Sir Dodick and lecturers gave new suggestions.

• Art of geometricals
• Flatform type of platform. Use tiled. S
• Edge collider is troublematic!
• Animated gif atleast 2. ezgif.com . It's a must actually.
• Mission on each level such as collect numbers of items, go to level complete, etc.
• Background of abstracty
• Zoom out a little bit to have defaultly enough view angle
• Decrease emptiness! People will feel lost on huge empty space. Make sure on real level, less empty space!