Overall, a pretty fun game. Other than the basic player movement, which would've taken a while to make it feel nice, I really only have on complaint with the current game: balancing. For example, I only bought one backpack upgrade and one oxygen upgrade but was able to beat the game relatively easily, and the un-upgraded player speed felt way too fast.

If you wanted to continue this idea, I think the following mechanics would bring this game to the next level.

• Adding a health bar for the blocks would add a new challenge (along with upgrades for the laser damage)
• Enemies that chase you around would add some more tension.

Of course, audio and better graphics would also be great.

The game is nice. It's sad that there is no sound and very basic physics.