there is a game on steam about playing as a sperm cell. you apparently can upgrade your "ship" with better weapons and armor etc. each change results in a mutation of your gnome babies, should you succeed, who are then turned in trophies for your van. it's you vs 1000 other cells in a race for first place. whether that be the uterus or throat. if you fail ,you can possibly mine deposits for the sperm bank, which funds upgrades. thoughts?