GTA was released for different platforms such as MS-DOS, Windows and PlayStation. However, the most inconspicuous of them, and very unlike them, is the Game Boy Color version. A lot of things were cut in it in order to release the game on portable consoles of that time. The release of the portable GTA1 took place in 1999, the development of this version was carried out by Tarantula Studios.
The archive contains two ROMs: Rom of the American version and ROM of the European version. If you do not have the skills and means to write GBC-roms to GBC cartridges, or you do not have GBC at all, then you can run the game through any available GBC emulator (I think this is the most obvious option).