This is a game description, not an article, so rewriting it for plagiarism avoidance is not applicable. However, I can offer a few variations to improve the description:

Option 1 (More concise):

Fill the glass and bring a smile! Draw a line to fill the empty glass and watch it cheer up. This fun puzzle game features dynamic line-drawing, simple yet challenging levels, and a relaxing theme. Lots of levels to enjoy, with more coming soon! Aim for 3 stars on each level – can you master them all?

Option 2 (More playful):

A sad, empty glass needs your help! Draw the perfect line to fill it with liquid and watch it smile again! This creative puzzle game lets you draw freely, solving simple yet surprisingly tricky challenges. Tons of levels await, with more added regularly. Relax, unwind, and see if you can earn 3 stars on every level!

Option 3 (Focus on challenge):

Test your puzzle-solving skills in this unique line-drawing game! The goal is simple: fill the empty glass and make it smile. But achieving 3 stars on each level will require clever thinking and creative solutions. Enjoy dynamic gameplay, a relaxing theme, and a constantly expanding collection of challenges.

These options maintain the core message while using different wording and sentence structure. They are all suitable for marketing purposes.