INFA2
From FreeSpace Wiki
INFA2 can mean one of the following things:
- Inferno: Alliance Standalone, wrongly refered to as INFA2 because it's intended to replace the old Inferno: Alliance, or INFA
- Inferno: Alliance 2, sequel of INFASA and prequel of INF SCP. This is the only Inferno mod that should be refered to as "INFA2".