Slay the Spire ($12.79)
https://www.humblebundle.com/store/slay-the-spire
Hollow Knight ($9.98)
https://www.humblebundle.com/store/hollow-knight
Slime Rancher ($11.99)
https://www.humblebundle.com/store/slime-rancher
Torchlight 2 ($4.99)
https://www.humblebundle.com/store/torchlight-ii