There's one game mode: Target Practice.
Click targets to bounce them, if they hit the floor you lose! You have three abilities to help you do this.
Q: Time Pause
Freeze all Targets in place for 5 seconds. Click again to stop early.

W: Bounce All
Bounce all targets at once!

E: Remove Target
Delete a target from existence.

You can also change how the game plays by changing the variables! Head to the Change Variables menu and do whatever you want. Make the targets fall like meteors for the challenge, or reduce the cooldown of your abilities for a relaxed game. The choice is yours.