Taskful - Deadlines, meet your match.
Dream - The savings lottery where you never lose
Calendarist - Time blocking companion for Google Calendar
Antichamber - "A game with half of the attention to detail and imagination Antichamber has would be a smash hit - this bare-bones first-person puzzler is one of the most thought-provoking, engaging, and challenging video games ever developed.
Gone - An ephemeral to-do list
The Talos Principle - Philosophical first-person puzzle game.