Game Design Library is a hand-curated, catalogued collection of game design links. Learn more
https://www.gamedeveloper.com/design/match-game-mechanics-an-exhaustive-survey
A thorough analysis of all the fundamentally different types of mechanics in Match-3 games: topology (grid shape and size), player actions, match conditions, gravity, block spawning, and auto-match.
A thorough reference of several different styles of cameras in 2D games, and how they work. Covers scrolling, attention, smoothing, snapping, framing, multi-focus, camera shake, and more.