Another Pleasant Time Waster
Here's another casual game from RokaPublish. In this one, geometric shapes encroach on your ship and you need to shoot other geometric shapes at them. Match 3 and they go away.
You gain a few abilities as you advance and for each set you match you build up energy. Once your energy has reached a certain level, you can use one of the abilities.
The abilities range from turning several of the shapes in front of you to the same color, to make the entire board go away and automatically win the level. I tried not to use that last one, but I ran into 3 or 4 levels that I just couldn't solve so I stored up the energy and blew them all away. Many of the levels are easy and can be solved in a minute or two.
Helpful hint: Your stored energy carries over from level to level. If you're stuck on a level and don't have enough energy to use an ability, go back a couple of levels and play through some easy ones. Once your energy is up to the "Warp" level, start the level you're stuck on and warp past it.