Steam now offers Early Access to Trine 3: The Artifacts of Power, and the platformer sequel carries a 10% discount for the first week, so if you're not buyin', don't blame Trine. Here's the early access trailer they released last week, and here's word on the game:

Frozenbyte has launched Trine 3: The Artifacts of Power on Steam® Early Access. The Steam Store Page is at http://store.steampowered.com/app/319910/. “We're doing a lot of firsts here – our first Early Access, our first full 3D adventure, and our first level editor
release at launch. We hope to get a lot of feedback to make sure we focus on the right things, and we want to involve the community right from the start,” says Frozenbyte CEO Lauri Hyvärinen.

The Early Access period starts with two fully playable Story levels and two non-story related levels. The third Story level will be available in May, and the full version of the game is expected in the fall 2015.

During the Early Access period, players will also have access to “Challenge Levels”, which are new to the Trine series. They are a set of levels which put the player's skills to the ultimate test, featuring crazy contraptions, character-driven level design, and ridiculous puzzles. One Challenge Level is in the Early Access build already, with more coming soon.

A level editor is also included in the Early Access build, as is an experimental “amusement park” level where physics go wild in many crazy puzzles and upcoming level bits. In total, players will be able to try out four different levels on the Early Access launch day.

Trine 3: The Artifacts of Power is available now on Steam Early Access for $19.99 / 19.99€ / £14.99, and a 10% discount is applied during the first week of the Early Access launch.