I and a friend are on the same boat. I think if you really can't try the game you have to be open and consider a time to 'catch' it yourself. We buy and and play games that looks good. Most of them are. Few aren't, but you have to be prepared that a given mechanic didnt catch with you, even games considered awesome.
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I take a very long-winded approach. I try to find a copy of the rules online, and then read through it (which is the first thing I would do if I had gone out to buy the game).
Then, instead of watching a review, I try to find a play through video to see how it plays out. The video isn’t completely devoid of colorful commentary or random banter, but it does give me a realistic expectation of how long the game truly takes.
I generally know whether I’d appreciate a game or hate it from reading the rule book. The video just saves me the cycle of buying, trying, and returning if I’m on the fence.
It doesn't work all the time. Troy dices is a wonderful game, yet I have watch many reviews and had to read the rules many times before understanding what the game was expecting from me. And it's only at the end of the game that things clack and I instantly wanted to play another round.