Crisis Force

This is a vertical scrolling shoot-em-up game viewed from overhead, where the player pilots a fighter ship through seven levels of intense shooting action.

Each level hurls enemies and bullets at the player's ship, ending with a boss fight, except for one which instead is a boss rush level.

The game allows for two players to play at the same time.

The player has a choice of two weapons; bullets or lasers.

Weapons can be changed by picking up gems of different colors.

Picking up the same color as you already have allows you to upgrade your current weapon a few times.

The player's ship can change form and with it the way that the weapons work.

This allows the player to pick the best weapon strategy for each situation.

The player also has a limited amount of bombs that are useful to get out of tricky situations.

When a weapon is upgraded it also acts as a shield so the ship can take an enemy bullet without dying.

This will however degrade the weapon down to the first level again.

There are also pickups that alter the ship's speed and a special gem that, if five of them are collected, temporarily transforms the ship into an invincible super ship.

Crisis Force was only released in Japan.

Crisis Force for Nintendo Entertainment System is currently worth €160.88 loose, €315.62 complete in box, and €1010.00 factory sealed. Prices are based on real sales and update regularly on Gamevaro.

Crisis Force has a steady sales history on the tracked marketplaces, meaning it trades hands regularly and isn't considered particularly rare.

Loose means cartridge or disc only, CIB (complete in box) includes the original box and manual, and sealed means factory-sealed and never opened. For Crisis Force, loose is €160.88 and CIB is €315.62 — CIB commands a premium because original boxes and manuals are fragile and often don't survive.