Sublevel Zero wants to be Descent so badly, but modern design elements constantly push that nostalgic feel away.
All in Consumption
Invisible, Inc.
Imagine XCOM with a one hour campaign and a solid stealth system.
Surviving the Trough - Volume 1
If your mood swings, sometimes you just need to tide yourself over until things pick back up. These have been more or less working for me.
Ori and the Blind Forest
Ori and the Blind Forest is the best 2D platformer since Super Mario World. It is beautiful; it is satisfying; it is freeing.
