SubSurface made by Grant Clark for the SHMUP Dev Horizontal Shooter Competition which came in 3rd place is a nice shooter where you are under water in a submarine type vehicle. Weapon upgrades are ok with the usual waves on enemy's and pickups. A fast pc and good graphics card is recommended for smooth play. Made with DarkBasic Pro at a 19.2mb download with other games available for download from this website.
Horizontal SHMUP Competition Pagehttp://shmup-dev.com/hcontest (click on the Top 10 link to download this game)