The wiki knowledgebase for all that is Aeria Games. Grand Fantasia Warriors Online • Kitsu Saga • Metal Assault • Twelve Sky • More Closed-down Games. Aeria Games, formerly known as Aeria Games and Entertainment, is an online game publisher. Shaiya – Fantasy MMORPG; WolfTeam – Sci-Fi FPS; Grand Fantasia Twelve Sky – Martial Arts RPG; Twelve Sky 2 – Martial Arts RPG; Metal Assault – Platform Shooter; GunZ: The Duel - Third Person Shooter; Golden Age. Metal assault was previously published by AERIA games and is a 2d side scroller shooter game. In its old days this game was something else entirely. The closed beta date for Aeria Games' Metal Assault has been set: April 1. Closed beta registration is still being accepted at the game's official. Metal Assault is a free-to-play 2D side-scrolling shooter, featuring modern military equipment, Nic (Nilax) van't Schip Previews Aeria Game's Metal Assault. Metal Assault is an online shooter based on old 2D console games. This action game has 2D graphics similar to those we can see in 80s retro.