Popular games published by company The Sales Curve

The Ninja Warriors presents side-scrolling hand-to-hand combat. Players take control of Kunoichi or Ninja and fight wave after wave of Banglar forces across five levels.

The five missions in the game are each three or four stages long. Several hostages are being held in each stage; Joe must rescue all of them before he is allowed to finish the stage. The last stage in each mission has no hostages, but instead features a powerful boss character whom Joe must defeat. After completing each of the first four missions the player is taken to a bonus stage, where he can earn an extra life if he is able to kill all of the ninjas leaping towards him. Completing the fifth mission ends the game. Also, once the fifth mission begins, continues are no longer allowed; the player has to finish the game with however many lives he has left at that point. If the player earns a place on the high score board, the number of credits it took him to get that score is displayed along with his score. Joe's standard weapons are an unlimited supply of shuriken, along with punches and kicks when attacking at close range. One hostage per stage gives him a power-up. When powered-up, his throwing stars are replaced by a gun that fires large, explosive bullets, and his close-range attack becomes a katana slash. Joe can also perform "ninja magic," which may be used only once per stage and kills (or damages, in the case of bosses) all enemies on the screen. The game also allows the enemies to hide behind boxes or use shields to block Musashi's shurikens.[4] Joe can be killed with one hit, provided he is hit by a projectile or melee attack, but if he does not find himself in those situations, the player can touch regular enemies and just be pushed back without being damaged. Since most enemies appear in the same place on each level, it is possible to master the game by memorizing their locations and devising patterns to defeat them. At the end of each stage, the player receives score bonuses based on performance. Completing the stage without using ninja magic or without using any throwing stars or bullets earns the player a point bonus. The player has three minutes to complete each stage; remaining time at the end of the stage is also converted to bonus points and added to the player's score.

In 1989, Grandslam Entertainment released a game for the Commodore 64 and Amiga, Amstrad CPC, Atari ST, MSX, and ZX Spectrum.

Gender Wars is a real-time tactics action game for DOS developed by The 8th Day and published by GT Interactive Software and Sales Curve in 1996. After eons of fighting between the genders, men and women have broken into separate factions, each using genetic engineering to create new followers, and waging terrible war upon each other. Upon selecting the side you wish to play (depicted as either clueless blondes who can't drive, or beer-swigging lazy oafs), you select a team of 4 for your missions, arm them up with guns and other assorted weaponry, and wreak havoc on the 'enemy' in this isometric Syndicate-like game. Progress through the levels to the final conflict, collecting tanks and other assorted 'powerups' along the way, and watching the humourous cutscenes as you go.