can we test any game before buying from amazon?

Yes, Amazon does offer a "try before you buy" program called Prime Gaming, which allows Prime members to download and play a selection of games for free before deciding whether to purchase them. This can be a great way to test out games and make sure they're a good fit before committing to a purchase.

Keep in mind that the selection of games available through Prime Gaming may vary over time, and not all games will be eligible for this program. However, it's still a useful tool for discovering new games and trying them out without any financial risk. As well you can test from this site.

I hope this information helps! If you have any further questions, please don't hesitate to ask.