@ Tgoy
A very fun & easy 2D free simulator (a true gem) : Algodoo ;) But you must all build! ;)
http://www.algodoo.com
I can answer to some questions about it! :) (only direct first level - not scripts! ;)





Look the videos of this guy following! ;) https://www.youtube.com/channel/UClUIgNQOH-8WRms_awU-47A/videos