Following financial troubles, Psikyo was acquired by X-Nauts in 2002. X-Nauts primarily released Compilation Re-release of Psikyo's shmups, low-budget 2D games and a Sequel of Sengoku Ace series (Sengoku Cannon: Sengoku Ace Episode III) before itself going bankrupt in 2005. Recently, a whole decade after the bankruptcy of both companies, X-Nauts decided to license the Psikyo games to anyone they could find, resulting in a LOT of Psikyo games being released on mobile devices (sometimes with multiple versions from different companies). At the end of 2017, Japanese developer Zerodiv started releasing ports of Psikyo's games to the Nintendo Switch for eShop and in 2018 as physical games by H2 Interactive under the publishing of Arc System Works.
Hardcore Gaming 101 has reviews for various of the games they made, as well the ones by X-Nauts
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Famous games developed and published by Psikyo (and X-Nauts):
- Battle K-Road
- Cannon Spike (developed for Capcom)
- Cho Aniki: Seinaru Protein Densetsu
- Daraku Tenshi: The Fallen Angels (developed by The Steel Hearts)
- Dragon Blaze
- G-Taste Mahjong (based on the famous Hentai series of the same name)
- Gunbird series (published by Capcom)
- Gunbarich (a Breakout game which is a spin-off of this series)
- Lode Runner: The Dig Fight
- Pilot Kids - Shoot 'Em Up with Living Toys
- Sengoku Ace seriesnote
- Sol Divide: Sword of Darkness
- Space Bomber
- Strikers 1945 series
- Taisen Hot Gimmick series (famous erotic Mahjong games)
- Taisen Net Gimmick: Capcom vs. Psikyo All Stars (SFW Mahjong crossover with this company)
- Zero Gunner duology
Psikyo/X-Nauts provides examples of:
- After the End/Apocalypse Anarchy: The main plot of Daraku Tenshi: The Fallen Angels.
- The Bad Guy Wins: Each Gunbird game has an ending where the pirates get the wish instead.
- In the first game, the Marion/Tetsu ending. They start squabbling over who gets to make the wish. The pirates sneak in behind them and steal it.
- In the second one, Marion and Valpiro's ending just has them both tied and gagged with no explanation while the pirate queen makes her wish.
- Be Careful What You Wish For: In the Gunbird series, the characters' wishes at the end often go awry, either due to them not being specific enough, or not considering the unintended consequences.
- Bowdlerise: In Sengoku Ace series, Koyori shows a Navel-Deep Neckline. In the 2014 Sengoku Blaze/Tengai port made for iOS and Android, that was covered with more clothes below the haori (kimono jacket).
- Breaking Out: There's a Gunbird Spin-Off called Gunbarich starred by Marion, the protagonist of Gunbird series, which is a Breakout/Arkanoid game.
- Breakout Characters: Koyori and Tengai, both from Sengoku Ace series. The former became the Mascot and face of this series as well for the company itself, the latter first appears as one of the pilots of the first Strikers 1945 and later became part of Sengoku Ace series as well appeared in other Psikyo games.
- The special case is Ayin, which appeared in a lot of videogames of the company, mostly for Shoot 'Em Up games, appearing in the 3 most important series of the company: Sengoku Ace, Gunbird and Strikers 1945.
- Bullet Hell: The bread and butter of Psikyo's shmups, Cannon Spike included.
- Collision Damage: In some Psikyo STGs, notably the Strikers 1945 series, collision damage would only make your ship power down a level instead of instantly kill you like a bullet would. Players could abuse this to milk the appearance of targets containing powerups for extra points during boss fights or to control the game's rank.
- Compilation Re-release: The Psikyo Shooting Collection released for PlayStation 2 in 2004 by X-Nauts and distribuited by Taito in Japan and by 505 GameStreet in Europe, 3 volumes in where compiled 2 games for each compilation: Strikers 1945 I & II (Vol.1), Sengoku Ace & Sengoku Blade (Vol.2; released separately in Europe under Samurai Aces and Tengai names) and its 2 medieval shmups: Sol Divide & Dragon Blaze (Vol.3). Not to mention Gunbird Special Edition released at the same year, that compiles the 2 games of this series.
- Crossover: Mostly with Capcom, the 2 notable crossovers are Morrigan Aensland as Secret Character in console versions of Gunbird 2 (game distributed by Capcom) and the Mahjong Crossover Taisen Net Gimmick: Capcom vs. Psikyo All Stars for Sega Dreamcast.
- The Alliance: With Capcom, which distributed some of Psikyo games (like Gunbird series) and they developed Cannon Spike for them.
- Cute 'em Up: Gunbird series. Space Bomber, in a way, is this too.
- Department of Redundancy Department: Daraku Tenshi: The Fallen Angels, Japanese and English names of the same game, respectively. Usually the game is known as one of these 2 names instead using the 2 at the same time.
- Fighting Game: Psikyo has very few titles in this genre, but aren't less known for them: Battle K-Road and Daraku Tenshi: The Fallen Angels. Also, some of the character designers of the latter game passed to SNK to create some designs for The King of Fighters '99note and years later created their own company, Circle Edge, and made Yatagarasu.
- Freemium: Mobirix's iOS and Android ports of Strikers 1945 II, Strikers 1945 III and Tengai (Sengoku Blade) add leaderboards, achievements, multiplayer, ads, and... locking all but the first character, maybe giving a second character if an achievement is complete. The rest can be earned grinding through hundreds of playthroughs to earn gems to unlock a character. Or buy $15 worth of gems to unlock all the characters, and further spend gems and gold for power-ups and continues.
- In Name Only:
- One of Medieval shmups is called Dragon Blaze and was released for Arcades, which has the same name as a 2-D sidescrolling role-playing game for iOS and Android systems released decades later.
- From Sengoku Blade there's the Samurai Robot called "Hagane", which has nothing to do with the Ninja Robot who has his own game for SNES.
- Japanese Spirit: Mostly seen in Sengoku Ace series, in which since main characters to final bosses are based on classic Japanese mythologies and stereotypes.
- Licensed Games: Psikyo made some games for other game series (like Lode Runner and Cho Aniki) as well licenses from other media (like G-Taste hentai series, a Mahjong game.)
- Mascot: Marion, the bratty witch from the Gunbird series. Also Koyori from the Sengoku Ace series. Also the P-38 Lightning from the Strikers 1945 series. Also Quaid the Blazing Knight Archer from Dragon Blaze.
- Meaningful Name: The company name, "Psikyo", is a pun of Saikyonote , which it's pronounced like this word. Also, the kanjis of the word "Saikyo" in red are shown above the logo sometimes, as you can see in the image of this page.
- Medieval European Fantasy: Two of Psikyo's shmups are settled in this: Dragon Blaze (Not to Be Confused with another Dragon Blaze) and Sol Divide: Sword of Darkness.
- Ms. Fanservice: Koyori from Sengoku Ace series, definitely. Also, some of the girls of this series.
- Progressively Prettier/Girliness Upgrade: Koyori passed from a Pettanko Tomboy with Boyish Short Hair in the first game to an adult Big-Breast Pride Lady of War with long hair in the next games and appearances. At least the miko outfit and aviator goggles are still there.
- Shoot 'Em Up: Probably the main videogame genre Psikyo became specialist, especially in The '90s. Some of its famous game series are in this genre: Strikers 1945, Gunbird and Sengoku Ace.
- The Smurfette Principle: Inverted in Strikers 1945, in which all pilots are beautiful women... and Ayin.
- Tabletop Game: As STGs, other of Psikyo's trademark games are their Mahjong video games, mostly known for their lewd Taisen Hot Gimmick series.
- Tournament Arc: The main plot of one of his fighting games, Battle K-Road.
- Translation Matchmaking: Gunbird came to the US and Europe as Mobile Light Force. Also, Alfa System's Castle of Shikigami came to the US as Mobile Light Force 2, and to PAL regions as MLF2. The games have no relation to each other, though XS Games' strongly implied they were part of a series of budget-priced Charlie's Angels knockoffs.
- Updated Re-release:
- The 2014-2016 ports for Android and iOS of Psikyo's Shoot 'Em Up like Tengai/Sengoku Blade, Gunbird 2 and Strikers 1945 II, all made by Korean company Mobirix.
- In 2018, Arc System Works brought Psikyo Collection to the Nintendo Switch in 2 volumesnote , which were already released on the eShop of this console.
- Vehicular Combat: The Zero Gunner series (basically "Helicopter Combat.")
