I used the Sketch "Delicious" free UI Kit for a food recipes app. It includes 11 pixel-perfect screens. I just added Proto.io interactions and created a great prototype! This Delicious UI Kit was designed by Robert Anitei Sketch source: https://www.sketchappsources.com/free-source/1765-delicious-ui-kit-sketch-freebie-resource.html

A project which simulates a collision between 2 objects. Freely drag the objects onto each other in order to have their core color change when colliding.

A website template with multilevel dropdown menus and scrolling area.

Movies & Series App project Design Credits: https://www.sketchappsources.com/free-source/2896-sample-iphone-x-movies-app-sketch-freebie-resource.html

Embed Street view map

A simple endless runner. You can jump by tapping the screen, hitting the space bar on your keyboard or hitting the up arrow key.

Travel app (Part 1) Work in progress of Travel project Credits: https://www.sketchappsources.com/free-source/2947-travel-app-ui-kit-sketch-freebie-resource.html

A project which uses Vector Animations to recreate popular social app interactions.