OpenTTD - An open-source clone of the classic game ...
Mad Father - Mad Father is a Role-playing, Puzzle, Adventure, and Single-player video game developed by Sen and published by Miscreant’s Room.
Transport Fever - Transport Fever is an Adventure-based, Management, Strategy, Economy, Sandbox, City-Building and Single-player video game developed by Urban Games and published by Gambitious Digital Entertainment.
Ao Oni - Ao Oni is a Freeware, Horror-Survival, Role-playing, Puzzle, and Single-player video game developed by No props.
Transport Tycoon Deluxe - Transport Tycoon Deluxe is a Business Simulation developed by Chris Sawyer and published by MicroProse.
Corpse Party - Corpse Party is an Adventure, Horror, Visual Novel, Puzzle, Role-playing, and Single-player video game series developed by GrisGris and published by XSeed.