Bubble Trouble

Bubble Trouble is an awesome retro shooter game in which you control a single character that must shoot down all the bubbles! The bubbles bounce around the level and become smaller as you shoot them – each time you shoot a bubble, it splits into several smaller ones – you must account for the bounce and try to shoot the bubbles without them landing on you!
You only have a certain time limit to complete each level and you must try and destroy all the bubbles as quickly as possible. Watch out for the power-ups that drop when you destroy the bubbles too such as an arrow that increases the bounce height of the bubbles. This game has both single-player and two-player game modes so you can challenge yourself, or play against friends and family!
Release Date
Initially released as a Flash game in May 2007, and from January 2017 is using HTML5 which can be played online and on your mobile as well.
Developer
Bubble Trouble was made by Kresimir Cvitanovic. The game is also known as Bubble Struggle.
Features

You can play with your friend
The bubbles will become smaller until they disappear
Different power-ups to collect when you shoot a bubble
Various balloon colors

Platforms

Web browser (desktop and mobile)
iOS
Controls
Player 1

Left and right arrow = move
Space = shoot

Player 2

X and C = move
W = shoot