Felix The Reaper is a challenging and strict 3D puzzle game about bringing humans into deadly situations. It's an indie adventure game developed by Kong Orange and published by Daedalic Entertainment in 2019. You are Felix, the ever-dancing bringer of death, who just so happens to be dangerously in love with Life.
The system requirements are lightweight; nearly any new laptop will work for playing FTR.
The RAM requirement of 4gb is easily met.
Also, note that at least 4.6gb of disk space is necessary.