Keep an eye on Milestone's patch and update plans. If the company moves forward with customer-friendly moves, HWU may be a must-buy for arcade-racing fans. Until then, wait and see-unless the sales pitch of "Trackmania but prettier and more arcade-y" makes you want to immediately purchase. In which case, you'll have a good time.
Between those mechanical systems and cleverly arranged zones in and around the starting village, Ember Lab makes sure that players have stuff to look for and interesting systems to play with once they discover those puzzles. (And I haven't even mentioned the seriously cool, late-game magical ability that I'm not going to spoil.) By narrowing its magical abilities to only a few pickups, K:BoS emphasizes a simple, accessible path to adventurous treasure hunting. The result is the opposite of a standard "Metroidvania" in which new abilities often do a meager job unlocking new things in old zones. If you're hoping for a massive adventure with 19 different items that each expose new regions, K:BoS doesn't deliver. Personally, I enjoyed its tighter focus, which still opened previously explored regions for further investigation (complete with a handy in-game counter for secrets that have and haven't yet been found).
Aliens fans with friends should buy, as should anyone hungry for a more focused take on online co-op combat (read: less sprawling than The Division). Solo, offline players should tread extremely cautiously. Destiny and Borderlands fans may be unmoved.