Google drawing game: https://quickdraw.withgoogle.com/
Color matching game: https://color.method.ac/
Color blindness test: https://www.xrite.com/hue-test
Timed color game: https://www.kuku-kube.com/
Timed color game 2: https://kuku-kube2.com/
The Boolean Game: https://boolean.method.ac/
Pixel Game: https://pixact.ly/
Hex Code Game: http://www.hexinvaders.com/
What Came First? https://artsandculture.google.com/experiment/what-came-first/ZQGBUPErEE3bVg?hl=en
3d Pottery: https://artsandculture.google.com/experiment/3d-pottery/nwHg1D0riJ1ltA
Colorfle: https://colorfle.com/practice/
What the Art? https://g.co/arts/3mgS4pZd18kGNH9e7
Blookets:
Famous Art Blooket: https://www.blooket.com/set/61421b89392e83002aa47736
Color Theory Blooket: https://www.blooket.com/set/60a524bc4b75dc002237a2a3
Elements of Art Blooket: https://www.blooket.com/set/61435fc48b598c002afcc863
Art 1 Benchmark: https://www.blooket.com/set/6144a7667ff029002f796299
2D art:
https://canvas.apps.chrome/ (drawing)
https://sketchpad.app/en/ (drawing)
https://sumo.app/paint/en (drawing)
https://kleki.com/ (drawing)
https://www.canva.com/ (graphic design)
https://www.pixilart.com/draw (pixels)
https://www.remove.bg/ (background remover)
Video/animation
https://app.cloudstopmotion.com/animate/welcome/projects (stop motion)
https://www.piskelapp.com/ (pixel animation)
https://brush.ninja/ (animated gifs)
https://www.wickeditor.com (animation and game design)
https://wave.video/videos (video editing)
https://www.wevideo.com/ (video editing)
https://sketch.metademolab.com/canvas (animate a drawing)
https://studio.code.org/s/csd3-virtual (code animation/games)
3D art:
https://www.tinkercad.com (Tinkercad *3-D printer* )
https://forms.gle/5nJzF5ZCBeD5Eqdq9 (submit 3D designs to print)
https://stephaneginier.com/sculptgl/ (3D rendering)
https://planner5d.com/e/ (room design)
https://www.vectary.com/ (3D design)
Generators/AI:
https://coolors.co/ Color scheme generator
https://www.webfx.com/web-design/random-color-picker/ Color generator
https://this-person-does-not-exist.com/en Face generator
https://thisartworkdoesnotexist.com/ Art generator
https://app.wombo.art/ AI Art
https://www.mapcrunch.com/ Random street view
https://scribblediffusion.com/ AI art from drawings
Tutorials: