Introduction to Alternative Tools: Where to find them! 
Most of these are freely available and ok to use in final projects except where noted. "Retro" tools may require adjusting your computer's compatibility settings.
Brainstorming
- Domino - Idea mapping
- flatpack - Moving around spaces
- Twine - Choice-based Structure
- Clickteam Fusion - Good for drafting game behaviors
- Flickgame - Cause and effect, series of events
- Perilous Shores - Fantasy map maker
Making Games
- Narrative Games
- Exploring Games
- Puzzles & Other Types
- PuzzleScript - Sliding block puzzles with a variety of behaviors
- plingpling - Makes digital pinball tables from drawings
- Adventure Game Studio - Games you navigate by clicking parts of an image
Adding Visuals
- Characters & Sprites
- Picrew - Can be used to mock up character portraits for prototyping, but artwork may belong to the original artists so do not distribute without permission
- Dollmaker and Dress-up Games - Same as above
- Paint of Persia - Make images into pixel art
- Piskel - Make and edit pixel art
- Patternify - Simple tiling sprites
- Public Domain Images (Free to re-use and edit!)
- Fun drawing tools
- Strike - play with monochrome and dithering
- Kid Pix (Retro) - Fun doodling software
- Flying Colors (Retro) - Lots of patterns, clip art, and effects
Adding Sound
- Sound Effects
- Music
Presenting Your Work
- Create an Itch.io Account
- Create a Neocities account
- Zonelets Start Up Guide
- Make a Zine in Electric Zine Maker
Collaborating
Finding More tools
- Itch.io search - Filter by Tools or Resources, or enter tool names (like "Bitsy") as tags
- Unity Plugins
- Flatgame Maker
- Doodle Studio 95 (Paid but lots of options for doing hand drawn animation in Unity)
- Nathalie's List (big)
- Everest's List (even bigger)