Trine 2 - Ah.

Trine 2 is a sidescrolling game of action, puzzles and platforming.

You play as one of the Three Heroes who make their way through dangers untold in a fantastical fairytale world.

Physics-based puzzles with fire, water, gravity and magic; Wicked Goblins; Climb the tallest trees and towers in the enchanted forest!

Join your friends in the adventure: Trine 2 has online co-op.

SUPPORT

Mac system requirements
Operating system: Mac OS X 10.6 Snow Leopard or better
Processor: Intel Mac
Memory: 1 GB RAM
Hard Drive: 1.5 GB
Video: OpenGL 2.0 and Shader Model 3.0 compatible video card with 128 MB shared or dedicated RAM*
Other: Keyboard, Mouse/Trackpad with Secondary click enabled

*Minimum Mac model requirements:
MacBook Mid 2010 (GeForce 320M) or better
MacBook Air Late 2010 (GeForce 320M) or better
MacBook Pro Mid 2007 (GeForce 8600M) or better
iMac Mid 2007 (Radeon HD 2400 XT) or better
Mac Pro Early 2008 (Radeon HD 2600 XT) or better
Mac mini Late 2010 (GeForce 320M) or better

NOTE: Please be advised that Trine 2 does not run on Intel graphics solutions used in 2006-2008. The game does run on new (2010-) Intel HD Graphics 3000 or better. Macs with NVIDIA GeForce 9400M may not achieve smooth gameplay. Radeon X1600 is not supported.

more info

https://itunes.apple.com/us/app/trine-2/id483381002?mt=12

http://www.macgamestore.com/product/2173/Trine-2/

tested on 10.10.5 and 10.11 confirmed working

enjoy