In order for you to play Tiny and Big: Grandpa's Leftovers on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
10.5
Processor (CPU):
Intel Core Duo
Memory (RAM):
2 GB RAM
Graphics Card:
ATI Radeon 2400 or better / NVIDIA 8600M or better
Hard Drive:
1500 MB HD space
In order to play Tiny and Big: Grandpa's Leftovers on macOS with maximum graphics settings, you need a computer with a configuration no worse than the following
Processor (CPU):
Intel Core 2 Duo / Core i5
Memory (RAM):
4 GB RAM
Graphics Card:
ATI Radeon 2800 XT or better / NVIDIA GeForce 9600 or better