Link to the game 
https://lowscope.itch.io/tiny-gems

Summary 
Tiny Gems is a small & simple retro game.
Your goal is to complete levels by collecting enough diamonds for the door to open.
While you collect the gems you have to avoid hazards such as spiders and boulders. 

Features
 The game features 30 levels. And has 7 different skins.
It includes a level editor that is designed to make it easy to create and share campaigns with friends or the world.