Trigon (トライゴン) is a 1990 vertical-scrolling shooter arcade video game developed and published by Konami.
In Japan, Game Machine listed Trigon on their June 15, 1990 issue as being the fifth most popular table arcade unit at the time.
Gradius Gaiden features a boss modeled after the ship and weapons from the game, and Yu-Gi-Oh!
cards such as "Trigon", "Delta Tri" (based on the mentioned Gradius Gaiden boss), and "Dragon Laser" also represent the game.
It was eventually released for the first time as part of Hamster Corporation's Arcade Archives series for the Nintendo Switch and PlayStation 4 on August 20, 2020.