinct with a dynamic recompiler.
The emulator also includes advanced multiplayer support and audio options: Whitehouse implemented up to 16-frame rollback for netplay to reduce input latency and introduced a stereo sound script that lets users switch from the arcade original's monophonic output to stereo.
Rewritten developer statements
Whitehouse summarized the build's performance in practical terms, saying his internal tests showed the multiplayer netcode ran smoothly and reliably with no noticeable hitches.
He emphasized that delivering low-latency online play for arcade emulation is uncommon and that the current implementation achieves a level of responsiveness he considers unusually good.
How to access
Interested users can access the beta by backing Whitehouse's Patreon, where early builds and development updates are being distributed.
Whitehouse also posted a demonstration video on YouTube outlining BigInstinct's features and showing netplay in action.
Context for developers and preservationists
BigInstinct is notable within the emulation and preservation communities for its focus on arcade-accurate timing and improved netplay.
By addressing performance at the interpreter level and offering rollback netcode, Whitehouse's work aims to make classic arcade fighting games like Killer Instinct more accessible for modern multiplayer sessions while preserving the original arcade experience.
The project, which aims to provide a faster and feature-rich alternative to existing arcade emulation in MAME, was the subject of a funding setback in March 2025 but has since regained momentum.
Timeline and availability
- March 2025: Whitehouse announced that funding for BigInstinct had been pulled, pausing development.
- Week of 5 May 2025: Whitehouse revealed the project had gathered enough support to continue and that a beta build would be distributed to Patreon backers.
- 4 May 2026 (update): RareUpdate reported that BigInstinct is now available to download, and Whitehouse also published a new version of his Atari Jaguar emulator.
Technical goals and key features
BigInstinct targets the original Killer Instinct arcade hardware and seeks to outperform existing options such as MAME.
Whitehouse has stated he implemented what he believes to be an exceptionally fast MIPS III interpreter, delivering improved frame times compared with MAME running Killer Instinct with a dynamic recompiler.
The emulator also includes advanced multiplayer support and audio options: Whitehouse implemented up to 16-frame rollback for netplay to reduce input latency and introduced a stereo sound script that lets users switch from the arcade original's monophonic output to stereo.
Rewritten developer statements
Whitehouse summarized the build's performance in practical terms, saying his internal tests showed the multiplayer netcode ran smoothly and reliably with no noticeable hitches.
He emphasized that delivering low-latency online play for arcade emulation is uncommon and that the current implementation achieves a level of responsiveness he considers unusually good.
How to access
Interested users can access the beta by backing Whitehouse's Patreon, where early builds and development updates are being distributed.
Whitehouse also posted a demonstration video on YouTube outlining BigInstinct's features and showing netplay in action.
Context for developers and preservationists
BigInstinct is notable within the emulation and preservation communities for its focus on arcade-accurate timing and improved netplay.
By addressing performance at the interpreter level and offering rollback netcode, Whitehouse's work aims to make classic arcade fighting games like Killer Instinct more accessible for modern multiplayer sessions while preserving the original arcade experience.
