Not a bad idea but you need to improve the game:
- Control feels very awkward like in some sort of glue
- Not good optimization (can affect the control)
- AI not very smart
- Very difficult waves in the beginning
- Bombs have no limits so I just don't have to shoot at all
- Didn't find "exit" button
- Some bugs like the goose just blown up beside the car (example below)
So I just played 5 minutes and closed the game.