Arcade Metal 4

Metal is a game to download that have the best slug in old games.
Neo game play with new characters from different geo, attack and tactics.
Somme commander are advance in attack and defense, the game is an anthology of multiple missions.
It's considered an Arcade game of type run and gun shoot them up.
This game can be played offline, for free and it's the original version.
You can use some cheats if you know them
Supports saving.