The levels are wonderfully challenging (though I discovered that playing with a touchscreen does enable you to "cheat" a bit). Great music choice to match the game, too.
Overall, it's a fun endless runner. There's a good division between the colors used in the foreground and background. However, it's kind of awkward to use both the keyboard and mouse. It would be nice if instead of having to do left-click you could just press "C". The music is good, except it sounds a bit odd when it loops during gameplay.
Is this 64 x 64? Because it seems that there is a tiny bit of the blue "slime" visible to the right of the snails' tails that is too small to be a full 1 pixel of the 64 across (pointed to in red)? Otherwise, it seems the sprites have been kept at the correct resolution.
I had to dock a few stars on the rating because it doesn't fit the 64x64 requirement and it isn't immediately obvious how to play as SVR_Audio said. That being said, it was still an interesting game - usually games don't have you try to be hit by your enemies bullets. The obstacles and gradual addition of more enemies also require players to carefully plan their movements.
