Portals Over Earth
2 - One By One
3 - Rise Of The Abyss
4 - Invadorz
5 - Sergeant Steel
6 - This Must Be The Mothership
7 - Countries Burning
8 - Start Again
9 - The Day The Sky Opened
10 - Blood Of The Titan
11 - Sweet Rampage
12 - Locating The Core
13 - Steel Messenger
14 - Killing Spree
15 - Massive Outbreak
16 - Special Unit
17 - Echoes And Ashes
18 - Hard Rain
19 - The Purifier
20 - First Incident