What are some alternatives?
When comparing Tenchu: Time of the Assassins and Ninja Gaiden Shadow, you can also consider the following products
Dark Throne - Dark Throne is an Action-Adventure, Role-playing, Pixel-Art, Side-Scrolling and Single-player video game developed by Marcin Mikolajczyk and published by Back To Basics Gaming.
Pony Island - Pony Island developed and published by Daniel Mullins Games.
First Samurai - First Samurai is a Single-player Platform video game developed by Vivid Image and published by Image Works.
Disney’s Aladdin Adventure - Disney’s Aladdin developed by Disney Software and published by Sega.
Castlevania: Order of Ecclesia - Castlevania: Order of Ecclesia is an Adventure-based, Platform, Single and Multiplayer video game by Konami.
Metroid Fusion - Metroid Fusion developed and published by Nintendo.