Using RetroArch, you can map the 20 Gun Version to a PlayStation 4 or Xbox controller with virtually zero input lag.
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While Capcom holds the copyright to the code, the Cadillacs and Dinosaurs name is now tangled between Universal (Cadillac trademark) and the Schultz estate. The game has never seen a commercial re-release on Steam, GOG, or modern consoles. Using RetroArch, you can map the 20 Gun
Even with 20 guns, the dinosaurs are neutral. Avoid hitting them when they are "green" so they don't turn "red" and attack you. While Capcom holds the copyright to the code,
The "Cadillacs and Dinosaurs 20 Gun Version" is a modified ROM (Read-Only Memory) of the original arcade game. It is not an official update released by Capcom, but rather a "hack" or "bootleg" created by the passionate emulation community.
"20 Gun" or "Mustapha" editions are usually community-made ROM hacks found on unofficial sharing sites.