Buying habits
Try a Demo With a Clear Goal
Decide what you want to learn from the demo, such as how movement feels or whether you can read the interface comfortably.
Start with the practical details
Notice what the demo actually includes. A tutorial section may differ from a normal level or later chapter.
Make the plan flexible
Check whether progress carries over if that matters to your choice. Use the publisher's current information for the specific edition.
Try this on your next trip
After playing, write down what you liked and what remains uncertain before deciding.