In development cloud Game Boy emulator based around the TAS-centric emulation core "gambatte" which is being maintained for use in Gambatte-Speedrun and BizHawk. Web UI written in the T3 Stack with Discord auth integration used to enable cloud hosted game saves and emulator savestates.
Upload a Game Boy or Game Boy Color ROM, along with a copy of the Game Boy Color BIOS, often called gbc_bios.bin - The BIOS is necessary due to the accuracy focus of the emulator. Once those are uploaded, the game can be played using keyboard controls, which can be remapped to your liking in the options menu. Likewise controller input is usable over the Gamepad API and remappable in the options menu. During gameplay you can minimize the options menu by clicking "hide options".
T3Boy uses Posthog to collect fully anonymized and GDPR compliant page view information to best understand how much active use it sees, allocate maintenance, and see which sources are referring traffic.
The T3Boy project uses a GPL v3 license. Gambatte-core, the emulation core T3Boy is based on, uses a GPL v2.0 license with a version upgrade clause enabling its use under GPL v3.
You can find the author TiKevin83 on Discord, YouTube, Twitch, and Patreon.