This is quite a unique experience. Merging the progression system made popular by Vampire Survivors, with the aerial combat of Call of Duty's AC-130 missions. Metal Thunder definitely has a fun idea to it.
Read the full article here: https://www.gamingonlinux.com/2025/05/metal-thunder-puts-you-in-a-the-gunner-seat-of-an-ac-130-with-progression-popularised-by-vampire-survivors/