Very fun game, with that simple but addictive motherload style gameplay loop. The lack of upgrades I originally saw as a negative, but it drove me to explore to the end of the planet (and find a fun little ending sequence). Enemy variety made combat rather interesting. Mobility upgrades were endlessly helpful and I felt like a sack of potatoes without them (without the jump boost shoveling became a troublesome proposition). Sound design was great, especially the propellers of the ship. Graphics were also very good.