Hi Cyber,
Cool game! and easy to play, I think this is for kids. I am an evergreen kid.
I completed all WallMan levels. Particles are okay for me, looks good.
Is a fine work by you.
Bonuses would be good for this game.
I have the feeling that this game is a little too fast, maybe I become old.
Thanks for this idea, I will make an Oxygen version therefrom.
And I will use all your Levels, but a tad modified. I will add bombs and keys.