if it has an awesome multi player options or really long play time like an RPG like The witcher hint hint. I would buy. Most triple A titles are to short.

The love of the franchise and if the game looks interesting enough

I can never define it. Usually i look for replayability. i really enjoy replaying all the games i have bought so far, even if i know the story and everything i have to do. Also lastly i am looking for honesty from the designer/company side. I don't appreciate lazily designed games with extremely good graphics. I want the developers to respect me and not look only at my wallet.

To be honest, what truly motivates me to buy a game, are the reviews and what I know about it. For example - Assassin's Creed, even although the launch of Unity wasn't exactly according to plan, I still bought it because I love the series.

Me and my brother buy games depending on how the look, the story, the gameplay, and the joy we get from playing them.

I motivate to buy a game because. Its good game and the second one to support the developers because they deserve it  

I buy a game when most of my friends are buying it. I enjoy playing with them a lot

Well the word 'motivates' means a lot to me when to comes to legit games but the thing is i don't have money to buy one!

hopefully, you will give me a chance to play a legit one and be happy to my life!  

HAPPY GAMING!

Good multiplayer or often just i a game looks interesting and fun, i also base my decision on user/professional reviews