Lightning Fighters

• Title — Trigon • Developer — Konami • Publisher — Konami • Released — June 1990 • Genre — Scrolling shooter • Modes — Single-player, multiplayer • Platforms — Arcade

The player controls the titular spaceship and another spaceship named Super Fighters as they defeat alien enemies while traversing levels. They can collect various power-ups to improve their firepower, including a laser saber and a flaming dragon-shaped projectile, while also avoiding enemy projectiles. One particular power-up is exclusive to the two-player mode, where both spaceships utilize a powerful weapon to defeat large swarms of enemies as long as both stay alive while it is used. A checkpoint system is implemented in the Japanese version after the player loses a live, while the international version allows players to resurrect on the spot.

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 runs the same hardware as the Teenage Mutant Ninja Turtles: Turtles in Time. Hamster Corporation released the game as part of their Arcade Archives series for the Nintendo Switch and PlayStation 4 in August 2020, serving as the game's first re-release outside Japan.