Stumbled upon these whilst perusing the GOG Summer Sale 2022 … ITAD says that these "Apogee Entertainment"-published classic games from the 90's are currently at their all-time historic low prices:
- Rise of the Triad: Dark War - 90% off, A$0.89 (normally A$8.49). ITAD link
- Blake Stone: Aliens of Gold - 90% off, A$0.89 (normally A$8.49). ITAD link
- Blake Stone: Planet Strike - 90% off, A$0.89 (normally A$8.49). ITAD link
- Monster Bash - 90% off, A$0.89 (normally A$8.49). ITAD link
- Secret Agent - 89% off, A$0.79 (normally A$7.50). ITAD link
- Crystal Caves - 89% off, A$0.79 (normally A$7.50). ITAD link
These HD remastered games from the same publisher, are also currently on sale (thanks XyzzE):
- Monster Bash HD - 50% off, A$7.29 (normally A$14.50). ITAD says the all-time low was 75% off, A$3.69
- Secret Agent HD - 50% off, A$5.79 (normally A$11.50). ITAD says the all-time low was 75% off, A$2.89
- Crystal Caves HD - 50% off, A$5.79 (normally A$11.50). ITAD says the all-time low was 75% off, A$2.89. NOTE: already comes packaged with the original Crystal Caves
EDIT: thanks to poopy for pointing out Cosmo's Cosmic Adventures & Hocus Pocus, and thanks to ryf for pointing out Commander Keen Complete Pack - these Apogee-era classic games weren't in my initial post, because of the way they have been categorized and tagged as "belonging" to differently named publisher IDs - "3D Realms" (which was how Apogee Software got rebranded circa 1996-1998 onwards) and "id Software"
- Cosmo's Cosmic Adventure - 80% off, A$1.69 (normally A$8.49). ITAD link
- Hocus Pocus - 80% off, A$1.69 (normally A$8.49). ITAD link
- Realms of Chaos - 80% off, A$1.69 (normally A$8.49). ITAD link
- Wacky Wheels - 80% off, A$1.69 (normally A$8.49). ITAD link
- Commander Keen Complete Pack - 69% off, A$2.29 (normally A$7.45). ITAD link
Blake stone was a classic, so many secrets.