Sol-Feace

Sol-Feace is a horizontal-scrolling shooter. Controlling the titular starship, the player is tasked with preventing a malfunctioning supercomputer before it enslaves all of mankind. The objective of each stage is to destroy incoming enemies while avoiding their projectiles. The Sol-Feace has a pair of dual cannons that can be modified to either point forwards, backwards or diagonally, and can be arranged parallel to each other. Shooting small capsules will leave behind power-up items that upgrade the Sol-Feace's abilities when collected — these include homing missiles, a piercing laser, and a wide shot.

The game is composed of six stages, including mechanical bases, destroyed star vessels and the planet Jupiter — each of these end with a boss fight that must be defeated in order to progress. Each boss has a weak point that must be shot to inflict damage. The final stage has the player fighting against the supercomputer antagonist. Between stages are animated cutscenes that help explain the game's plot, with the Sega CD release giving these full voice acting.

Sol-Feace was originally released for the X68000 home computer on November 22, 1990. It was developed by Japanese studio Wolf Team and published by their parent company, Telenet Japan. Music for the game was composed by Motoi Sakuraba, who later helped work on the Tales series for Namco. It was ported to the Sega CD in 1991 as one of the console's first launch titles in Japan, alongside Micronet's Heavy Nova, and was made the pack-in game for the North American release — the latter version was published internationally by Sega.

A Genesis cartridge version was released in 1992 and published by Renovation Products, renaming the game to Sol-Deace. The rights to Sol-Feace are owned by Sunsoft, following their acquisition of Telenet Japan's intellectual properties in 2009.

Sol-Feace was met with mixed reviews from critics; while some praised the game's visuals, fast-paced gameplay and soundtrack, others criticized its lack of originality and for being subpar compared to other shoot'em up titles available.

Computer and Video Games magazine criticized the gameplay for lacking originality, unfavorably comparing it to games such as Hellfire and Gynoug, adding that much of the game's mechanics and features were done better on other Sega Genesis games beforehand. Wizard stated it offered nothing new to the shoot 'em up genre, while Retro Gamer said it was a "below par" launch game for the console, saying it was simply the Genesis version with a new CD soundtrack "tacked-on". GamePro wrote for the Sega Genesis release that the power-up items weren't as impressive as those in titles such as Thunder Force III, while also disliking the game's short length. In a retrospective review, AllGame disliked the sound effects for being mediocre and its music for being average.