Tech riderRev. 21 Sept 2026
Viciious
- 1Runs onLinux, Web
- 2CostsNot stated by the maker
- 3Supported platformsWeb browser; Node.js terminal
- 4Disk and tape formats.t64, .d64, .tap, .prg, .sid, .json snapshots
- 5Built-in debuggerYes
- 6Emulated C64 variantsPAL Commodore 64
- 7Bundled software libraryYes
6 lines stated Written from the maker's own pages: luxocrates.github.io

Overview
Viciious is ranked #11 of 30 in Commodore 64 emulators on Specifiction. It runs on Linux, Web.
Compared on Commodore 64 emulators
- Free plan
- Yesluxocrates.github.io
- Supported platforms
- Web browser; Node.js terminalluxocrates.github.io
- Disk and tape formats
- .t64, .d64, .tap, .prg, .sid, .json snapshotsluxocrates.github.io
- Built-in debugger
- Yesluxocrates.github.io
- Emulated C64 variants
- PAL Commodore 64luxocrates.github.io
- Bundled software library
- Yesluxocrates.github.io
Facts
- Product
- Viciious is a JavaScript Commodore 64 emulator for web browsers and terminal emulators.github.com · 2 Oct 2026
- Purpose
- The project says it was written for tinkering and playful exploration of Commodore 64 hardware and software.github.com · 2 Oct 2026
- Graphics
- It emulates the VIC-II graphics chip and supports 320×200 graphics in 16 colors.github.com · 2 Oct 2026
- Audio
- It emulates the SID synthesizer with three simultaneous voices, each with a nine-octave range.github.com · 2 Oct 2026
- Programming
- It includes a BASIC programming environment and an inbuilt half-assembler for writing 6502 opcodes as inline JavaScript.github.com · 2 Oct 2026
- File loading
- In the browser, users can drag and drop .t64, .d64, .tap, .prg, and .sid files into the window.github.com · 2 Oct 2026
- Visual tools
- It offers real-time scopes that visualize machine activity, including sprite-generated pixels and device access to RAM.github.com · 2 Oct 2026
- Distribution
- The emulator distribution is a self-contained HTML file that does not access the Internet and runs serverless.github.com · 2 Oct 2026
- Node.js
- The emulator can be built as a Node.js bundle and run with a regular terminal emulator for input and output.github.com · 2 Oct 2026
- Emulation limits
- It emulates a PAL Commodore 64 in real time but is not cycle-accurate, does not emulate a disk drive, and lacks some features such as sound filtering.github.com · 2 Oct 2026
- Compatibility
- The project says compatibility is incomplete due to emulation limitations and bugs, and snapshot files from versions before v1.0.0 may not be interchangeable.github.com · 2 Oct 2026
- Mobile
- It can run in real time on mobile, but the project says its user interface is unsuitable there.github.com · 2 Oct 2026
- License
- The emulator code and UI assets were authored from scratch and placed in the public domain; the repository notes exceptions for bundled ROMs, tests, and demo programs.github.com · 2 Oct 2026
- File formats
- The browser version accepts .t64, .d64, .tap, .prg and .sid files by drag and drop.github.com · 3 Oct 2026
- Exploration tools
- Real-time scopes visualize machine activity, including sprite-generated pixels and devices accessing RAM.github.com · 3 Oct 2026
- Intended users
- The project says it was written for tinkering and playful exploration of Commodore 64 hardware and software.github.com · 3 Oct 2026
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Where it ranks on Specifiction
- Best Commodore 64 Emulators in 2026#11 of 30
Is Viciious yours?
Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.
Sources
- github.com/luxocrates/viciious· checked 2 Oct 2026