This is a gorgeous book and a great adaptation of the basics of B/X D&D. Easy to run at the table and straightforward character-building and play rules, and the setting is absolutely fascinating.
Haven't gotten to play Wheels on the Road yet, but Pack of Strays: Wolf Run is a great GM-less/freeform game and worth the $5 for the issue. The production values (as with all issues of Codex) are wonderful.
Fusing together the best parts of Whitehack and The Black Hack, Macchiato Monsters is a wonderful game that can be used for all sorts of fantasy action adventures. The GM resources are especially useful, no matter what system you're using.
Awesome, short packets with adventure maps and hints for what you might use to fill them. Like many of my favorite modules, these are almost as much fun to prep as they are to run.