The warning follows an announcement by fan team Blast Processing Arcade that its Mega Drive (Sega Genesis) port of GG Aleste 3 is "100% complete" and reportedly tested on original hardware.
Background: GG Aleste 3 first appeared in 2020 as a newly developed entry bundled with M2's Aleste Collection for PlayStation and Nintendo Switch.
Although the game was coded for Sega's Game Gear handheld, no standalone or official physical cartridge was ever released; players who wanted to run the title on original Game Gear hardware relied on a ripped ROM.
Earlier this year, modders led by Morb ported GG Aleste 3 to the Master System (June 2026), and Blast Processing Arcade's recent Mega Drive build represents the latest fan-led effort to bring the shmup to 16-bit consoles.
Blast Processing Arcade's completion claim: The fan team says the Mega Drive port reproduces the original Game Gear gameplay while taking advantage of the Mega Drive's capabilities.
According to the team, the MD build features a stereo FM YM2612 soundtrack conversion, an updated HUD, an optimised colour palette, S‑RAM saving support and 60 FPS performance with the removal of slowdown and sprite flicker.
The group stated the ROM successfully ran on original Mega Drive hardware and asked followers to "stay tuned" for further news.
M2 response, rewritten: Naoki Horii, president of M2 and rights holder for GG Aleste 3, posted on X that the company is considering new work for the title and expressed concern that public releases of unlicensed fan versions make those official options "impossible." Horii asked followers to help by requesting that fan teams stop progressing without permission.
Community and context: Responses to M2's post on social platforms were mixed; some users argued that an official M2 release would still have a market even if fan ports circulate, while others viewed fan ports as filling a gap left by the lack of an official Mega Drive edition.
M2 has built a reputation for high-quality ports and retro compilations, and Aleste Collection remains available on PlayStation and Nintendo Switch.
This situation highlights ongoing tensions between preservation-minded fan projects and rights holders.
For now, Blast Processing Arcade says the MD port is finished, and M2's public appeal leaves the future of any official Mega Drive release of GG Aleste 3 unclear.