Fotonica is a first-person, on-rails, one-button platform game (that’s a mouthful) by Santa Ragione. It was released recently as “pay-what-you-want” (minimum of $1.75). The game features 5 levels, two-player splitscreen, and cross-platform online leaderboards. You can try the demo here, on Kongregate.
TIGdb: Entry for Fotonica