Cancelled ports of GTA games on GameCube & GBA
From The Lost Media Wiki
I recently came across these 2 articles detailing cancelled ports of Grand Theft Auto games on the GameCube & GameBoy Advance.
The first article is about a cancelled port of Grand Theft Auto III for the GameBoy Advance: https://www.unseen64.net/2018/01/31/gta-3-gba-cancelled/
The second article is an announcement for cancelled GameCube ports of Grand Theft Auto III & GTA Vice City for the GameCube (Note: Because this is the only evidence I have, these may go under Existence Unconfirmed): http://www.gamecubicle.com/news-nintendo_gamecube_grand_theft_auto.htm