Buying advice

The games that got me started were choice of dragons, then broadsides and then imprisoned. I soon stumbled on to the forums and got into unnatural, ze and bfp respectively. ZE would be a good thing to buy, at least for me, It takes like 5 minutes to load the game. I also tremendously enjoyed choice of zombies, I would not mind buying it but It is near the bottom of my videogame shopping list (pokemon X&Y or monster humter 3 ultimate on top) most of the featured games are top short to decide whether to buy it or not