First game in that franchise cost only $1.49.
The "Shelter" franchise for the is on sale for up to 85 percent off on GOG.com as part of their "Weekly Sale."
Shelter - $1.49 (85% off).
Shelter 2 - $3.74 (75% off).
Shelter 2 Special Edition - $4.24 (75% off).
The GOG versions of those titles is DRM-free and compatible with select Windows, Mac and Linux operating systems.
Image credit: GOG.com