Five Stages of Pink is a horror mystery adventure presented in a visual novel / interactive fiction form and it actually looks pretty great. The developer also just put up a Native Linux version if that interests you.
Sir, You Are Being Hunted is a 2013 classic sandbox stealth experience from Big Robot Ltd. They've teamed up with Den Of Thieves Games to bring a huge overhaul to the game and a new Sir, You Are Being Hunted: Reinvented Edition has been announced for 2022.
Shadow Tactics: Blades of the Shogun was one of the best games from 2016 easily, it helped to revive a classic style of tactical stealth games and it's coming back with Shadow Tactics: Blades of the Shogun - Aiko's Choice.