As what the title says, you can get all 4 entries in the Red Faction series for 90% off for AU$8.85.
The third entry being one that I have fond memories about. Watch the 2009 Good Game review if you need convincing still on the fun shenanigans that can be had in this game:
https://youtu.be/tcoIIc4Dhb0?t=136
For more info on the series as a whole, see the 20th anniversary write up from GOG:
https://www.gog.com/news/red_faction_celebrates_its_20th_ann…
A Heads up in case some were not aware:
Guerilla has been "re-mars-tered" twice. The first time it was a Steam exclusive. Owners of that version got this more recent version for free when it released. Check your Steam account before purchase if you want to avoid double dipping.
I am double dipping. Hell I am triple dipping, as I originally played Guerilla back on Xbox 360.
Also in case anyone cares about sound tracks, they are NOT included in the bundle discount. I added everything manually to my cart. At the checkout the items listed in the bundle got the extra discount but the soundtracks did not. It was worth a try, eh?
I ended up purchasing them anyway. That extra $4.50 may be the $4.50 that tips Volition (or Deep Silver?) over into deciding to make a Guerrilla 2! (or any new Red Faction) You never know!