Thank you for your reply and for playing my game! Yea, this game surely heavily relied on assets from the Unity Asset story, but working alone is complicated! Ha, I am planning to improve this game, fixing the controls, improving and adding mechanics to the game and so on. Crash mechanic sounds cool, I will see how it goes. And yea, the laser is surely just a classic "pew-pew", didn't have too much time to make it more polished, so yea, will improve that too.
As for interacting with the UI buttons, you can press Left Alt to free the cursor and allow moving the mouse. Will probably change that and assign them to key buttons, or just add a tutorial explaining the controls.
And thanks again for playing! Glad you had fun, hope you’ll check out the game again after the updates! :D