search sprite sight, then
click the link to copy
in the editor, scroll down on the sidebar and click the + extensions tab
then paste in your link and enter!
I highly, highly, highly recommend you use extensions they’re honestly amazing
some must haves from the default list^
there’s also a bunch NOT on this list, many made by forum members, you can find them in the website that @UnsignedArduino (the goat

i recommend:
for visuals
extra effects
lantern / multilights (fixed version by @WoofWoof!)
scaling (default one is an outdated vers iwith no rotation blocks, use awesome arcade to get updated vers (btw do NOT use this vers it’s algorithm is much worse than the scaling ext))
premum life
fancy text (supports custom fonts!))
for code
sprite util (lots of very useful maths and drawing to screen blocks)
mini menu
better arrays and better settings
block objects (tutorial here by @Sarge!)
fast random blocks
stats (smol ext for debugging and such)