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Kotaku reported that browser-based ports of games including Halo: Combat Evolved, Grand Theft Auto: Vice City and The Simpsons: Hit & Run appeared online and, in the reporter’s tests, ran well. The report attributes the development to AI-assisted decompilation, but the ports’ creators, methods, legal status and continued availability are not established in the supplied material.
Browser-based versions of games including Halo: Combat Evolved, Grand Theft Auto: Vice City and The Simpsons: Hit & Run have appeared online, with Kotaku reporting that several ran well in its tests. The report links the ports to AI-assisted decompilation, a development that could make it easier to reproduce older games, while leaving questions about their creators, authorization and availability unresolved.
Kotaku said it tried several browser ports linked in a social media post and found some to be close to flawless in its experience. The reporter described one version of The Simpsons: Hit & Run as running at up to 240 frames per second, and said one of four Halo: Combat Evolved browser versions tested had working online servers and low ping. These are the outlet’s observations, not independently verified performance measurements.
The post, from an account named Radiant Optimizer and dated October 8, 2026, advertised games playable in a browser without installing them. It named several titles, including Call of Duty: Black Ops, Skate 3, Halo and Modern Warfare 2. The supplied report does not identify the people who made the ports or provide technical documentation showing how each was produced.
Kotaku places the examples amid what it describes as a recent wave of AI-assisted, decompiled games and emulators. It attributes the change to an update called Claude Opus 5.5, which it says can help reconstruct game code faster than traditional manual work. The source material does not include independent testing of that model’s capabilities or confirmation that it was used to create the specific browser ports discussed.
Browser Ports Test Copyright Enforcement
If ports can be created and distributed quickly, publishers may face repeated efforts to copy or recreate games even when individual versions are removed. Kotaku described this as a potential whack-a-mole problem for intellectual-property enforcement. That is the report’s assessment; the scale and durability of the ports have not been established.
The examples also put attention on how older games can run in modern browsers. Kotaku noted that the titles it discussed largely come from the PlayStation 2 and PlayStation 3 era, and argued that browser memory limits are less of a barrier than they once were. For players, browser access could lower the effort needed to try a game; for rights holders, ease of access may increase concerns about unauthorized copies. The report does not establish that these ports are licensed, safe to use or supported by the original publishers.
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AI Decompilation and Older Games
Decompilation attempts to reconstruct human-readable code from a compiled program. Game preservation and porting can involve complex technical work, and the source report says AI tools may reduce some of the time and labor involved. It contrasts this with work that previously could take coders months, but provides no measured comparison or independent account of the process used for these examples.
Kotaku connects the browser ports to other projects it says have recently appeared, including ports of Fallout and Call of Duty: Modern Warfare and a Super Mario 64 mash-up mod. The report characterizes these as part of a broader burst of AI-generated or AI-assisted work. It does not supply a complete inventory, dates for each project or evidence establishing the role of a particular model in every case.
“Some of them seemed to be borderline flawless.”
— Kotaku report
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Creators, Rights and Access Remain Unclear
The supplied material does not establish who built the ports, whether the original game files are required, what assets or code they contain, or whether any publisher authorized them. It also does not confirm whether the sites remain online or whether the reported multiplayer servers are still operating. Kotaku’s observations reflect testing at the time of its report, and performance may vary by browser, device and connection.
The report says publishers’ legal teams could send cease-and-desist notices, but it does not identify any notices, lawsuits or official responses from Microsoft, Take-Two or other rights holders. It is also unclear whether Claude Opus 5.5 was actually used to create the specific ports. The source provides no technical evidence or statement from the model’s developer to confirm that attribution.
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Publisher and Platform Responses
The immediate developments to watch are whether the browser versions remain accessible and whether game publishers or hosting platforms take action. Any removal notices, legal filings or public statements could clarify how rights holders view the projects, but none are confirmed in the supplied report.
Further technical reporting would also be needed to establish how the ports were made, whether they rely on original game data and how consistently they perform. Until those details are available, the confirmed news is limited to Kotaku’s report of playable browser versions and its account of testing several of them.
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Key Questions
Which games were reported as playable in a browser?
Kotaku discussed ports including Halo: Combat Evolved, Grand Theft Auto: Vice City and The Simpsons: Hit & Run. A social media post also listed Call of Duty: Black Ops, Skate 3 and Modern Warfare 2.
Did the browser ports run well?
Kotaku said several ran well in its tests, including one Simpsons version it described as reaching 240 frames per second. That figure and the performance descriptions are the reporter’s observations, not independently verified benchmarks.
Is it confirmed that Claude Opus 5.5 created the ports?
No. Kotaku attributed the broader wave of AI-assisted decompilation to Claude Opus 5.5, but the supplied material does not confirm which tools were used to make these specific ports.
Are the ports authorized by the game publishers?
The supplied report does not say whether the versions are licensed or authorized. It also does not report confirmed legal action or official responses from the publishers.
Can readers still access the browser versions?
The report describes versions linked in a post dated October 8, 2026, but does not confirm whether those links remain live. Their current availability is unclear.
Source: hn
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