I've been working on this mockup for a few days now, and I'd like help push it further. The general concept is a side-scrolling shooter set in the post-apocalyptic Wild West and you are fighting off waves of cosmic horrors. I'm entertaining the idea that the score counter works like an antique cash register, swapping out flags as the value changes.

I'm envisioning this on a mobile device, so the screen would be scaled up(I might need to rework the aspect ratio). I'm assuming that the player would tap to shoot, so I've kept the HUD elements to the left side. Swiping up/down on the left side causes the truck to switch lanes.

Things I'm still considering/working on:

• Enemies
• Obstacles
• Power-ups
• A foreground parallax layer
• Additional GUI elements

C+C very welcome.