In order for you to play Trine 2: Complete Story on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
OS X version Lion 10.7, or later. Note that Trine 2 only works on a 32-bit operating system.
Processor (CPU):
Intel Mac
Memory (RAM):
1 GB RAM
Hard Disk Space:
4.0 GB
Video Card:
NVIDIA GeForce 8600M or better / ATi Radeon 2400 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 or ATi Radeon X1600 may not achieve smooth gameplay.
Additional:
Keyboard, Mouse/Trackpad with Secondary click enabled