I'll go with Portal. It's a classic, the portal are original, there are actions, platforming and puzzles. The second game add even more gameplay elements to the mix.
I'll add Resonance of Fate. Once you learn the combat system, it's a blast to play it. The only thing is, when you learn how to play it, there's a lot of repetitivity since they give you all the gameplay right at the beginning.
I'll add Resonance of Fate. Once you learn the combat system, it's a blast to play it. The only thing is, when you learn how to play it, there's a lot of repetitivity since they give you all the gameplay right at the beginning.