Cool little game!
Here's some feedback if you want:
- The difference between the two scores displayed on screen isn't clear.
- I don't know what the two circles at the top right of the screen mean.
- Is there a reason for the top half of the screen, game design wise? The slugs seem only to be spawning on the bottom half.
- I don't know what the code looks like but the transition between a manageable amount of slugs spawning and way too much is too sudden. It would be a better idea I think to implement a varying spawn rate to make the difficulty vary higher and lower over time and give the player the opportunity to calm down between waves.
Nice little game to train your hand-eye coordination as of now. The format seems to be best adapted to a mobile's one, would be interesting to make an android build.
Keep it up!