WARNING: Reviews contain spoilers!

Rating scheme:

S	Exceptional	This game changed my life. It is not only enjoyable, but goes above and beyond to provide a transcendent experience. There are no significant flaws in controls, pacing, player feedback, level of agency, characters, or audiovisual design, and the game has some element or multiple elements that do something truly special. Overall, I will insist you play this game.
A+	Perfect	The game is enjoyable, and provides good entertainment, intellectual stimulation, emotional exploration or catharsis. Gameplay is well worth the time invested, and provides either a complete experience or a desire to return. There are no major flaws in controls, pacing, etc, and any existing flaws are localised or mitigated by other aspects. Overall, this is a game I would consider essential.
A	Essential
A-	Superb
B+	Great	The game is fun and/or rewarding to play, but has a few flaws that dampen the experience; for example, the controls may be occasionally awkward, the game may have intermittent or localised technical issues, the game may be disappointingly paced, and so on. However, the game still rewards the time you spend playing it, and reaching the conclusion still feels satisfying. Overall, I would recommend playing this game.
B	Really Good
B-	Good
C+	Pretty Good	There is a core of a good game here that is enjoyable and rewarding, but it has some unavoidable flaws that affect but don't ruin the experience. It may have one or two very significant issues, or there may be failings in multiple areas - either way, it is impossible not to notice these issues. It is a game you would probably want to finish, but not return to. Overall, this is a game I would softly recommend.
C	Okay
C-	Okayish
D+	Not Great	This is not a good game. The flaws - which may include uncomfortable or unresponsive controls, significant balance, difficulty, or pacing issues, frustrating technical flaws, or disappointing audiovisual design - are more noticable than the positives. Completing the game is a slog, and it does not feel like the game rewards your time or effort. Overall, this is a game I would consider skipping.
D	Bad
D-	Really Bad
F	Terrible	This game is simply awful. It is not fun to play, it does not respect the player or their time, and trying to complete it feels like you are fighting the game the entire journey. Controls may be unplayably bad, the game may have game-breaking technical issues, or gameplay may be laughably unbalanced, for example. Overall, this is a game I would avoid.
F-	The Worst
Reviews for older games are primarily based on a retrospective view (i.e. are they worth playing now?) while also taking into account their significance historically and their position in the ongoing development of the franchise. (Borrowed and modified from the BMBS (Brutalmoose Broadcast System))