Please link any useful resources in this thread!
I'll get started with some links to commonly used game engines and tools:

• Unity 3D (Free/Personal edition) - https://store.unity.com/download?ref=personal
  
• Unreal Engine - https://www.unrealengine.com/en-US/what-is-unreal-engine-4
• Bitsy - https://ledoux.itch.io/bitsy
• Twine - http://twinery.org/
• PICO-8 (not free) - https://www.lexaloffle.com/pico-8.php
  
• Game Maker Studio 2 (free trial) - https://account.yoyogames.com/download

Check out awesome lists on github

Magic Tools, list of game development tools - https://github.com/ellisonleao/magictools/blob/master/README.md