S = Superb. Games that — for my personal tastes — are the best the genre has to offer. Combat, tone, map design, exploration are all excellent.

A = Amazing. Games that excel in multiple areas or stand out for exceptional ideas, playstyles, or systems.

B = Better Than Most. Games that are good for multiple reasons, be it their maps, exploration, combat, or a combination.

C = Competent. Games that I would consider competently-made, but don't stand out from the crowd. A hefty mix of positives & negatives.

D = Does Some Things Right. Games that did a small number of things that kept me playing until the end, but often had considerable issues.

Games that I've played parts of in Early Access. Tier placement to be determined at full release.

Games I played at least 30 minutes of & keep telling myself I'll go back to one day...

Games I played at least 30 minutes of that I decided weren't for me...

Games that have been released but, for one or more reasons, I haven't played.

Games which are essentially dead: no longer in production or likely never coming out.