Why is it so hard to make game design decisions? (Developing 3)

Full Developing Playlist - https://www.youtube.com/playlist?list=PLc38fcMFcV_uH3OK4sTa4bf-UXGk2NW2n

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This time on Developing, I try to turn my prototype into an actual game - but get hung up on indecision. How will I solve this problem?

How to make Predicted Trajectory path of Projectiles in UNITY - Bow and Arrow 2D | The Game Guy
https://www.youtube.com/watch?v=3DUmpVi82q8

ROWBYROW Game - https://verysoftwares.itch.io/rowbyrow

=== Credits ===

Music By: LAKEY INSPIRED @ https://soundcloud.com/lakeyinspired
License for commercial use: Creative Commons Attribution 3.0 Unported "Share Alike" (CC BY-SA 3.0) License.
YouTube Audio Library

=== Subtitles ===

Contribute translated subtitles - https://amara.org/en-gb/videos/dwENBd7Zld0d