RayCrisis

The gameplay of RayCrisis is based on RayForce, which features a viewpoint given to the player with an overhead perspective. The game is a vertically scrolling shooter with a "virus infiltration" theme: the player plays the role of the Waverider computer virus, and the enemies are Con-Human's antibodies, programmed to terminate any virus—including the player—inside the supercomputer's system.

An Encroachment system is added, which causes player to lose points when it reaches 100%, especially facing Dis-Human and Infinity prematurely when reaching a huge Antibody, in addition to a bad ending. Encroachment percentage can be lowered by deleting Antibodies, terminating huge Antibodies or obtaining items, keeping a low profile not to be recognized by Con-Human.

RayCrisis, being a prequel to RayForce, details the events during the timeframe of the supercomputer called the Neuro-Computer Con-Human gaining sentience and rebelling against its human creators, a direct result of a misguided scientist trying to bond a human clone to Con-Human mentally. Now, against Con-Human's massive attack forces laying siege to the Earth, exterminating and cloning humans, a mecha-neurologist jacks in to the Con-Human system in an attempt to regain control of the rogue machine by means of the computer viruses, known as the Waveriders, into the Cybernetics Link, engaging Operation Raycrisis to cease the supercomputer's destructive actions permanently and prevent it from causing more havoc in the future.

However, even when Operation Raycrisis leaves Con-Human wrecked from the inside, it was too late to reverse the damage it has done. Furthermore, what is left of the human race has left for the space colonies as refuge from the destruction. In the end, years later, with the unveiling of the X-LAY starfighter and the ships of the fleet, Terran Command and the remaining humans initiate one final assault on Con-Human, who has turned the Earth into a bleak, metal graveyard. One final assault, in which will end the cybernetic nightmare once and for all, destroying the planet they've called home in the process.

The PlayStation version received "average" reviews according to the review aggregation website Metacritic. Chris Charla of NextGen said that the game "looks fantastic and plays ok[ay], but if you're looking for the next R-Type, look elsewhere." In Japan, Famitsu gave it a score of 26 out of 40.

Also in Japan, Game Machine listed the arcade version in their 1 February 1999 issue as the tenth most-successful arcade game of the year.