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D4 Enterprise

D4 Enterprise continues to release retro Japanese PC game ports through its EGG Console line on Nintendo Switch and Steam, with five new titles added between June and July 2026.

Synthesized from 5 Yomimono stories · updated Jul 28

D4 Enterprise has been steadily expanding its EGG Console preservation line, releasing five titles on Nintendo Switch between June and July 2026, with one also coming to Steam. The releases span multiple Japanese PC platforms from the 1980s and 1990s, including PC-8801, PC-9801, and MSX2 systems. The 102nd title, Marchen Veil II PC-9801, launched on June 4, 2026, as an action RPG originally from System Sacom in 1986. It features expanded action elements over its predecessor, with enhanced speed, enemy attacks, and map size.

On June 19, 2026, D4 Enterprise released Relics MSX2 on Steam as an EGG Console title, following its earlier Switch release on July 2, 2026, as the 106th title. The 1986 MSX2 action adventure from Booster Technology features a unique Spirit Ride possession system. Both the Switch and Steam versions include a Scene Select mode and a Gallery mode. The Steam version was priced at 1,200 yen.

On June 25, 2026, the 105th EGG Console title, First Queen IV PC-9801, launched on Switch. The real-time simulation from Kure Software Koubou in 1994 features the series' Gocha Character System, new dual-unit controls, fatigue mechanics, and mercenary hiring. The 109th title, Dragon Slayer LEVEL 2.0 PC-8801, released on July 28, 2026, as a rebalanced version of Nihon Falcom's 1984 action RPG, adding new mechanics and a Gallery mode with original materials. All Switch titles were priced at 880 yen.

Key facts

EGG Console title count
109 titles released on Switch as of July 28, 2026
Latest Switch release
Dragon Slayer LEVEL 2.0 PC-8801, released July 28, 2026, for 880 yen
Steam release
Relics MSX2 released on Steam on June 19, 2026, for 1,200 yen
Original developer of Relics
Booster Technology (1986 MSX2 title)
Original developer of First Queen IV
Kure Software Koubou (1994 PC-9801 title)
Original developer of Dragon Slayer LEVEL 2.0
Nihon Falcom (1984 PC-8801 title)
Original developer of Marchen Veil II
System Sacom (1986 PC-9801 title)

Timeline

Synthesized by Yomimono from the cited Yomimono stories below, each itself sourced, then editorially reviewed. Every fact links the story it came from.

Connections

Structured graph also available as JSON at /public/entities/d4-enterprise. CC BY 4.0.

Claim activity

When a claim about D4 Enterprise was confirmed, debunked, or disputed against open-web sources. The record stays even after a claim drops off the facts list.

  • Confirmed D4 Enterprise produces Relics Jun 21 · source

All coverage

Jul 28

EGG Console Dragon Slayer LEVEL 2.0 PC-8801 Launches on Switch

D4 Enterprise released the 109th EGG Console title for Switch, Dragon Slayer LEVEL 2.0 PC-8801, on the Nintendo eShop for 880 yen. The action RPG, originally by Nihon Falcom in 1984, features adjusted balance, new mechanics, and a Gallery mode with original materials.

Jul 6

1986 MSX2 Action Adventure Relics Comes to Switch as EGG Console Title

D4 Enterprise released Relics for the Nintendo Switch on July 2, 2026, as the 106th EGG Console title. Originally an MSX2 action adventure from Booster Technology in 1986, the game features a Spirit Ride possession system. The Switch version adds a Scene Select mode and a Gallery mode.

Jun 25

EGG Console Adds First Queen IV, a 1994 PC-9801 RTS, as 105th Title

D4 Enterprise released "EGG Console First Queen IV PC-9801" on Nintendo eShop as the 105th title in the retro game service. The real-time simulation, originally from Kure Software Koubou in 1994, features the series' Gocha Character System and new dual-unit controls, fatigue mechanics, and mercenary hiring. The scenario is the largest in the series.

Jun 4

Egg Console Marchen Veil II PC-9801 Launches on Switch

D4 Enterprise released Marchen Veil II PC-9801 on the Nintendo eShop as the 102nd EGG Console title. The action RPG, originally from System Sacom in 1986, follows a cursed Lake Prince. It alternates between visual story scenes and four-directional scrolling action, with enhanced speed, enemy attacks, and map size over the original.

Jun 2

Bothtec's Relics MSX2 Joins EGG Console on Steam June 19

D4 Enterprise announced on June 2, 2026, that Bothtec's 1986 action-adventure game "Relics MSX2" will be released on Steam as part of the EGG Console line on June 19, 2026, for 1,200 yen. The game is set in a mysterious ruin that rose from the sea, where the player controls a protagonist who exists as a spiritual entity with no clear objective. The core mechanic is the "Spirit Ride" possession system, which lets the protagonist take over the bodies of defeated enemies. The possessed body determines attack methods, stamina, and how other characters react, making body choice a strategic element. The original game was noted for its sci-fi character designs, detailed humanoid animations, and effective use of sound effects such as wave sounds, which created a cinematic experience for its time. The EGG Console version includes a Scene Select mode for jumping to specific scenes, final battles, and endings, plus a Gallery mode for viewing the original manual and package art. The Steam store page is already live.