This is a port of battleship, with the caveat that your ships aren't constrained to be a particular size, but the computers are, sort of.

There are no sounds, and the graphics are all static, not to mention primitive.

Game play is not terribly obvious, as the setup and play are on the same screen, and setup does not indicate when a game is ready to play.

The updates for when you and the computer have made a move are pretty small, and leave you guessing a lot.

The status of the game (how close each side is to winning) is plain text, and would be improved greatly by being graphical.

There should be a thermometer which has a set of ships, as each one is sunk, it is greyed out. The current system requires you to hit an "Add" button (with no graphical effect) and then click on the square you wish to place your boat (no cursor change)

The same widget could be used to show / allow placement of ships. This would keep the playing field level by forcing the player to have ships of particular sizes, and only horiz and vert ship placements. I was able to win my second game without taking a single hit. Fun once, but it would loose it's challenge fast.

There is no high score feature (or it is disabled in the demo, and they don't mention it in their screens).

Overall I would say this game is eminently missible, even for free, at $5 I would buy movie popcorn instead.

I hope the developer continues work, the game could be fun with some work on UI, AI, and game play.