General

• check the available Jams
• how to make good small games
• gamedev map

From the the GDC vault

• building a better jump
• stop getting lost: make cognitive maps, not levels

Code-related

• The guide to implementing 2D platformers
• A* pathfinding for beginners by Patrick Lester
• the absolute minimum you should know about unicode
• about the uses of the Bresenham algorithm ( pseudocode on wikipedia )
• what you should know about gamma
• ditherpunk : about monochrome image dithering
• easing functions
• a good article ( with code ) about catmull-rom splines

about Scrolling Shooters ( aka STGs or "shmups" )

• shmups wiki
• ^^^ expecially Boghog's bullet hell shmup 101
• The Electric Underground has some very in depth critique of various shmups game design

Bitmap fonts selection

• fairfax
• greybeard
• pixolde
• typecast

Accessibility

• atkinson hyperlegible font, for a file working in love2d take it from google fonts
• opendyslexic font

Engines and frameworks:

• defold
• godot engine
• love2d
• raylib

Smaller Engines

• bitsy
• decker
• downpour
• pico8
• uxn